IBM DS4700 manual

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Note: Before using this information and the product it supports, be sure to read the general information in the “Safety” on page xv and “Notices” on page 215 sections. Sixth Edition (November 201 1) © Copyright IBM Corporation 2010. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Cont[...]

Contents Figures ............................ i x T ables ............................ xiii Safety ............................ x v About this document ...................... x x i Who should read this document .................. x x i How this document is organized .................. x x i DS4000 Storage Subsystem installation tasks - General over[...]

Electrical requirements ..................... 2 6 Power and site wiring requirements for models with ac power supply and fan units ........................ 2 7 Power and site wiring requirements for models with dc power supply and fan units ........................ 2 8 Heat output, airflow , and cooling ................. 2 8 Chapter 2. Installing t[...]

DS4700 Express Storage Subsystem drive cabling rules and recommendations ..................... 7 8 One DS4700 Express and one EXP100 storage expansion enclosure . . . 80 One DS4700 Express and two EXP100 storage expansion enclosures 81 One DS4700 Express and three or more EXP100 storage expansion enclosures ........................ 8 2 One DS4700 E[...]

Restoring power after an unexpected shutdown ........... 1 3 7 Recovering from an overheated power supply and fan unit ........ 1 3 8 Cache memory and cache battery ................. 1 4 0 Cache memory ....................... 1 4 1 Subsystem cache battery ................... 1 4 2 Chapter 5. Replacing components ................ 1 4 5 Handling stat[...]

Important notes ........................ 2 1 6 Particulate contamination ..................... 2 1 7 Documentation format ...................... 2 1 7 Electronic emission notices .................... 2 1 8 Federal Communications Commission (FCC) statement ........ 2 1 8 Industry Canada Class A emission compliance statement ........ 2 1 8 Avis de co[...]

viii IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Figures 1. DS4700 Express hot-swap drive bays ....................... 7 2. Back view; connectors, switch, ports, enclosure ID on model 70 ............. 1 0 3. Back view; connectors, switch, ports, enclosure ID on model 72 ............. 1 0 4. Power supply and fan unit components for DS4700 Express model 70 ........... 1 3 5. Power supply and fan un[...]

54. One DS4700 Express and three storage expansion enclosure — Recommended cabling .... 7 4 55. One DS4700 Express and four storage expansion enclosure — Recommended cabling ..... 7 4 56. One DS4700 Express and up to six storage expansion enclosure — Recommended cabling 75 57. One DS4700 Express and up to six storage expansion enclosure — N[...]

93. DC power supply and fan unit cabling scheme - dual-level redundancy .......... 1 1 4 94. DC power supply connector - PIN positions .................... 1 1 4 95. DC wiring from DS4700 Express to disconnect device and dc power source ........ 1 1 5 96. Power supply and fan unit LEDs ......................... 1 2 6 97. DC power supply and fan uni[...]

xii IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

T ables 1. Where to find DS4000 installation and configuration procedures ............. xxii 2. Description of Figure 2 on page 10 ........................ 1 0 3. Description of Figure 3 on page 10 ........................ 1 0 4. Description of Figure 4 on page 13 ........................ 1 3 5. Description of Figure 5 on page 13 ..................[...]

49. Drive LED activity .............................. 1 5 2 50. Data transfer rates for drive modules ....................... 1 6 2 51. Symptom-to-FRU index ............................ 1 8 4 52. Parts listing (DS4700 Express Storage Subsystem) .................. 1 8 9 53. Storage subsystem and controller information record ................. 1 9 2 [...]

Safety The caution and danger statements that this document contains can be referenced in the multilingual IBM ® Safety Information document that is provided with your IBM System Storage ® DS4700 Express Storage Subsystem. Each caution and danger statement is numbered for easy reference to the corresponding statements in the translated document. [...]

DANGER Electrical current from power , telephone, and communication cables is hazardous. T o avoid a shock hazard: v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. v Connect all power cords to a properly wired and grounded electrical outlet. v Connect to p[...]

CAUTION: When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are installed, note the following: v Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. v Use of controls or adjustments or performa[...]

Statement 5: CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. T o remove all electrical current from the device, ensure that all power cords are disconnected from the power source. 1 2 Statement[...]

CAUTION: This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following [...]

Cable W arning: W ARNING: Handling the cord on this product or cords associated with accessories sold with this product, will expose you to lead, a chemical known to the State of California to cause cancer , and birth defects or other reproductive harm. Wash hands after handling. xx IBM System Storage DS4700 Express Storage Subsystem: Installation,[...]

About this document This document provides instructions for installing and customizing the configuration of your IBM System Storage DS4700 Express Storage Subsystem. It also provides maintenance procedures and troubleshooting information. Who should read this document This document is intended for system operators and service technicians who have e[...]

Appendix E, “Accessibility,” on page 213 details accessibility information. DS4000 Storage Subsystem installation tasks - General overview T able 1 provides a sequential list of many installation and configuration tasks that are common to most DS4000 configurations. When you install and configure your DS4000 storage subsystem, refer to this tab[...]

T able 1. Where to find DS4000 installation and configuration procedures (continued) Installation task Where to find information or procedures 3 Mount the DS4000 EXP storage expansion unit in the rack v DS4000 EXP100 Storage Expansion Unit Installation, User ’s and Maintenance Guide v DS4000 EXP420 Storage Expansion Enclosures Installation, User [...]

T able 1. Where to find DS4000 installation and configuration procedures (continued) Installation task Where to find information or procedures 6 Power up the subsystem v DS4100 Storage Subsystem Installation, User ’s, and Maintenance Guide v DS4200 Express Storage Subsystem Installation, User ’s, and Maintenance Guide v DS4300 Storage Subsystem[...]

T able 1. Where to find DS4000 installation and configuration procedures (continued) Installation task Where to find information or procedures 9 Install DS4000 Storage Manager software on the management station v DS4000 Storage Manager Installation and Host Support Guide for AIX, HP-UX, Solaris, and Linux on POWER v DS4000 Storage Manager Installat[...]

T able 1. Where to find DS4000 installation and configuration procedures (continued) Installation task Where to find information or procedures 16 Configure arrays and logical drives v DS4000 Storage Manager Installation and Host Support Guide for AIX, HP-UX, Solaris, and Linux on POWER v DS4000 Storage Manager Installation and Host Support Guide fo[...]

Finding DS4000 readme files 1. Go to the following Web site: www .ibm.com/systems/support/storage/disk 2. Click the link for your Storage Subsystem (for example, DS4800 ). 3. When the subsystem support page opens, click the Download tab. 4. Under the Download tab, click Storage Manager , firmware, HBA, tools, support & pubs (including readmes) [...]

http://www .ibm.com/systems/support/storage/disk Select your Storage Subsystem (for example, DS4800 ). Premium feature activation Activate a DS4000 ® premium feature by using the online tool: www-912.ibm.com/PremiumFeatures/jsp/keyInput.jsp IBM publications center Find IBM publications: www .ibm.com/shop/publications/order/ Support for System p ®[...]

In the U.S. and Canada, hardware service and support is available 24 hours a day , 7 days a week. In the U.K., these services are available Monday through Friday , from 9 a.m. to 6 p.m. Fire suppression systems A fire suppression system is the responsibility of the customer . The customer's own insurance underwriter , local fire marshal, or a [...]

xxx IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Chapter 1. Introduction This chapter describes the operating specifications, features, and components for the IBM System Storage DS4700 Express Storage Subsystem (hereafter referred to as DS4700 or storage subsystem ). This chapter also includes an inventory checklist and important information on best practices guidelines and product updates for yo[...]

environments. DS4700 Express Storage Subsystems that shipped before the introduction of the DS4700 Express models with dc power supply and fan units support standard IT and of fice operating environments only . Y ou can identify whether a DS4700 Express Storage Subsystem is NEBS/T elco compliant by checking the serial number . Any DS4700 Express St[...]

Operating system support For supported operating systems, see the latest DS4000 Storage Manager host software readme file and the IBM DS4000 series products interoperability matrix at the following Web site for additional host operating system support: www-1.ibm.com/servers/storage/disk/ds4000/interop-matrix.html See “Finding DS4000 readme files?[...]

– Diagnostic wrap plug/coupler (1) – Serial cable adapter (1) – Rack-mounting hardware kit (1), including: - Rails (2) (right and left assembly) - M5 black hex-head slotted screws (12) - W ashers (8) – 4 Gbps SFPs (6) (Model 72A, 72H, 72S, and 72T only . The SFPs are installed in the DS4700 Express SFP ports.) – 4 Gbps SFPs (4) (Model 70A[...]

Note: If you ordered additional premium features or entitlements, the premium features activation or entitlement kits may also be shipped inside the box. If an item is missing or damaged, contact your IBM reseller or your IBM marketing representative. A rack mounting template and instructions for installing the support rails and the storage subsyst[...]

having all the right or all the left power cables plug into the same power circuit enables the DS4000 devices in the configuration to power on simultaneously during an unattended restoration of power . Note: Do not overload the circuits that power your storage subsystem and storage expansion enclosures. Use additional pairs of ac power distribution[...]

v Filter and filter retainer The hot-swap features enable you to remove and replace 2 or 4 Gbps fibre channel or SA T A hard E-DDMs, power supply and fan units, and controllers without turning off the storage subsystem. Y ou can maintain the availability of your system while a hot-swap device is removed, installed, or replaced. Enhanced Disk Drive [...]

subsystems such as DS4100 or DS4300 storage subsystems. The DS4700 Express E-DDM option CRUs are not interchangeable with those of the DS4200 Express and EXP420. When replacing an E-DDM CRU, be sure to order and install the correct E-DDM CRU. Using non-supported E-DDM options or FRUs will result in the E-DDM being locked out by the DS4700 Express c[...]

comprise the enclosure ID are referred to as x10 and x1 digits. The enclosure ID provides a unique identifier for each enclosure in the storage subsystem. The storage management software automatically sets the enclosure ID number . Y ou can only change the enclosure ID setting through the DS4000 storage management software. There are no switches on[...]

T able 2. Description of Figure 2 Number Description 1 Controller A 2 Controller B 3 Host channels 4 Ethernet ports 5 Serial port 6 Dual-ported drive channel 7 Enclosure ID T able 3. Description of Figure 3 Number Description 1 Controller A 2 Controller B 3 Host channels 4 Ethernet ports 5 Serial port 6 Dual-ported drive channel 7 Enclosure ID ds47[...]

Setting up IP addresses for DS4000 storage controllers After you install DS4000 Storage Manager (as described in the DS4000 Storage Manager Installation and Support Guide for your host operating system), complete one of the following procedures to set up IP addresses: v “Steps for setting up the DHCP/BOOTP server and network” v “Steps for ass[...]

2. Start the DS4000 Storage Manager client software. The Enterprise Management window opens. 3. Add the DS4000 subsystem to the DS4000 Enterprise Management domain using the default IP addresses. 4. In the Enterprise Management window , click on the name of the default storage subsystem. The Subsystem Management window opens. 5. In the Subsystem Ma[...]

T able 4. Description of Figure 4 Number Description 1 Power supply and fan unit A 2 Power supply and fan unit B 3 Power connector 4 Power switch T able 5. Description of Figure 5 Number Description 1 Power supply and fan unit A 2 Power supply and fan unit B 3 Power connector 4 Power switch Figure 6 on page 14 shows a power supply and fan unit and [...]

DC power supply and fan units The DS4700 Express Storage Subsystem (models 70S, 70T , 72S, and 72T) has two removable dc power supply and fan units. Each dc power supply and fan unit contains one dc power supply and two fans. The four fans pull air through the drive from front to back across the drives. The fans provide redundant cooling, which mea[...]

Figure 8 shows the dc power supply and fan unit components for the DS4700 Express model 70 and Figure 9 on page 16 shows the dc power supply and fan unit components for the DS4700 Express model 72. T able 6. DC power supply and fan unit description for DS4700 Express model 70 Number Description 1 DC power supply and fan unit A 2 DC power connector [...]

T able 6. DC power supply and fan unit description for DS4700 Express model 70 (continued) Number Description 3 DC power connector A2 1 4 DC power switch 5 DC power supply and fan unit B 6 DC power connector B1 2 7 DC power connector B2 2 8 Pin 1: -48 V dc 9 Pin 2: POS RTN 10 Pin 3: GND Notes: 1. The A1 and A2 dc connectors are keyed so that the dc[...]

T able 7. DC power supply and fan unit description for DS4700 Express model 72 (continued) Number Description 3 DC power connector A2 1 4 DC power switch 5 DC power supply and fan unit B 6 DC power connector B1 2 7 DC power connector B2 2 8 Pin 1: -48 V dc 9 Pin 2: POS RTN 10 Pin 3: GND Notes: 1. The A1 and A2 dc connectors are keyed so that the dc[...]

T able 8. Description of Figure 10 Number Description 1 Controller A cache backup battery unit 2 Controller B cache backup battery unit 3 Latch 4 Pull handle The battery unit provides backup power to each controller's cache memory . Each battery unit contains a sealed, rechargeable lithium ion battery . The battery unit can maintain data in th[...]

SFP modules The storage subsystem supports a fiber optic interface for host and storage expansion enclosure connections. Y ou must install a Small Form-factor Pluggable (SFP) module in each interface connector on the controller where a fibre optic cable is to be installed. Do not install an SFP in any port that will not have a fibre optic cable att[...]

Figure 12 shows a front view of the bezel. Figure 13 shows a side view of the bezel, filter , and filter retainer . T able 9. Filter and filter retainer description Number Description 1 Bezel 2 Filter 3 Filter retainer Software and hardware compatibility and upgrades The latest DS4000 controller firmware and NVSRAM, the storage expansion enclosure [...]

Unless stated otherwise, you can find the latest DS4000 publications, firmware, and host software at the IBM DS4000 System Storage Support Web site: www .ibm.com/systems/support/storage/disk Software and firmware support code upgrades T o enable support for the DS4700 Express, you must ensure that your system's software and firmware are the co[...]

T o obtain the controller firmware version: Right-click the Controller icon in the Physical View pane of the Subsystem Management window and select Properties . The Controller Enclosure properties window opens and displays the properties for that controller . Y ou must perform this step for each individual controller . T o obtain the drive firmware[...]

Weight The total weight of the storage subsystem depends on the number of components installed. T able 10 lists the maximum, empty , and shipping weights for the storage subsystem in different configurations. T able 1 1 lists the weight of each component. T able 10. DS4700 Express weights Unit Weight Maximum 1 Empty 2 Shipping DS4700 Express 40 kg [...]

Environmental requirements and specifications This section describes the environmental requirements and specifications for the DS4700 Express Storage Subsystem, including temperature and humidity , altitude, airflow and heat dissipation, shock and vibration requirements, and acoustic noise levels. T emperature and humidity T able 13 lists the accep[...]

T able 15. T emperature and humidity requirements for storage subsystem in a T elco/NEBS-3 compliant environment (continued) Condition Parameter Requirement Relative humidity 1 (no condensation) Operating range 5% to 85% Short-term 2 5% to 90% (not to exceed 0.024 kg water/kg of dry air) Notes: 1. In a T elco/NEBS-3 compliant environment, condition[...]

These tabulated power and heat dissipation values are typical for the storage subsystem. Maximum configuration units are typically operated at higher data rates, have larger random access memory (RAM) capacities, or have different host interface boards. T able 17. DS4700 Express power and heat dissipation Parameter KV A W atts (ac) Btu per hour DS4[...]

v Circuit overloading – Power circuits and associated circuit breakers must provide sufficient power and overload protection. T o prevent possible damage to the unit, isolate its power source from large switching loads (such as air conditioning motors, elevator motors, and factory loads). v Power failures – If a total power failure occurs, the [...]

are appropriate for use in a typical outlet in the destination country . See Appendix C, “Power cords,” on page 199 for more information. Power and site wiring requirements for models with dc power supply and fan units The storage subsystem uses wide-ranging redundant power supplies that automatically accommodate voltages to the dc power source[...]

1220 mm cold aisle width 2440 mm between center lines of hot and cold aisle Perforated tiles or gratings back back T42 racks T42 racks T42 racks Cold aisle Hot aisle Air conditioner back front front front Airflow Figure 16. Example of cold aisle/hot aisle rack configuration Chapter 1. Introduction 29[...]

30 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Chapter 2. Installing the storage subsystem This chapter provides the information that you need to install the storage subsystem into a rack cabinet. Before you begin the installation, review the safety information in “Safety” on page xv. “Installation overview” provides an overview of the entire storage subsystem installation process. Read[...]

5. Before removing the DS4700 Express from the shipping box, remove the components from the DS4700 Express chassis to lighten the unit. See “Removing the CRUs” on page 40. 6. Record the serial number , machine type and model number , and RAID controller MAC addresses for your DS4700 Express Storage Subsystem in Appendix A, “Records,” on pag[...]

Note: Perform this step if the attached storage expansion enclosures are EXP710s or EXP100s only . The EXP810 storage expansion enclosure IDs are automatically set by the controllers to be unique when they are cabled together . 12. Perform one of the following cabling tasks to enable management of the DS4700 Express configuration: v If you are usin[...]

Preparing for installation Before installing the DS4700 Express Storage Subsystem, create a detailed plan of how this unit will be used in your storage configuration. The plan should include determining RAID levels, fallover requirements, operating systems to be used, and total storage capacity requirements. Complete the following steps to prepare [...]

The kit includes a DS4000 Storage Manager Support CD that has the appropriate IBM DS4000 Storage Manager host software. If you order more than one host software kit, the additional kits may also be shipped in the DS4700 Express shipping box. The CD also includes the DS4000 Storage Subsystem controller firmware. For the latest controller firmware, c[...]

Preparing the rack cabinet Important: Before you install the storage subsystem in a rack cabinet, keep in mind the following considerations: v Review the documentation that comes with your rack enclosure for safety and cabling considerations. v Install the storage subsystem in a recommended 22° C (72° F) environment. See “Environmental requirem[...]

3U 3U 2U 2U 1U 1U 0U 0U Rail assembly (Front Left) Bezel (Front Left) Bezel (Front Right) Rail assembly (Front Right) FRONT Rack Mounting T emplate DS4700 Install first ---> Install second ---> Install second ---> Install first ---> <--- Install first <--- Install first ds470001 Figure 18. Front rack mounting template Chapter 2. I[...]

Before installing the DS4700 Express in a rack cabinet, you must install the rails and rack-mounting hardware that come with your storage subsystem. The DS4700 Express requires an Electronic Industries Association (EIA) 310-D T ype A 19-inch rack cabinet. The distance between EIA rails, from the front to the rear of the rack, is 60.96 cm (24 in.) m[...]

4. The rack-mounted unit is three EIA units high. Decide accordingly where you are going to install the support rails. Attention: Use the rack mounting template provided in Figure 18 on page 37 and Figure 19 on page 38 to locate the proper rack mounting holes for installing the support rails into the rack. Note the following considerations before y[...]

12. Continue with “Removing the CRUs.” Installing the DS4700 Express This section provides instructions on installing the DS4700 Express. The installation process includes: v “Removing the CRUs” v “Installing the DS4700 Express into a rack on the support rails” on page 46 v “Replacing the components” on page 48 Removing the CRUs Thi[...]

The DS4700 Express comes with a rack-mounting hardware kit for installing it in a rack. It is easier to lift the DS4700 Express and install it in a rack cabinet if you remove all the CRUs first. Y ou will need an antistatic wrist strap and a cart or level surface (to hold the CRUs). Observe the precautions listed in “Handling static-sensitive dev[...]

3. Place the controller on a level surface. 4. Repeat step 1 through step 3 for the second controller . Removing an ac power supply and fan unit Statement 5: CAUTION: The power control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one[...]

3. Place the power supply and fan unit on a level surface. 4. Repeat step 1 through step 3 for the second power supply and fan unit. Removing a dc power supply and fan unit CAUTION: This unit has more than one power source. T o remove all power from the unit, all dc MAINS must be disconnected. Statement 29: Le ver Ds470011 Figure 22. Removing a pow[...]

CAUTION: This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following [...]

Note: The lever rotates upward or downward 90°, depending on whether the dc power supply and fan unit you are removing is in the left or right dc power supply and fan unit bay . 3. Place the dc power supply and fan unit on a level surface. 4. Repeat step 1 on page 44 through step 3 for the second dc power supply . Removing an E-DDM Complete the fo[...]

5. Place the E-DDM CRU horizontally on a level surface. Attention: Do not stack E-DDM CRUs on top of one another . Protect the E-DDM CRUs from vibrations or sudden shocks. 6. Repeat step 1 through step 4 on page 45 for additional E-DDM CRUs. Installing the DS4700 Express into a rack on the support rails Complete the following steps to install the D[...]

2. Using a #2 Phillips screwdriver , remove the four screws from the rails (two screws in each rail). See 4 in Figure 20 on page 40. If you do not remove these screws, the storage subsystem will not fit securely . Note: If the screws are shipped in the hardware pack instead of already installed in the rails, skip this step and go to step 3. 3[...]

5. Continue with one of the following actions: v If you did remove the DS4700 Express CRUs before installation (as described in “Removing the CRUs” on page 40), continue with “Replacing the components.” v If you did not remove the DS4700 Express CRUs before installation, continue with Chapter 3, “Cabling the storage subsystem,” on page [...]

2. As you slide the controller into the empty slot, make sure the guide pins on the side of the controller fit into the notches. After the guide pins fit into the notches and the controller fits snugly into the bay , push the lever downward or upward 90°, depending on whether the controller is inserted in the A or B controller bay to fully latch i[...]

CAUTION: Disconnect the power cord before replacing the power supply and fan unit. Complete the following steps to replace the power supply and fan units that you removed before the installation: 1. Slide one power supply and fan unit into the storage subsystem. Be sure to replace the power supply and fan units so that the lever on each power suppl[...]

CAUTION: This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. This equipment is designed to permit the connection of the earthed conductor of the dc supply circuit to the earthing conductor at the equipment. If this connection is made, all of the following [...]

Complete the following steps to replace the dc power supply and fan units that you removed before the installation: 1. Slide one dc power supply and fan unit into the storage subsystem. Be sure to replace the dc power supply and fan unit so that the lever on each dc power supply and fan unit opens toward the interior of the storage subsystem, as sh[...]

Note: Use T able 55 on page 194 to verify the proper replacement locations of your E-DDMs. 1. Lift up on the handle and gently push the E-DDM CRU into the empty bay until the hinge of the tray handle latches beneath the storage subsystem bezel, as shown in Figure 30. 2. Push the tray handle down until the latch clicks into place. 3. Repeat step 1 a[...]

ds470067 Figure 31. Installing a T elco bezel 54 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Chapter 3. Cabling the storage subsystem After the storage subsystem is installed in its permanent location, you must cable it to hosts, drives, and other external devices, depending on your hardware configuration. This chapter addresses the following cabling and configuration topics: v “Enclosure ID settings ” v “Fibre-channel loop and ID se[...]

T able 22. Description of Figure 32 Number Description 1 Enclosure ID Fibre-channel loop and ID settings When you install a hard disk drive in the storage subsystem, the drive tray plugs into a printed circuit board called the midplane . The midplane sets the fibre-channel loop ID automatically , based on the enclosure ID switch setting and the phy[...]

CAUTION: When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are installed, note the following: v Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. v Use of controls or adjustments or performa[...]

Installing SFP modules The DS4700 Express requires SFP modules. SFP modules convert electrical signals to optical signals that are required for fibre channel transmission to and from RAID controllers. After you install the SFP modules, you use fibre-optic cables to connect the DS4700 Express to other fibre channel devices. Before installing SFP mod[...]

v Y ou must remove the fiber-optic cable from the SFP module before you remove the SFP module from the port. Refer to “Removing SFP modules” on page 60 for more information. v The maximum operating speed of the fibre channel port is determined by two factors: the speed of the SFP module that is installed and the speed of the fibre channel conne[...]

3. Remove the protective cap from the SFP port. Save the protective cap for future use. 4. Insert the SFP module into the host port until it clicks into place. See Figure 35. 5. Connect an LC-LC fibre-channel cable. For information about the LC-LC cable, see “Using LC-LC fibre-channel cables” on page 61. Removing SFP modules Complete the follow[...]

v For SFP modules that contain wire tabs, unlock the SFP module latch by pulling the wire latch outward 90°, as shown in Figure 37. 3. With the SFP latch in the unlocked position, extract the SFP module. v For SFP modules that contain plastic tabs, slide the SFP module out of the port. v For SFP modules that contain wire tabs, grasp the wire latch[...]

Connecting an LC-LC cable to an SFP module Complete the following steps to connect an LC-LC fibre-channel cable to an SFP module: Statement 3: CAUTION: When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are installed, note the following: v Do not remove the covers. Removing the covers of the laser product could [...]

4. Carefully insert this end of the LC-LC cable into an SFP module that is installed in the DS4700 Express. The cable connector is keyed to ensure it is inserted into the SFP module correctly . Holding the connector , push in the cable until it clicks into place, as shown in Figure 40. 5. Remove the two protective caps from the other end of the LC-[...]

Removing an LC-LC fibre-channel cable Complete the following steps to remove an LC-LC fibre-channel cable: Attention: T o avoid damaging the LC-LC cable or SFP module, make sure that you observe the following precautions: v Press and hold the lever to release the latches before you remove the cable from the SFP module. v Ensure that the levers are [...]

For more information about connecting to these devices, see the documentation that comes with the LC-SC fibre-channel cable adapter . The following sections provide the procedures for properly connecting and removing an LC-SC fibre-channel cable. Connecting an LC-SC cable adapter to a device Complete the following steps to connect an LC-SC fibre-ch[...]

2. Connect one end of an LC-LC cable to an SFP module in the DS4700 Express. For instructions, see “Using LC-LC fibre-channel cables” on page 61. 3. Remove the two protective caps from the LC connector end of the LC-SC cable adapter as shown in Figure 44. Save the protective caps for future use. 4. Carefully insert the other end of the LC-LC ca[...]

Attention: T o avoid damaging the LC-LC cable, make sure you press and hold the lever to release the latches before you remove the cable from an LC-SC cable adapter . Ensure that both levers are in the released position when removing the cable. When removing the cable from the SFP module, make sure you do not grasp the SFP module plastic tab. 1. On[...]

Connecting storage expansion enclosures to the DS4700 Express Attention Before powering on the DS4700 Express Storage Subsystem, it must be populated with at least two E-DDMs. If at least two E-DDMs are not installed in each attached storage expansion enclosure or DS4700 Express Storage Subsystem, when you power on the DS4700 Express and its attach[...]

Overview of steps to connect storage expansion enclosures to a storage subsystem T o connect storage expansion enclosures to the storage subsystem, perform the following steps: Note: The following procedures are for "cold-case" procedures (in which the DS4700 Express is powered down when storage expansion enclosures are connected, as in t[...]

1. Follow the instructions in the Installation, User's, and Maintenance Guide for your DS4000 storage expansion enclosure to set up and mount the storage expansion enclosures. 2. Select a cabling topology appropriate for the number of storage expansion enclosures you will connect to the DS4700 Express. If you are connecting external storage ex[...]

Figure 49 and Figure 50 show the locations of controllers A and B, the single-ported fibre-channel host channels, Ethernet ports, and dual-ported fibre-channel drive channels at the back of the DS4700 Express Storage Subsystem. T able 23 provides a list of the drive channels that are associated with each of the controllers on the DS4700 Express Sto[...]

T able 24. DS4700 Express Storage Subsystem (Model 72) host ports and drive channels (continued) Number Description 3 Drive Channel 1 - Port 2 on Controller A Drive Channel 2 - Port 2 on Controller B 4 Drive Channel 1 - Port 1 on Controller A Drive Channel 2 - Port 1 on Controller B 5 Host Port 4 6 Host Port 3 7 Host Port 2 8 Host Port 1 One DS4700[...]

redundant drive channel pair . As Figure 53 shows, when you connect additional storage expansion enclosures, you can connect them by using the additional port of the drive channel. Left ESM Left ESM Right ESM Right ESM Controller A Controller B 1 2 2 1 ds470044 Figure 52. One DS4700 Express and two storage expansion enclosure — Not recommended ca[...]

One DS4700 Express and three storage expansion enclosures If you are cabling one DS4700 Express Storage Subsystem and three storage expansion enclosures, Figure 54 shows the recommended cabling topology . One DS4700 Express and four storage expansion enclosures If you are cabling one DS4700 Express Storage Subsystem and four storage expansion enclo[...]

Figure 57 on page 76 shows a cabling topology that is not recommended because all six storage expansion enclosures are connected to a single drive port of the dual-ported drive channel in each controller . Left ESM Left ESM Right ESM Right ESM Controller A Controller B 1 2 2 1 ds470051 Left ESM Right ESM Left ESM Right ESM Left ESM Right ESM Left E[...]

One DS4700 Express and two or more storage expansion enclosures in a mixed configuration A mixed configuration is a configuration in which you have more than one type of storage expansion enclosure. If possible, it is recommended that you do not mix different types of storage expansion enclosures in the same drive channel pair . Figure 58 on page 7[...]

DS4700 Express Storage Subsystem and supported storage expansion enclosure drive cabling schemes The following sections show cabling schemes for supported storage expansion enclosures and the DS4700 Express Storage Subsystem: v “One DS4700 Express and one EXP100 storage expansion enclosure” on page 80 v “One DS4700 Express and two EXP100 stor[...]

DS4700 Express Storage Subsystem drive cabling rules and recommendations Refer to these general rules and recommendations when completing the cabling steps in the cabling schemes described in this section. 1. Do not connect a combination of more than six EXP810 storage expansion enclosures to the two ports of a dual-ported drive channel. Failure to[...]

DS4000 storage subsystem. Figure 59 shows the location of the ports. T able 25. DS4700 Express drive ports connected to EXP810 ESM ports labeled 1B Number Description 1 DS4700 Express 2 First EXP810 storage expansion enclosure 3 ESM Port 1A 4 ESM Port 1B 5 Other storage expansion enclosures 6 Last EXP810 storage expansion enclosure 7 DS4700 drive p[...]

storage expansion enclosure's ESM ports. T able 26. DS4700 Express drive ports connected to 14-drive storage expansion enclosure ESM In and Out ports Number Description 1 DS4700 Express 2 First 14-drive storage expansion enclosure 3 ESM In port 4 ESM Out port 5 Other storage expansion enclosures 6 Last 14-drive storage expansion enclosure 7 DS[...]

Perform the following steps to create the recommended cabling scheme as shown in Figure 61: 1. Connect either port 2 or port 1 of the dual-ported drive channel 1 in controller A of the DS4700 Express to the IN port ( 1 ) on the left ESM of the EXP100. 2. Connect either port 1 or port 2 of the dual-ported drive channel 2 in controller B of the[...]

4. Connect the OUT port ( 2 ) on the right ESM in the second EXP100 ( 4 )t o port 2 of drive channel 2 on the DS4700 Express. One DS4700 Express and three or more EXP100 storage expansion enclosures T o connect three or more storage expansion enclosures to a DS4700 Express Storage Subsystem, alternately connect a storage expansion enclo[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 64: 1. Connect the OUT port ( 2 ) on the left ESM in the first EXP100 ( 3 ) to the IN port ( 1 ) on the left ESM in the third EXP100 ( 5 ). 2. Connect the IN port ( 1 ) on the right ESM in the third EXP100 ( 5 )t ot h e OUT port [...]

Perform the following steps to create the recommended cabling scheme shown in Figure 65: 1. Connect the OUT port ( 2 ) on the left ESM in the first EXP100 ( 3 ) to the IN port ( 1 ) on the left ESM in the third EXP100 ( 5 ). 2. Connect the IN port ( 1 ) on the right ESM in the third EXP100 ( 5 )t ot h e OUT port [...]

One DS4700 Express and one EXP710 storage expansion enclosure Figure 66 shows the recommended cabling scheme for one DS4700 Express Storage Subsystem and one EXP710 storage expansion enclosure. Perform the following steps to create the recommended cabling scheme as shown in Figure 66: 1. Connect either port 2 or port 1 of the dual-ported drive chan[...]

2. Connect the OUT port ( 2 ) on the right ESM in the first EXP710 ( 3 ) to port 1 of drive channel 1 on the DS4700 Express. 3. Connect port 1 of drive channel 1 on the DS4700 Express to the IN port ( 1 ) on the left ESM in the second EXP710 ( 4 ). 4. Connect the OUT port ( 2 ) on the right ESM in the second EXP710 ( ?[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 69: 1. Connect the OUT port ( 2 ) on the left ESM in the first EXP710 ( 3 ) to the IN port ( 1 ) on the left ESM in the third EXP710 ( 5 ). 2. Connect the IN port ( 1 ) on the right ESM in the third EXP710 ( 5 )t ot h e OUT port [...]

Perform the following steps to create the recommended cabling scheme shown in Figure 70: 1. Connect the OUT port ( 2 ) on the left ESM in the first EXP710 ( 3 ) to the IN port ( 1 ) on the left ESM in the third EXP710 ( 5 ). 2. Connect the IN port ( 1 ) on the right ESM in the third EXP710 ( 5 )t ot h e OUT port [...]

One DS4700 Express and one EXP810 storage expansion enclosure Figure 71 shows the recommended cabling scheme for one DS4700 Express Storage Subsystem and one EXP810 storage expansion enclosure. Perform the following steps to create the recommended cabling scheme shown in Figure 71: 1. Connect either port 2 or port 1 of the dual-ported drive channel[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 72: 1. Connect port 2 of drive channel 1 on the DS4700 Express to port 1B ( 1 )o n the left ESM in the first EXP810 ( 2 ). 2. Connect port 1B ( 1 ) on the right ESM in the first EXP810 ( 2 )t op o r t1o f drive channel 2 on the DS4700 Expres[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 73: 1. Connect port 1A on the left ESM in the first EXP810 ( 2 ) to port 1B ( 1 )o n the left ESM in the third EXP810 ( 4 ). 2. Connect port 1A on the right ESM in the third EXP810 ( 4 ) to port 1B ( 1 )o n the right ESM in the first E[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 74: 1. Connect port 1A on the left ESM in the first EXP810 ( 2 ) to port 1B ( 1 )o n the left ESM in the third EXP810 ( 4 ). 2. Connect port 1A on the right ESM in the third EXP810 ( 4 ) to port 1B ( 1 )o n the right ESM in the first E[...]

Perform the following steps to create the recommended cabling scheme shown in Figure 75: 1. Connect port 1A on the left ESM in the first EXP810 ( 2 ) to port 1B ( 1 )o n the left ESM in the third EXP810 ( 4 ). 2. Connect port 1A on the right ESM in the third EXP810 ( 4 ) to port 1B ( 1 )o n the right ESM in the first E[...]

12. Connect port 2 of drive channel 2 on the DS4700 Express to port 1B ( 1 )o n the right ESM in the sixth EXP810 ( 7 ). One DS4700 Express and two or more storage expansion enclosures in a mixed configuration When you cable the DS4700 Express Storage Subsystem to storage expansion enclosures that are in a mixed configuration, it is rec[...]

T able 27. Description of Figure 76 Number Description 1 DS4700 Express Storage Subsystem 2 EXP100 3 EXP810 4 IN port 5 OUT port 6 Port 1B 7 Port 1A Figure 77 on page 96 shows an unacceptable EXP710, EXP810, and EXP100 intermix configuration in a DS4700 Express Storage Subsystem environment. The cabling is unacceptable because storage subsystem con[...]

T able 28. Description of Figure 77 Number Description 1 DS4700 Express Storage Subsystem 2 EXP100 3 EXP810 4 IN port 5 OUT port 6 Port 1B 7 Port 1A Figure 78 on page 97 shows cabling variations when intermixing EXP100, EXP710, and EXP810 storage expansion enclosures behind a DS4700 Express Storage ESM B ESM A ESM B ESM A ESM B ESM A ESM B ESM A 1 [...]

Subsystem. T able 29. Description of Figure 78 Number Description 1 DS4700 Express Storage Subsystem 2 EXP100 3 EXP810 4 EXP710 Storage expansion enclosure settings This section provides information about storage expansion enclosure settings. For additional detail, refer to the Installation, User's, and Maintenance Guide for your storage expan[...]

If required, use a small screwdriver or the tip of a pen to push the small buttons above and below each enclosure ID digit to change the enclosure ID setting. Press the button located above the digit to lower the digit by one. Press the button located below the digit to raise the digit by one. Note: Some DS4000 storage expansion enclosures ship wit[...]

The problem with soft AL_P As addressing is that addresses may change between LIPs. This possibility increases the dif ficulty of troubleshooting drive channel problems, since one cannot easily ascertain whether the same device with a different address or dif ferent device may be causing a problem. IBM recommends always setting the enclosure IDs in[...]

Connecting secondary interface cables This section is applicable to (direct) out-of-band management configurations only . If your configuration uses host-agent (in-band) management, skip this section. Use the Ethernet interface ports on the back of the storage subsystem to connect the controllers for direct management of the storage subsystems (see[...]

T able 32. DS4700 Express Storage Subsystem (Model 72) location of host ports on controllers Number Description 1 Ethernet ports Note: Ethernet ports on the left controller are labeled 2 and 1. On the right controller , they are labeled 1 and 2. 2 Serial port T able 33. DS4700 Express Storage Subsystem (Model 72) location of host ports on controlle[...]

Then, the server will be able to recognize the storage subsystem correctly for host-agent (in-band) management. Host-agent (in-band) management method This method requires host-agent software that you install on the host server . The host-agent software allows the DS4000 Storage Manager client program to manage the DS4000 Storage Subsystem using th[...]

Y ou can either use the default controller Ethernet IP addresses for out-of-band connection or change the default controller Ethernet IP addresses by using Dynamic Host Configuration Protocol (DHCP) or Storage Manager client. Refer to the DS4000 Storage Manager Installation, User's and Maintenance Guide for the appropriate operating system for[...]

Connecting hosts to the DS4700 Express The DS4700 Express supports redundant direct attached connections to up to four hosts (models 72A and 72H). T o ensure full protection against the loss of any one fibre channel path from the host servers to the DS4700 Express Storage Subsystem, always use redundant host connections by connecting each host to t[...]

Note: The alignment of the single-ported host channels on controller A are opposite those of controller B. Before inserting an SFP module into a host port, verify that the SFP module is rotated correctly to match the alignment of the host port on the RAID controller . Do not force-fit. 2. Connect the fibre channel cables from the SFP modules in the[...]

page 106, or a maximum of four redundant host connections for the DS4700 Express Storage Subsystem model 72, as shown in Figure 86 on page 107. Note: Figure 86 on page 107 shows a connection to a fibre channel host bus adapter in the DS4700 Express Storage Subsystem. Y ou can also connect to fibre channel switch ports (not shown). Host 1, Host Adap[...]

For examples of redundant, partially-redundant, and non-redundant host and drive loop configurations, see “Fibre channel host loop configurations.” Fibre channel connections The storage subsystem fibre channel connection consists of up to four host fibre-channel loops and a redundant drive fibre-channel loop. The host fibre-channel loops provid[...]

Note: The minimum DS4700 Express configuration is two partitions. The maximum is 128 partitions. Configuration upgrades are available as upgrade options. Contact your IBM reseller or marketing representative for more information. Redundant host and drive loops This section provides examples of DS4700 Express host fibre channel configurations. DS470[...]

In Figure 89, the fibre channel switches are connected together via the inter-switch link (ISL) to form a dual SAN fabric. In Figure 90 on page 1 10, the fibre channel switches are not connected together . Each switch forms its own SAN fabric. Host system with two host adapters Host system with two host adapters Switch Switch Interswitch link ds470[...]

Figure 91 shows an example of a two-cluster configuration. Installing the storage subsystem configuration Using the information gathered in the previous sections, install the host systems and host adapters. Notes: 1. See the documentation provided with your host adapters for installation requirements and procedures. 2. Use the correct host adapter [...]

Attach fiber-optic interface cables to each host adapter . Y ou will connect the other end of the cables to the controller later in the installation process. For more information about handling fiber-optic cables, see “Handling fibre-optic cables” on page 57. Cabling the ac power supply for ac models Complete the following steps to connect the [...]

CAUTION: T o reduce the risk of electric shock or energy hazards: v This equipment must be installed by trained service personnel in a restricted-access location, as defined by the NEC and IEC 60950-1, First Edition, The Standard for Safety of Information T echnology Equipment. v Connect the equipment to a reliably grounded safety extra low voltage[...]

Dual-level redundant dc cabling In a dual-level redundancy dc cabling scheme, both dc power connectors in each of the dc power supply and fan units are connected to a dc power source. Y ou will need two additional dc power cables (IBM Option P/N 42D3329) to cable in this way . The dc power connectors A1 ( 5 ) are connected to the left dc powe[...]

Complete the following steps to connect the dc power supply cable: 1. Using the supplied strap, tie the power supply cord to the rail to provide strain relief for the power cord. 2. Connect the dc power cable to the power supply . See Figure 94 for the dc power supply connector PIN positions. T able 38. DC power supply connector - PIN descriptions [...]

4. Complete the wiring from the disconnect device to the terminal marked -48V of the Reliably grounded safety extra low voltage (SEL V) dc power source. Connect the POS RTN and ground lines of the dc power cable to the terminals marked POS RTN and GND on the dc power source, as shown in Figure 95. For maximum protection against power loss, connect [...]

11 6 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Chapter 4. Operating the storage subsystem This chapter describes operating procedures for the DS4700 Express. T o ensure optimal operation of your system, see “Best practices guidelines” on page 5 Performing the DS4000 Health Check process The DS4000 Health Check process is a sequence of suggested actions developed by IBM to help users verify [...]

Save the storage subsystem profile before performing any controller or ESM firmware upgrades. Save the storage subsystem profile and all *.cfg files to a server disk that will remain accessible in the event of a DS4000 storage configuration failure. Note: When you upgrade firmware, you must upgrade all client package components to the same release [...]

v Create and maintain a cabling diagram of the current SAN configuration. Keep this diagram updated as you make configuration changes, and keep the cabling diagram available for review . v Create and maintain a list of other components that are being used within the cabling diagram (such as the host system, fibre channel switches, and other SAN att[...]

v Ye s - Turn of f both power switches on each enclosure that you intend to connect to the power . v No - Turn of f both power switches on all enclosures in the storage subsystem. For dc power supply and fan units only , turn off the disconnect devices for all of the dc power supply and fan units. 2. Ensure that all power cords are connected. See ?[...]

8. Determine the status of all storage subsystems and components in the configuration by completing the following steps: a. Check all LEDs on each component in the storage expansion enclosures. Ensure that all the LEDs show normal status. For more information on LED status for storage expansion enclosures, see “Checking the LEDs” on page 125 or[...]

v Appropriate host kit for your operating system, which includes the DS4000 Storage Manager Support CD containing the appropriate Storage Manager version and storage subsystem controller firmware. Depending on the DS4700 Express model you order , your DS4700 Express will ship with either the Microsoft Windows host software attachment kit or with yo[...]

In addition, to download the latest version of the DS4000 Storage Manager host software, the DS4700 Express Storage Subsystem controller firmware and NVSRAM, and the latest DS4000 ESM firmware, go to the following Web site: www .ibm.com/systems/support/storage/disk The DS4000 Storage Manager client provides the best way to diagnose and repair stora[...]

7. Select the Drives tab. 8. Scroll through the list to find the drive values such as Product ID. Firmware updates Attention: Save the storage subsystem profile before performing any controller or ESM firmware upgrades. Save the DS4700 Express storage subsystem profile and all configuration (*.cfg) files to a server disk that will remain accessible[...]

1. Open the Subsystem Management window . 2. Select the component button for each storage expansion enclosure in this storage subsystem, and view the status of each of the components. The status for each component is either Optimal or Needs Attention. 3. Does any component have a Needs Attention status? v Ye s - Go to step 4. v No - All components [...]

AC power supply and fan unit LEDs This section describes the primary power supply and fan unit LEDs on the DS4700 Express Storage Subsystem (models 70A, 70H, 72A, and 72H). T able 40. Power supply and fan unit LEDs Number LED Normal Status Problem Status 1 Power supply and fan unit Power On Off 2 Service Action Allowed (OK to Remove) Off On 3 Servi[...]

T able 41. DC power supply and fan unit LEDs Number LED Normal Status Problem Status 1 1 DC power supply and fan unit power On Off 2 Service Action Allowed (OK to Remove) Off On 2 3 Service Action Required (Fault) Off On 2 4 1 Direct Current Enabled On Off Notes: 1. Although the symbols for dc power supply and fan unit power and Direct Current Enab[...]

T able 42. Front LEDs and controls Number LED Normal Status Problem Status 1 Drive Activity LED On (not blinking) - No data is being processed Blinking - Data is being processed Off 2 Drive Fault LED Off Blinking - Drive, volume, or storage array locate function On (not blinking) 3 Global Locate On N/A 4 Global Summary Fault Off On 5 Global Power O[...]

T able 43. Battery unit LEDs Number LED Normal Status Problem Status 1 Service Action Allowed (OK to Remove) Off On 2 Service Action Required (Fault) Off On 3 Battery Charging Green means on, ready Blinking green means charging Off The Global Power , Global Summary Fault, and Global Locate LEDs are general indicators for the entire DS4700 Express S[...]

T able 44. Rear controller LEDs, controls, and connectors Number LED Normal Status Problem Status 1 Service Action Allowed (OK to Remove) Off On 2 Service Action Required (Fault) Off On ds470061 2 3 4 5 6 7 8 9 8 1 6 7 9 10 11 12 13 2 3 4 5 6 7 8 9 8 1 6 7 9 10 11 12 13 Figure 100. Rear controller LEDs, controls, and connectors - Model 70 ds470062 [...]

T able 44. Rear controller LEDs, controls, and connectors (continued) Number LED Normal Status Problem Status 3 Cache Active On - Data is in cache Off - Caching is turned off. No data in cache Not applicable 4 Diagnostic On - Seven-segment LEDs indicate diagnostic code Off - Seven-segment LEDs indicate enclosure ID Not applicable 5 Heartbeat Blinki[...]

T able 45. Host and drive channel LED definitions L1 L2 Definition Off Off When both LEDs for a host or drive channel are off, this indicates one or more of the following conditions: v The host or drive channel ports are bad or the SFPs are faulty . v An SFP module is inserted with no fibre channel cable attached. Note: If the SFP is inserted in a [...]

display numbers. The diagnostic LED tuns of f when the numeric display shows the storage subsystem enclosure ID. The numeric display shows various diagnostic codes as the enclosures perform the startup process after each power cycle or reset. After diagnostics are complete, the current storage subsystem enclosure ID is displayed. Diagnostic codes i[...]

v Instructions in a hardware or software procedure require that you turn off the power . v An IBM technical support representative instructs you to turn off the power . v A power outage or emergency situation occurs, see “Restoring power after an unexpected shutdown” on page 137. T urning off the storage subsystem Use the following procedure to[...]

Attention: T urning off and turning on power without waiting for the storage subsystem disk drives to spin down can damage the drives and might cause data loss. Always let at least 70 seconds elapse from when you turn off the power until you turn on the power again. Power-off overview Review the following information before you continue with the po[...]

5. T o diagnose and correct the fault, complete the following steps: a. Run the Recovery Guru by selecting the Recovery Guru toolbar button in the Subsystem Management window . b. Complete the recovery procedure. If the Recovery Guru directs you to replace a failed component, use the individual LEDs to locate the failed component. c. When the recov[...]

1. If you have time, stop all I/O activity to the storage subsystem by shutting down the host or disconnecting the storage subsystem logical drives through the host. 2. Check the LEDs. Make note of any Needs Attention LEDs that are on so you can correct the problem when you turn on the power again. 3. T urn off all power supply switches, starting w[...]

the appropriate DS4000 Storage Subsystem Installation, User's, and Maintenance Guide during any attended power-up procedure. v A storage subsystem in an optimal state should recover automatically from an unexpected shutdown and unattended simultaneous restoration of power to system components. After power is restored, contact IBM technical sup[...]

If the module temperature exceeds 45° C (1 13° F), the storage management software displays a Needs Attention icon in the Subsystem Management window . If event monitoring is enabled, and event notification is configured, the software issues the following two critical problem notifications: v If one power supply shuts down, the storage management[...]

CAUTION: The power switch on the power supply and fan unit does not turn off the electrical current supplied to the device. The DS4700 Express Storage Subsystem might also have more than one connection to dc power . T o remove all electrical current from the device, ensure that all dc power cords are disconnected from the power supply and fan unit [...]

Attention: There are different replacement FRU part numbers for the DS4700 Express controller with certain cache sizes. The DS4700 Express Storage Subsystem profile has the information on the installed cache memory size in the DS4700 Express controllers. Refer to the storage subsystem profile and see “Parts listing” on page 188 for the correct [...]

Subsystem cache battery The battery unit in each controller provides backup power to maintain any cached data not written to disks in the event of a power loss. The battery units can provide power to the data caches in the RAID controllers for up to three days. Statement 2: CAUTION: When replacing the lithium battery , use only an equivalent type b[...]

Data caching starts after the battery completes the startup tests. Attention: Write caching is suspended while a battery pack is either charging or self-testing. Figure 104 shows the location of the Battery LEDs. T able 48. Battery unit LEDs Number LED Normal Status Problem Status 1 Service Action Allowed (OK to Remove) Off On 2 Service Action Requ[...]

144 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Chapter 5. Replacing components This chapter contains information about replacing a controller , bezel, filter and filter retainer , E-DDM CRU, power supply and fan unit CRU, dc power supply and fan unit CRU, battery unit, SFP module, and midplane. Attention: Always replace a failed component as soon as possible. The Recovery Guru menu function in [...]

Attention Never remove a controller , power supply and fan unit, or battery unit unless the Service Action Allowed status LED is turned on. Doing so can result in a potential loss of data availability . If the Needs Attention LED is lit and the associated Service Action Allowed status LED is not lit, then you must perform additional diagnostics bef[...]

v Y es – Go to step 4. v No – Another component might require attention before you can remove the controller . Use the Recovery Guru function in the DS4700 Express Subsystem Management window to identify and correct any additional failures. If there are none, proceed with step 4 to replace the controller . Electrostatic discharge can damage sen[...]

c. With the SFP latch in the unlocked position, extract the SFP module. v For SFP modules that contain plastic tabs, slide the SFP module out of the port. v For SFP modules that contain wire tabs, grasp the wire latch and pull the SFP module out of the minihub port. d. Replace the protective cap on the SFP module. e. Place the SFP module into a sta[...]

a. Slide one controller into the empty slot in the storage subsystem. Be sure that the lever is pulled straight out as you slide the controller in, as shown in Figure 108. b. As you slide the controller into the empty slot, make sure the guide pins on the side of the controller fit into the notches. After the guide pins fit into the notches and the[...]

v If the new controller is offline, go to step 17. 17. If the newly inserted controller is in an offline state, see the DS4000 Storage Manager client online help for instructions on bringing the controller online. If necessary , open the DS4000 Storage Manager Subsystem Management window and place the controller on-line; select the off-line control[...]

Replacing a filter and filter retainer Note: Inspect the filter as needed. Replace the filter every three months or sooner , depending on your environment. Complete the following steps to replace a filter and filter retainer: 1. Remove the bezel by grasping the sides of the bezel and pulling it slowly toward you, as shown in Figure 109 on page 150.[...]

– For optimum performance, never insert a E-DDM into a storage subsystem without first confirming the drive firmware level. In the event of a drive firmware mismatch, schedule down time as soon as possible to upgrade the drive firmware to the same version. For information about supported drive firmware versions, refer to the DS4000 Support Web si[...]

T able 49. Drive LED activity (continued) LED LED state Descriptions Activity LED Steady green The green LED lights to indicate that the drive is properly installed and is spun up by the DS4000 controller . Fault LED Flashing amber The amber LED flashes to indicate that a drive has been identified by the software. Fault LED Steady amber The amber L[...]

3. Determine the bay into which you want to install the E-DDM. 4. Remove the blank tray by doing the following: a. Release the latch on the E-DDM CRU by pressing on the inside of the bottom of the tray handle. b. Lift the closed latch to its open position. (The latch is at a 90° angle to the front of the E-DDM when open.) c. Pull the blank tray ou[...]

Note: Make sure that the EMC gasket does not snag on the bezel. d. Push the tray handle down until it latches into place. Replacing hot-swap E-DDMs E-DDM problems include any malfunctions that delay , interrupt, or prevent successful I/O activity between the hosts and the E-DDMs in the storage subsystem. This includes transmission problems between [...]

Attention: After you remove a E-DDM CRU, wait 70 seconds before replacing or reseating the E-DDM CRU to allow it to properly spin down. Failure to do so may cause undesired events. 8. Use the DS4000 Storage Manager subsystem management window to verify that the E-DDM is shown in the Storage Subsystem Management window . Replacing multiple E-DDMs Th[...]

v Which method most closely matches the recommended drive upgrade procedure that is provided in the operating system or the storage-management software documentation. v Which RAID level is used on the affected drives. (RAID 0 requires you to replace all the E-DDMs at the same time.) v How much downtime is acceptable as you swap the E-DDMs. v The nu[...]

Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity . For details about handling static-sensitive devices, see “Handling static-sensitive devices” on page 33. 4. Unpack the new E-DDMs. Set the E-DDMs on a dry , level surface away from magnetic fields. Save the packing material and docume[...]

the E-DDMs are powered up after the storage subsystem. For instructions on powering up the storage subsystem, see the storage subsystem documentation. c. T urn on the power to the storage subsystem; then restart or turn on the power to the host. 9. T urn on the power to each device, based on the power-on sequence in step 8 on page 158. T o turn on [...]

2. Use the DS4000 Storage Manager software to check the status of the unit. Correct any problems that are reported. 3. Back up the data in the arrays and logical drives that are configured using the E-DDMs that you are replacing. Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity . For deta[...]

v If the Drive fault LED stays on or the Drive activity LED stays off, the new E-DDM might be faulty or might be an uncertified drive. See the DS4000 Storage Manager software for problem determination. In the case of an uncertified drive, verify that the drive options or drive FRU part number is correct for your storage subsystem. 8. Use the DS4000[...]

Attention: All devices on the loop must have the same data transfer rate, which means that you must set the link rate on the storage expansion enclosure to the same rate as the storage subsystem to which it is connected. Information about supported DS4000 storage subsystems can be obtained from the certified Compatibility Matrix, which can be found[...]

If both Link Rate indicator LEDs are on, the data transfer rate is set for 4 Gbps. If one Link Rate indicator light is on, the data transfer rate is set for 2 Gbps. 3. Is the data transfer rate set correctly? v Ye s - Go to step 8 on page 164. v No - Go to step 5 to change the setting. Attention: When you handle static-sensitive devices, take preca[...]

b. Use a small screwdriver or the tip of a ball point pen to slide the Link Rate switch to the left or right to set the desired fibre channel operating speed. Attention: Although the Link Rate LED indicates the correct speed setting, the link rate speed does not change until after you cycle power to the storage subsystem. 6. Repeat step 1 on page 1[...]

replaceable units (CRUs) and do not require preventive maintenance. Use only the supported power supply and fan units for your specific storage subsystem. Each power supply and fan unit has a built-in sensor that detects the following conditions: v Over-voltage v Over-current v Overheated power supply If any of these conditions occurs, one or both [...]

CAUTION: Never remove the cover on a power supply and fan unit or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components. If you suspect a problem with one of these parts, contact a service tec[...]

DANGER Electrical current from power , telephone, and communication cables is hazardous. T o avoid a shock hazard: v Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. v Connect all power cords to a properly wired and grounded electrical outlet. v Connect to p[...]

Attention: The left and right power supply and fan units are seated in the DS4700 Express chassis in opposite orientations. If you cannot fully insert the power supply and fan unit into the power supply and fan unit bay , flip it 180° and reinsert it. Make sure that the levers lock into place in the storage subsystem chassis. Do not force fit. The[...]

v Ye s - Select the Recovery Guru toolbar button in the Subsystem Management window and complete the recovery procedure. If a problem is still indicated, contact IBM Customer and T echnical Support. v No - Go to step 20. 20. Create, save, and print a new storage subsystem profile. Replacing a dc power supply and fan unit CAUTION: This unit has more[...]

CAUTION: T o reduce the risk of electric shock or energy hazards: v This equipment must be installed by trained service personnel in a restricted-access location, as defined by the NEC and IEC 60950-1, First Edition, The Standard for Safety of Information T echnology Equipment. v Connect the equipment to a reliably grounded safety extra low voltage[...]

Attention: The fans in the dc power supplies draw in fresh air and force out hot air . The dc power supplies are hot-swappable and redundant; however , if the fans in one dc power supply and fan unit fail, you must replace the entire failed dc power supply and fan unit within 72 hours to maintain redundancy and optimum cooling. Do not remove the fa[...]

placing the appropriate labels on the dc power supply and fan unit CRU to mark the LEDs correctly . The label sheet contains the peel-off labels that you actually place on the dc power supply and fan unit CRU. 5. Using the information provided on the instruction sheet, place the labels on the dc power supply and fan unit CRU to correctly mark the L[...]

9. T urn off the dc power supply switch, set disconnect devices to the OFF position, and then unplug the power cord from the failed dc power supply and fan unit. Attention: a. IBM recommends that you use the disconnect device to remove power before disconnecting the dc power cord. b. The power switch on the dc power supply and fan unit does not tur[...]

15. Based on the status of the Power and Fault LEDs, choose one of the following steps: v Fault LED is on and dc power LED are off - The new unit might be installed incorrectly . The dc power supply and fan unit switch may not be turned on. The power cord plug may not be fully inserted into the power source or the power supply and fan unit dc socke[...]

20. Create, save, and print a new storage subsystem profile. Replacing a battery unit Each RAID controller in the DS4700 Express Storage Subsystem contains a rechargeable battery unit that maintains data in the cache memory for three days without power to the unit. Use the following procedure if the DS4000 Storage Manager client instructs you to re[...]

Attention: This product contains a sealed Lithium Ion battery . Discharged Lithium and Lithium Ion batteries are currently designated to be disposed of in normal trash. However , users should contact their municipal waste disposal facility prior to discarding any used battery in normal trash. Alternatively , IBM recommends users may return Lithium,[...]

Save all packing materials in the event you need to return the new battery unit. 8. Insert the new battery unit into the controller chassis. Make sure the new battery unit is inserted in the correct orientation in the battery unit bay . Press the battery unit fully into the bay until it clicks into place. Do not force fit. The battery unit is desig[...]

9. Reconnect the interface cable. 10. Check the Bypass and Fault LEDs for the new SFP module. 1 1. Based on the status of the Bypass and Fault LEDs, choose one of the following steps: v Bypass LED or Fault LED is on - Reinstall the SFP module and cables, and verify that the SFP module and cables are securely connected. Use the fibre channel loopbac[...]

1. Complete the power-off sequence described in “T urning off the storage subsystem” on page 134 ensuring that the DS4000 storage subsystem is turned off before any attached storage expansion enclosures. Attention: a. The power switch on the power supply and fan unit does not turn off the electrical current supplied to the device. The DS4700 Ex[...]

Attention: Do not stack E-DDM CRUs on top of each other . Protect the E-DDM CRUs from vibrations or sudden shocks. 10. Use a #1 Phillips screwdriver to loosen the four front cage frame screws on the midplane, as shown in Figure 1 18. 1 1. On the back of the DS4700 Express, remove the four Phillips screws (two screws on each side) that hold the side[...]

14. Grasp the blue handle in the center of the front cage frame and pull it outward to slide the front cage frame out approximately two inches. Grab the two sides of the front cage frame and remove it from the chassis. Note: The front cage frame might be tightly secured in the chassis. IBM recommends mounting the DS4700 Express chassis back in the [...]

23. Re-insert the controllers and reconnect the fibre channel cables. 24. Re-insert the power supply and fan units and reconnect the power supply cords. 25. (For DS4700 Express Storage Subsystems with dc power supply and fan units only) T urn on all attached disconnect devices before proceeding to step 26. 26. Power on the attached storage expansio[...]

Chapter 6. Hardware maintenance This chapter contains information to help you solve some of the simpler problems that you might have with your storage subsystem. It contains the problem indicators and error messages along with suggested actions to take to resolve the problem. For instructions on how to obtain service and technical assistance for yo[...]

T able 51. Symptom-to-FRU index Problem indicator Component Possible cause Possible solutions Amber LED is lit Drive CRU (Drive Fault LED) Note: The green Drive Activity LED might also be lit. Drive failure Replace the failed drive. Note: The amber LED on the drive is also lit if the drive slot has a blank drive tray inserted. Drive uncertified V e[...]

T able 51. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions Amber LED is lit (continued) Front panel (Global Summary Fault LED) General machine fault A Fault LED is lit somewhere on the storage subsystem (check for Amber LEDs on CRUs). General machine fault (continued) Open the DS4700 Express Storage Su[...]

T able 51. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions All green LEDs are off All CRUs Subsystem power is off Check that all storage subsystem power cables are plugged in and the power switches are on. If applicable, check that the main circuit breakers for the rack are powered on. AC power failure[...]

T able 51. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions One or more green LEDs are off Power supply CRUs Power cable is unplugged or switches are turned off. Make sure that the power cable is plugged in and that the switches are turned on. All drive CRUs Midplane failure Replace the midplane. Contac[...]

T able 51. Symptom-to-FRU index (continued) Problem indicator Component Possible cause Possible solutions Hard disk drive not visible in RAID management software Several CRUs Drive or drives failed Replace failed drive or drives. FC cable failed Replace FC cable. SFP failed Replace SFP . RAID controller failure Replace RAID controller . Midplane fa[...]

T able 52. Parts listing (DS4700 Express Storage Subsystem) Index DS4700 Express Storage Subsystem FRU P/N 1 Rail kit 41Y5152 2 AC power supply and fan unit FRU, 600 W (Models that are not NEBs Level 3/T elco compliant) 41Y5155 AC power supply and fan unit FRU, 600 W (Models that are NEBs Level 3/T elco compliant) 1 42D3346 DC power supply and fan [...]

T able 52. Parts listing (DS4700 Express Storage Subsystem) (continued) Index DS4700 Express Storage Subsystem FRU P/N 5 2 Gbps FC, 73.4 GB/10K drive module 2 Gbps FC, 146.8 GB/10K drive module 2 Gbps FC, 300 GB/10K drive module 2 Gbps FC, 36.4 GB/15K drive module 2 Gbps FC, 73.4 GB/15K drive module 2 Gbps FC, 146.8 GB 15K drive module 4 Gbps FC, 3[...]

Appendix A. Records Whenever you add options to your DS4700 Express, be sure to update the information in this appendix. Accurate, up-to-date records make it easier to add other options and provide needed data whenever you contact your IBM technical support representative. Identification numbers Record and retain the following information. Product [...]

Storage subsystem and controller information record T able 53 provides a data sheet for recording storage subsystem names, management types, Ethernet hardware addresses, and IP addresses. Make a copy of this table and complete the information for your storage subsystems and controllers. Use the information to set up the BOOTP table for the network [...]

Sample information record T able 54 shows a sample information record. This network contains storage subsystems that are managed by using both the direct-management and host-agent-management method. T able 54. Sample information record Storage subsystem name Management method Controllers-Ethernet and IP addresses, and host name Host-IP address and [...]

Installed device records Use the following table to record the number of the hard disk drives that you replaced and the corresponding bay number . Attention: If you replace a hard disk drive in the wrong drive bay it might cause a loss of data. T able 55. Hard disk drive record Bay number Hard disk drive serial number Replaced hard disk drive seria[...]

Appendix B. Rack mounting template This appendix provides duplicate copies of the rack mounting templates. If you want to tear out the templates from this document for easier use, use these copies rather than those provided in “Installing the support rails” on page 36. Use the following templates (Figure 121 on page 196 and Figure 122 on page 1[...]

3U 3U 2U 2U 1U 1U 0U 0U Rail assembly (Front Left) Bezel (Front Left) Bezel (Front Right) Rail assembly (Front Right) FRONT Rack Mounting T emplate DS4700 Install first ---> Install second ---> Install second ---> Install first ---> <--- Install first <--- Install first ds470001 Figure 121. Front rack mounting template 196 IBM Sys[...]

® 3U 3U 2U 2U 1U 1U 0U 0U Rail assembly (Rear Left) Rail assembly (Rear right) Printed in the U.S.A REAR Rack Mounting T emplate DS4700 Rail mounting guide ds470002 Figure 122. Rear rack mounting template Appendix B. Rack mounting template 197[...]

198 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Appendix C. Power cords For your safety , IBM provides a power cord with a grounded attachment plug to use with this IBM product. T o avoid electrical shock, always use the power cord and plug with a properly grounded outlet. IBM power cords used in the United States and Canada are listed by Underwriter's Laboratories (UL) and certified by the[...]

T able 56. IBM power cords (continued) IBM power cord part number Feature code Description Used in these countries or regions 39Y7917 9820 Power Cord (250v , 10A, 2.8m) Afghanistan, Albania, Algeria, Andorra, Angola, Armenia, Austria, Azerbaijan, Belarus, Belgium, Benin, Bosnia and Herzegovina, Bulgaria, Burkina Faso, Burundi, Cambodia, Cameroon, C[...]

T able 56. IBM power cords (continued) IBM power cord part number Feature code Description Used in these countries or regions 39Y7923 9825 Power Cord (250v , 10A, 2.8m) Abu Dhabi, Bahrain, Botswana, Brunei Darussalam, Channel Islands, Cyprus, Dominica, Gambia, Ghana, Grenada, Guyana, Hong Kong, Iraq, Ireland, Jordan, Kenya, Kuwait, Liberia, Malawi,[...]

202 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Appendix D. Additional DS4000 documentation The following tables present an overview of the IBM System Storage DS4000 Storage Manager , Storage Subsystem, and Storage Expansion Enclosure product libraries, as well as other related documents. Each table lists documents that are included in the libraries and what common tasks they address. Y ou can a[...]

T able 57. DS4000 Storage Manager V ersion 10 titles by user tasks (continued) Title User tasks Planning Hardware installation Software installation Configuration Operation and administration Diagnosis and maintenance IBM System Storage DS4000 Fibre Channel and Serial A T A Intermix Premium Feature Installation Overview UU U U DS4800 Storage Subsys[...]

DS4700 Storage Subsystem library T able 59 associates each document in the DS4700 Storage Subsystem library with its related common user tasks. T able 59. DS4700 Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance [...]

DS4500 Storage Subsystem library T able 60 associates each document in the DS4500 (previously F AStT900) Storage Subsystem library with its related common user tasks. T able 60. DS4500 Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Dia[...]

DS4400 Storage Subsystem library T able 61 associates each document in the DS4400 (previously F AStT700) Storage Subsystem library with its related common user tasks. T able 61. DS4400 Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Dia[...]

DS4300 Storage Subsystem library T able 62 associates each document in the DS4300 (previously F AStT600) Storage Subsystem library with its related common user tasks. T able 62. DS4300 Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Dia[...]

DS4200 Express Storage Subsystem library T able 63 associates each document in the DS4200 Express Storage Subsystem library with its related common user tasks. T able 63. DS4200 Express Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Di[...]

DS4100 Storage Subsystem library T able 64 associates each document in the DS4100 (previously F AStT100) Storage Subsystem library with its related common user tasks. T able 64. DS4100 Storage Subsystem document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Dia[...]

DS4000 Storage Expansion Enclosure documents T able 65 associates each of the following documents with its related common user tasks. T able 65. DS4000 Storage Expansion Enclosure document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance [...]

Other DS4000 and DS4000-related documents T able 66 associates each of the following documents with its related common user tasks. T able 66. DS4000 and DS4000–related document titles by user tasks Title User T asks Planning Hardware Installation Software Installation Configuration Operation and Administration Diagnosis and Maintenance IBM Safety[...]

Appendix E. Accessibility This section provides information about alternate keyboard navigation, which is a DS4000 Storage Manager accessibility feature. Accessibility features help a user who has a physical disability , such as restricted mobility or limited vision, to use software products successfully . By using the alternate keyboard operations[...]

T able 67. DS4000 Storage Manager alternate keyboard operations (continued) Short cut Action Alt+ underlined letter Access menu items, buttons, and other interface components by using the keys associated with the underlined letters. For the menu options, select the Alt + underlined letter combination to access a main menu, and then select the under[...]

Notices This information was developed for products and services offered in the U.S.A. IBM may not offer the products, services, or features discussed in this document in other countries. Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or [...]

Adobe and PostScript are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries. Cell Broadband Engine is a trademark of Sony Computer Entertainment, Inc., in the United States, other countries, or both and is used under license therefrom. Intel, Intel Xeon, Itanium, and Pentium are trad[...]

Some software might differ from its retail version (if available) and might not include user manuals or all program functionality . Particulate contamination Attention: Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in combination with other environmental factors such as humidity or temperature might [...]

205/A015 3039 E. Cornwallis Road P .O. Box 12195 Research T riangle Park, North Carolina 27709-2195 U.S.A. In the request, be sure to include the publication part number and title. When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obliga[...]

failure to satisfy the protection requirements resulting from a nonrecommended modification of the product, including the fitting of non-IBM option cards. This product has been tested and found to comply with the limits for Class A Information T echnology Equipment according to CISPR 22/European Standard EN 55022. The limits for Class A equipment w[...]

Deutschland: Einhaltung des Gesetzes über die elektromagnetische V erträglichkeit von Geräten Dieses Produkt entspricht dem “Gesetz über die elektromagnetische V erträglichkeit von Geräten (EMVG)”. Dies ist die Umsetzung der EU-Richtlinie 2004/108/EG in der Bundesrepublik Deutschland. Zulassungsbescheinigung laut dem Deutschen Gesetz übe[...]

Glossary This glossary provides definitions for the terminology and abbreviations used in IBM System Storage DS4000 publications. If you do not find the term you are looking for , see the IBM Glossary of Computing T erms located at the following Web site: www .ibm.com/ibm/terminology This glossary also includes terms and definitions from: v Informa[...]

auto-volume transfer/auto-disk transfer (A VT/ADT). A function that provides automatic failover in case of controller failure on a storage subsystem. A VT/ADT . See auto-volume transfer/auto-disk transfer . AW T . See Abstract Windowing T oolkit . basic input/output system (BIOS). The personal computer code that controls basic hardware operations, [...]

drive channels. The DS4200, DS4700, and DS4800 subsystems use dual-port drive channels that, from the physical point of view , are connected in the same way as two drive loops. However , from the point of view of the number of drives and enclosures, they are treated as a single drive loop instead of two different drive loops. A group of storage exp[...]

(FC-PH) services to transmit SCSI commands, data, and status information between a SCSI initiator and a SCSI target across the FC link by using FC frame and sequence formats. field replaceable unit (FRU). An assembly that is replaced in its entirety when any one of its components fails. In some cases, a field replaceable unit might contain other fi[...]

initial program load (IPL). The initialization procedure that causes an operating system to commence operation. Also referred to as a system restart, system startup, and boot. integrated circuit (IC). A microelectronic semiconductor device that consists of many interconnected transistors and other components. ICs are constructed on a small rectangl[...]

logical drive data to verify that it can be accessed, and optionally scans the logical drive redundancy information. medium access control (MAC). In local area networks (LANs), the sublayer of the data link control layer that supports medium-dependent functions and uses the services of the physical layer to provide services to the logical link cont[...]

Standard Architecture (EISA) bus. ISA and EISA boards plug into an IA or EISA slot, while high-speed PCI controllers plug into a PCI slot. See also Industry Standard Architecture , Extended Industry Standard Architecture . polling delay . The time in seconds between successive discovery processes during which discovery is inactive. port. A part of [...]

serial A T A. The standard for a high-speed alternative to small computer system interface (SCSI) hard drives. The SA T A-1 standard is equivalent in performance to a 10 000 RPM SCSI drive. serial storage architecture (SSA). An interface specification from IBM in which devices are arranged in a ring topology . SSA, which is compatible with small co[...]

elements must be defined to grant access to host computers and host groups using logical drive-to-LUN mappings. striping. Splitting data to be written into equal blocks and writing blocks simultaneously to separate disk drives. Striping maximizes performance to the disks. Reading the data back is also scheduled in parallel, with a block being read [...]

230 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

Index A a hot-swap E-DDM replacing 155 a hot-swap hard disk drive replacing 155 about this document xxi ac power cords and receptacles 27 ac power recovery 27 ac power requirements 27 ac power supply cabling 1 1 1 ac power supply and fan unit replacing 49, 164 ac power supply and fan unit, removal 42 ac site wiring requirements 27 accessible docume[...]

contamination, particulate and gaseous 217 controller information record 192 removal 41 replacing 48 controller information 123 controllers description 8 LEDs 129 location 8 replacing 146 cooling 28 Copy Services Guide 203 customer replaceable units (CRUs) 6 removal 40 removing a ac power supply and fan unit 41 removing a controller 41 removing a d[...]

emergency shutdown 136 enclosure ID 55 enclosure ID settings 97 enclosure information 123 environmental requirements and specifications 24 Ethernet connecting to RAID controller 100 F FCC Class A notice 218 fibre channel connections 107 loop configurations 107 fibre channel loop ID midplane 97 setting 97 Fibre Channel overview 3 fibre-channel cable[...]

link rate setting, verifying 161 loop configurations overview 107 redundant 108 loop redundancy , described 68 M managed hub in fibre channel loop configurations 107, 108 using to connect host to RAID controller 105 memory , cache cache active LED 141 size of 140 midplane replacing 178 Migration Guide 203 mixed configuration cabling topologies 76 o[...]

restoring power after planned shutdown 1 19 after power supply shutdown 138 restoring power after an emergency 137 RS-232 serial port 100 S safety information xv safety , static-sensitive devices 33 SA T A technology 3 sending your comments to IBM xxix settings fibre-channel loop and ID 55, 56 storage expansion enclosure 97 SFP modules described 19[...]

Web sites (continued) premium feature activation xxviii readme files xxvii SAN support xxvii switch support xxvii 236 IBM System Storage DS4700 Express Storage Subsystem: Installation, User ’s and Maintenance Guide[...]

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 Part Number: 94Y8472 Printed in USA GC26-7843-05 (1P) P/N: 94Y8472[...]