HP (Hewlett-Packard) A7173A manuel d'utilisation

HP A7 1 7 3A P CI-X Dual C hannel Ultr a3 20 S C S I Ho st B us A dapte r Suppo r t Gui de HP -UX 1 1i v1 , 1 1i v2 , and 1 1i v3 HP P art Number: J6 3 7 3-90030 P ublished: Augus t 200 7[...]

© Copyright 2007 Hewlett-P ackard Development Company , L.P Legal Notices The information in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of mer chantability and fitness for a particular purpose. Hewlett-Packard sha[...]

T a ble of C onten ts Abou t This Doc ument ........................................................................................................ 7 I nt en de d Au di en ce .................................................................................................................................7 H P- UX R el ea se N am e an d Re le as e I[...]

D et er mi ni ng P at h, B us , an d Sl ot I nf or ma ti on ............................................................................29 S et ti ng a nd C on fi rm in g th e Da ta T ra ns fe r Ra te .........................................................................30 U si ng t he E FI U ti li ty o n HP I nt eg ri ty S ys te ms ............[...]

I EC S ta te me nt ( W o rl dw id e) .............................................................................................................73 D OC S ta te me nt ( Ca na da )................................................................................................................7 3 S pé ci fi ca ti on A TI C la ss e A (F ra nc e) ....[...]

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Abo ut T his Doc ument This document describes how to install, configure, manage, and troubleshoot the HP A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter (A7173A adapter) on HP-UX 11i platforms. The document edition indicates when this document w as published. The manufacturing part number indicates the order in which this edition was publ[...]

T able 2 P ublishing History Details (continued) Publication Date Supported Product V ersions Operating S ystems Supported Document Manufacturing P ar t Number February 2007 B.11.11.0701 HP-UX 11i v1 January 2007 J6373-90023 B.11.23.0612 HP-UX 11i v2 December 2006 B.11.31 HP-UX 11i v3 August 2007 B.11.11.0706 HP-UX 11i v1 January 2007 J6373-99999 B[...]

HP W elcomes Y our Co mments HP welcomes any comments or suggestions you hav e for this Support Guide. Please use either of the following methods to respond: • V ia email: netinfo_feedback@cup.hp.com -OR- • Using a feedback form: http://docs.hp.com/assistance/feedback.html Please include the following information along with your comments: • T[...]

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1 HP A7 1 7 3A Adapt er Ov er v i e w This chapter provides an overview of the features and capabilities of the A7173A adapter: • “ About the A7173A Adapter ” (page 11) . • “The A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter ” (page 11) . Abou t the A7 1 7 3A Adapt er The HP A7173A Dual Channel PCI-X Ultra320 SCSI Host Bus Ada[...]

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2 Inst alling the A7 1 7 3A Adapt er This chapter contains the following sections explaining installation of the A7173A adapter: • “Installation Overview” (page 13) • “Locating A7173A Adapter Softw are” (page 14) • “Installing A7173A Adapter Softw are” (page 14) • “System Firmw are” (page 15) • “Installing A7173A Adapter[...]

L ocating A7 1 7 3A Adapt er So ft w ar e The drivers, utilities and manpages for the A7173A adapter are on the HP-UX application release CD. They are also av ailable online at the HP Softw are Depot. T o locate the software at the HP Softw are Depot, follow these steps: • Go to the Softw are Depot website: http://www .software.hp.com • Search [...]

S y stem F irm war e The firmw are on HP 9000 systems is known as Processor Dependent Code (PDC). On HP Integrity ® systems, the system firmw are is based on the Extensible Firmware Interface (EFI) specifications. There is also an EFI driver component of the A7173A adapter firmware for Integrity ® systems. Pr ocesso r Dependent C ode (PDC) on HP [...]

Inst alling A7 1 7 3A Adapt er Har d w ar e This section contains information about installing the A7173A adapter hardware in a supported HP-UX system. W ARNI NG! The installation procedures in this section require opening the computer cabinet, which might expose you to high-energy (high-amperage) circuits and sharp edges on the equipment chassis. [...]

For more information on OLAR or OL*, see the following documents: • T o determine whether OLAR or OL* is supported on your system, see the HP Ultra320 SCSI Host Bus Adapter Support Matrix : http://docs.hp.com/en/netcom.html#SCSI%20Host%20Bus%20Adapters • For detailed instructions on using OLAR on HP-UX 11i v1, see Configuring HP-UX for Peripher[...]

http://docs.hp.com/en/netcom.html#SCSI%20Host%20Bus%20Adapters Identify ing Compatible S CS I Cables Make all SCSI bus connections to the A7173A adapter with shielded, 68-pin cables (multimode, L VD or SE). The connectors on the cables are keyed for proper mating. Figur e 2- 1 Identifying SCSI Cable Connectors 1 3 2 4 3 Internal 50-pin Narrow SCSI [...]

C onf irming the A7 1 7 3A Adapte r F irm w are V er sion T o verify the firmw are version currently running on an online A7173A adapter , use the mptutil <device_file> command. For more information about online and offline firmware verification or updates, see “V erify or Update A7173A Adapter Firmware On HP 9000 Systems” (page 46) , or [...]

---- V P D I N F O R M A T I O N ------------------------------------------- Adapter : PCI-X DUAL CHANNEL ULTRA320 SCSI ADAPTER Part Number : A6961-60011 Engineering Code : C-4429 Specification : PW=15W PCI-X=64BIT,133MHZ Serial Number : P105283605 Manufacturing Date Code : C-4429 EFI driver version : 1.05.00.01 In the sample output, the SCSI firmw[...]

2. For more detailed information on the installed A7173A adapters, including verification of devices that have been connected to the A7173A adapter(s), use the mptconfig <dev file> command for each channel of each A7173A adapter . Use the device files displayed in the ioscan -fnkd mpt output. For example: # mptconfig /dev/mpt8 Scan For Device[...]

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3 C onf igur ing the A7 1 7 3A Adapt er This chapter contains the following sections describing configuration of the A7173A adapter: • “Setting the SCSI P arameters” (page 23) • “ About SCSI IDs” (page 24) • “ About the Maximum Data T ransfer Rate” (page 24) • “ About Bus W idth” (page 25) • “ About Auto-T ermination” [...]

NO TE: The bus width parameter cannot be set offline on rp24xx and rp54xx systems. The SCSI parameters for A7173A adapters installed in HP Integrity systems can be confirmed or changed offline using the Extensible Firmw are Interface (EFI), see “Using the EFI Utility on HP Integrity Systems” (page 32) . The SCSI parameters for an A7173A adapter[...]

• Fast (20 MB/s) • Ultra (40 MB/s) • Ultra2 (80 MB/s) • Ultra160 (160 MB/s) • Ultra320 (320 MB/s) The actual data transfer rate between the A7173A adapter and the other SCSI devices on the bus depends on the maximum data transfer rate that is automatically negotiated for each of the devices on the bus. For example, if you set the A7173A a[...]

TIP: HP recommends that y ou always use the A7173A ’ s maximum bus width (16 bits), unless you hav e Narrow (8-bit) devices on the bus and you are experiencing problems with the connection. Setting the Bu s Wi dth Offline For HP 9000 systems, the Boot Console Handler (BCH) menus are used to set bus width offline. See “Using the BCH Menus on HP [...]

C onf igur atio n W orksheet The worksheet in T able 3-1 provides a convenient format for recording installation details for multiple SCSI adapters: T able 3- 1 SCSI ID Settings Channel SCSI ID Hardwar e P ath Slot # S ystem Name Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Ch. A Ch. B Configuration W orksheet[...]

Setting and C onf irming S CS I P ar ameters Off line If the A7173A adapter is installed in a supported HP 9000 system, use the scsi command, accessed from the BCH menus, to set or confirm the SCSI parameters offline. If the A7173A adapter is installed in a supported HP Integrity ® system, a menu driven Extensible Firmw are Interface (EFI) utility[...]

3. Compare the installed PDC v ersion with the recommended PDC version to use the A7173A adapter with your system. For recommended PDC (System Firmware) v ersions, see the HP Ultra320 SCSI Host Bus Adapter Support Matrix , at: http://docs.hp.com/en/netcom.html#SCSI%20Host%20Bus%20Adapters If you do not hav e the correct PDC version on y our system,[...]

1. From the BCH Main Menu, enter in to display the Information Menu. TIP: T o return to the BCH Main Menu from other BCH menus, enter main . 2. From the Information Menu, enter io to display I/O interface information. Example 3-2 shows the information for a typical system: Ex ample 3- 2 I/O Inter face Inf ormation I/O CHASSIS INFORMATION Cell Info [...]

The BCH command syntax and output are not identical across all HP 9000 systems. T o view the scsi command syntax for your system, enter help scsi from the BCH service menu. Example 3-3 shows a typical scsi command help screen: Ex ample 3-3 T ypical BCH scsi Command Help Sc reen Service Menu: Enter command > help scsi ---- SCSI Help -------------[...]

T o change the data transfer rate, enter the scsi command from the Service Menu, using the syntax: scsi <path> rate <rate> Where <path> is the path to the A7173A adapter , and <rate> is the target rate setting; see the scsi help screen for acceptable <rate> v alues for your system. For example, the command to set the r[...]

NO TE: T o run the utility from a CD or DVD, the disc containing the pscsi utility must be inserted in a drive when y ou boot the system, to allow device mapping. 1. T o reboot the system, enter this command from the system prompt: # /usr/sbin/shutdown -ry now The system reboots. 2. When the “EFI Boot Manager ” menu appears, use the arrow keys [...]

Ex ample 3-5 T ypical L ist of Av ailable SCSI Controllers Available SCSI Ultra320 Controllers SCSI Slot Seg Bus Dev Channel ------------------------------------------------------------------ XX 1 00 20 01 Ch A Ch B SCSI Ultra320 Core-IO 01 2 00 80 01 Ch A Ch B SCSI Ultra320 Dual-Channel PCI-X Adapter -----------------------------------------------[...]

Ex ample 3-6 T ypical Adapter Pr operties Sc reen Adapter Properties Adapter PCI PCI PCI Bus Dev Fnc 53C1030 80 02 00 <Device Properties> <RAID Properties> Boot Support [Enabled BIOS & OS] Host SCSI ID [ 7] Secondary Cluster Server [No] Termination Control [Auto] <Restore Defaults> Use the Arrow keys to select a setting, then [...]

Ex ample 3- 7 T ypical Dev ice Properties Sc reen Device Properties SCSI Device Identifier MB/Sec MT/Sec Data Scan Scan ID Width ID LUNs > 0 0 - 320 [160] [16] [Yes] [Yes] * 1 - 320 [160] [16] [Yes] [Yes] 2 - 320 [160] [16] [Yes] [Yes] 3 - 320 [160] [16] [Yes] [Yes] 4 - 320 [160] [16] [Yes] [Yes] 5 - 320 [160] [16] [Yes] [Yes] 6 - 320 [160] [16][...]

Ex ample 3-8 Selec ting a Controller f or Fir mwar e Update Available SCSI Ultra320 Controllers Flash SCSI EFI Slot Seg Bus Dev Part Firmware Driver ------------------------------------------------------------------- XX 00 20 01 No 1.03.06.00 1.02.09.00 SCSI Ultra320 Core-IO 01 00 80 01 Yes 1.03.35.65 1.04.02.00 SCSI Ultra320 Dual-Channel PCI-X Ada[...]

Updating the EFI Dr iv er If you select an EFI driv er file from the Select Firmware Image menu, (such as lsimpt.rom in Example 3-9 ), then press Enter , a confirmation screen appears: You are about to install EFI Driver version 1.04.02.00 Do you want to proceed? (y/n) If you press y , a status screen appears, displaying the progress of the operati[...]

lsimpt.rom Ultra320 EFI Driver 1.04.02.00 10300.rom Ultra320 EFI Driver 1.03.00.00 ----------------------------------------------------------------------- Back Save As: Navigate using Arrow Keys and <Tab>. Choose Save As to input a file name Use the arrow keys to highlight a firmware image file, then use T ab to select Save As . Following Sav[...]

NO TE: For important details about each of the SCSI parameters that can be set online using the mptconfig command, see: • “ About SCSI IDs” (page 24) • “ About the Maximum Data T ransfer Rate” (page 24) • “ About Bus W idth” (page 25) Using mpt conf ig f or Online Conf igur atio n The mptconfig command has options for changing eac[...]

Ex ample 3- 1 1 T ypical ioscan -kfn Command Output # ioscan -kfn Class I H/W Path Driver S/W State H/W Type Description ============================================================================== ext_bus 10 1/0/14/0/0 1 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011 /dev/mpt14 2 target 7 1/0/14/0/0/1.0 tgt CLAIMED DEVICE disk 12 1/0/14/0/0/1.0[...]

Id Version Rate Width Device ------------------------------------------------------------------------------ 0 BF1468A4B3 HPB5 Ultra320 Wide Disk 1 BD1468A4C5 HPB4 Ultra320 Wide Disk 3 BD1468A4C5 HPB4 Ultra320 Wide Disk 4 BF1468A4B3 HPB5 Ultra320 Wide Disk 5 BF1468A4B3 HPB5 Ultra320 Wide Disk 8 BF1468A4B3 HPB5 Ultra320 Wide Disk - PROLIANT 4L7E*DB 2[...]

------------------------------------------------------------------------------ CA UTION: Set the initiator ID on a SCSI adapter carefully . Duplicate SCSI IDs on a SCSI bus can result in bus hangs, system hangs, and system panics. The mptconfig command will attempt to verify that no targets are using the specified ID before the change is allow ed; [...]

Setting S CS I P ar ameter s to Def ault V alues The default SCSI parameter settings for the A7173A adapter are: • SCSI ID = 7 • Maximum Data T ransfer Rate = MAX (320 MB/s) • Bus W idth = 16 bits (Wide) Offline • On HP 9000 systems, the SCSI parameters for the A7173A adapter can be set to the default v alues offline , using the SCSI comman[...]

4 HP A7 1 7 3A Adminis tr atio n and Management This chapter contains the following sections detailing A7173A adapter Administration and Management tasks: • “P erformance T uning” (page 45) • “Online Replacement of the A7173A Adapter ” (page 45) • “V erify or Update A7173A Adapter Firmw are On HP 9000 Systems” (page 46) • “V e[...]

IMPORT ANT: If the replacement A7173A adapter is new , meaning that it has never been installed, the mpt driver will continue to use the SCSI parameter settings that are already configured on the slot. If the A7173A adapter has been previously installed in a different slot or system, the SCSI parameter settings will not migrate to the new slot or s[...]

1. Use the ioscan -fnkd mpt command to determine the device file for each channel of the A7173A adapter . Example 4-1 shows the command output for a typical system: Ex ample 4- 1 T ypical ioscan -fnk d Command O utput # ioscan -fnkd mpt Class I H/W Path Driver S/W State H/W Type Description ==========================================================[...]

Ex ample 4- 2 T ypical mptutil <de vice_file> Command Output # mptutil /dev/mpt14 ****************************************************************************** **** **** **** M P T U T I L S u p p o r t T o o l **** **** **** **** for Ultra320 SCSI Controller **** **** **** **** Version 1.02 : Oct 22 2006 **** **** **** **** (c) Copyright 20[...]

3. Use the -d option of the mptutil command to update the SCSI firmw are on the A71713A adapter . The command syntax is: mptutil -d <firmware_image> <device_file> where <firmware_image> is the name of the SCSI firmw are image file you w ant to flash to ROM on the A7173A adapter , and <device_file> is the device file name for[...]

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5 T r ouble shooting The A7173A adapter is a single field-replaceable unit (FRU) and does not contain any field-serviceable parts. T roubleshooting procedures described in this chapter are limited to verifying that the adapter is operational and that a v alid connection is established. This chapter contains the following sections describing how to [...]

6. Confirm that the correct disk device firmware v ersion is installed on your hard disks. Y ou can obtain disk firmware updates from the ITRC w eb site ( http://itrc.hp.com ). Search for the model number of the disk driv e(s) that you w ant to update. Installation instructions are provided in the firmware download package. 7. Run the Support T ool[...]

5. If the A7173A adapter firmw are is not current, install the latest firmw are, see “Using mptutil to V erify or Update A7173A Adapter Firmware” (page 46) . a. Use the mptutil <dev_file> command to display information about the controller . b. Examine the “Chip Information” section of the mptutil output to determine if the driver sta[...]

T able 5- 1 Problems Detected By Domain V alidation (continued) P ossible Cause Problem P oor shielding or grounding. Excessive cross talk P oor shielding or grounding. Excessive system noise When Domain V alidation determines that communication with the target device is not possible at the maximum data transfer rate supported by the adapter (Ultra[...]

SCSI Ultra320 0/3/1/1 instance 9: Domain Validation failed, device offline. Target ID = 2. R est or ing P erfo rmance A fter A Domain V alidati on F allback o r F ailure First, you must fix the problem with the target hardw are that caused the fallback. See T able 5-1 (page 53) for a listing of the types of problems that Domain V alidation can dete[...]

# mptutil Usage: mptutil [options] <dev_file> <dev_file> = /dev/mptX Options: -c Read PCI Config Space -d <firmware_image> Download Firmware -t <tmtype> [target_id] Perform Task Management where <tmtype> can be, bus_reset SCSI Bus reset tgt_reset <target_id> Target Reset -u <filename> Upload Firmware -R Res[...]

Ex ample 5-4 Using mptutil to Display Detailed SCSI Inf ormation and VPD for an Adapter # mptutil /dev/mpt14 ****************************************************************************** **** **** **** M P T U T I L S u p p o r t T o o l **** **** **** **** for Ultra320 SCSI Controller **** **** **** **** Version 1.02 : Oct 22 2006 **** **** **** [...]

SUSPENDED This state indicates that the controller has been suspended. Use the -c option to display the PCI Configuration data stored on the A7173A adapter . Information is displayed as hexadecimal data. For example: # mptutil -c /dev/mpt14 ****************************************************************************** **** **** **** M P T U T I L S[...]

Use the mptutil -d <firmware_image> <device_file> command to download and flash the mpt SCSI firmw are into the ROM of the A7173A adapter specified by <device_file> . See “Using mptutil to V erify or Update A7173A Adapter Firmware” (page 46) . W ARNI NG! Changing the adapter firmware is a DESTRUCTIVE operation. Any active I/Os[...]

**** **** ****************************************************************************** WARNING: This is a DESTRUCTIVE operation. This might result in failure of current I/O requests. Do you want to continue? (y/n) [n]... y Task Management operation completed successfully ****************************************************************************[...]

# mptutil -R /dev/mpt14 ****************************************************************************** **** **** **** M P T U T I L S u p p o r t T o o l **** **** **** **** for Ultra320 SCSI Controller **** **** **** **** Version 1.02 : Oct 22 2006 **** **** **** **** (c) Copyright 2003 Hewlett-Packard Development Company, L.P. **** **** **** ****[...]

A hardw are event monitor monitors the hardw are for unusual behavior (known as an event) and sends a message to EMS, which notifies the system administrator and provides suggestions for correcting the problem. There is a disk monitor that will monitor all disks attached to the A7173A adapter . For more information about EMS and other online diagno[...]

For more information about PCI Error Recovery , see the documents at: http://www .docs.hp.com/en/ha.html#PCI%20Error%20Recovery C ontac ting Y our Hew lett -P ack ar d Repr esent ati ve If the equipment is covered by an HP service contract, document the problem as a service request and forw ard it to your HP representative. Include the following in[...]

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A S C S I Sens e C odes S CS I Statu s Code s , Sens e K e y s, and S ense/Qualif ier C ode P airs This appendix contains tables listing SCSI Status Codes, SCSI Sense Keys, and a partial list of the most common SCSI Additional Sense Code/Qualifier Code Pairs. This information is used to interpret SCSI error messages. Example A-1 shows a typical SCS[...]

T able A- 2 S CSI Sense Ke ys (complete list) Meaning SCSI Sense K ey No sense 0 Recovered error 0x1 Not ready 0x2 Medium error 0x3 Hardw are error 0x4 Illegal request 0x5 Unit attention 0x6 Data protect 0x7 Blank check 0x8 V endor-specific 0x9 Copy aborted 0xa Aborted command 0xb Equal 0xc V olume overflow 0xd Miscompare 0xe Reserved 0xf T able A-[...]

T able A-3 M ost Common SCSI Additional Sense Code/Qualifier P airs (continued) Meaning SCSI Qualifier Code SCSI Additional Sense Code Logical unit not ready , cause not reportable 0x00 0x04 Logical unit in process of becoming ready 0x01 Logical unit not ready , initializing command required 0x02 Logical unit not ready , manual intervention require[...]

T able A-3 M ost Common SCSI Additional Sense Code/Qualifier P airs (continued) Meaning SCSI Qualifier Code SCSI Additional Sense Code Logical unit not supported 0x00 0x25 Inv alid field in parameter list 0x00 0x26 P arameter not supported 0x01 P arameter value inv alid 0x02 Threshold parameters not supported 0x03 W rite protected 0x00 0x27 Hardw a[...]

T able A-3 M ost Common SCSI Additional Sense Code/Qualifier P airs (continued) Meaning SCSI Qualifier Code SCSI Additional Sense Code Medium format corrupted 0x00 0x31 T ape length error 0x00 0x33 Enclosure failure 0x00 0x34 Enclosure services failure 0x00 0x35 Saving parameters not supported 0x00 0x39 Medium not present 0x00 0x3a Medium not prese[...]

T able A-3 M ost Common SCSI Additional Sense Code/Qualifier P airs (continued) Meaning SCSI Qualifier Code SCSI Additional Sense Code Erase failure 0x00 0x51 Erase failure - incomplete erase operation detected 0x01 Cartridge fault 0x00 0x52 Media load or eject failed 0x00 0x53 Unload tape failure 0x01 Medium remov al prevented 0x02 Failure predict[...]

B S pec if icati ons T able B- 1 A7 1 7 3A Adapter Features and Specifications 6.6 X 4.0 inches (standard bracket) (167.6 X 106.7 mm) Dimensions (excluding bracket) ISA / EISA Bracket 15 W P ower Required 0 to 55 degrees C (dry bulb) Operating T emperature Range -40 to 105 degrees C (dry bulb) Storage and Shipping T emp. Range 5% to 90% non-condens[...]

T able B- 1 A7 1 7 3A Adapter Features and Specifications (continued) Y es, it contains Vital Product Data (VPD), HP PCI IDs, SCSI P arameters, and Chip Configuration. It is also configured with the HP part number for easy identification when ioscan is used. Serial EEPROM The HP A7173A adapter board meets or exceeds the UL flamability rating 94 V0.[...]

C R egulatory Inf or mati on R egulatory St atemen ts This section contains all of the regulatory statements for the A7173A adapter . FCC S tatement (F or U .S .A. Only) The Federal Communications Commission (in 47 CFR 15.105) has specified that the following notice be brought to the attention of the users of this product. This equipment has been t[...]

Spéc if icati on A TI C lasse A (F r ance) DECLARA TION D’INST ALLA TION ET DE MISE EN EXPLOIT A TION d’un matériel de traitement de l’information (A TI), classé A en fonction des niveaux de perturbations radioélectriques émis, définis dans la norme européenne EN 55022 concernant la Compatibilité Electromagnétique. Cher Client, Confo[...]

Declar atio n of Co nfo rmity Figur e C - 1 A7 1 7 3A Adapter Declaration of Conformity Regulatory Statements 75[...]

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Glos sar y A address A specific location in memory , designated either numerically or by a symbolic name. asynchronous data transfer One of the w ays data is transferred over the SCSI bus. It is slow er than synchronous data transfer . B bit A binary digit. The smallest unit of information a computer uses. The v alue of a bit (0 or 1) represents a [...]

E electronically erasable programmable read-only memory (EEPROM) A memory chip typically used to store configuration information. See Non-V olatile Random Access Memory (NVRAM) . external SCSI device A SCSI device installed outside the computer cabinet. External SCSI devices are connected in a chain using shielded cables. F Fast SCSI A standard for[...]

megabyte (MByte) A measure of computer storage equal to 1024 kilobytes. motherboard See mainboard . In some countries, the term motherboard is not appropriate. multi-tasking The initiation and control of more than one sequence of operations. This allows programs to operate in parallel. multi-threading The simultaneous accessing of data by more than[...]

Read-Only Memory (ROM) Memory from which information can be read but not changed. The contents of ROM are not erased when the computer is turned off. Reduced Instruction Set Computer (RISC) core The HP A7173A adapter ’ s SCSI chips contain a RISC processor . S SCSI bus A host bus adapter and one or more SCSI peripherals connected by cables in a l[...]

W Wide SCSI A SCSI-2 feature allowing 16-bit transfers on the SCSI bus. This doubles the transfer rate ov er the standard 8-bit SCSI bus. Wide Ultra SCSI The ST A (SCSI T rade Association) term for SCSI bus width 16 bits, SCSI bus speed maximum data rate 40 MBytes/sec. Wide Ultra2 SCSI The ST A (SCSI T rade Association) term for SCSI bus width 16 b[...]

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Inde x A actual data transfer rate, 25 adapter bus width, 25 channels, 71 connecting external peripherals, 17 data transfer rate, 71 dimensions, 71 external terminator , 18 flash ROM, 71 installing, 16 maximum data transfer rate, 24 determining in BCH menus, 31 maximum dew point temperature, 71 maximum disks per channel, 71 OLAR of, 45 operating te[...]

P path, determining for adapter in BCH menus, 29 in ioscan output, 20 performance degraded, detecting, 53 recommendations, 45 R regulatory statements for adapter , 73 restrictions on number of hard drives per port, 71 S SCSI parameters bus width, 25 maximum data transfer rate, 24 determining in BCH menus, 31 setting to default v alues, 44 SCSI sele[...]

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*J6373-90030* Prin ted in the US[...]