Gateway 840 VT-100 инструкция обслуживания

Gatewa y 840 VT-100 User's Guide Installing Getting Help[...]

i Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Troubleshoo ting assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

ii 5 SAN LUN Map ping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 9 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

iii 9 Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Accessing e vent logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4 Contro ller events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

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1 1 Intr oduction This guide provides the operational and reference informati on to configure and ma nage the RAID controll ers installed in your Gateway 840 Series storage system. The controllers a re accessed through a VT -100 te rminal using a menu-based user interface, connected directly to the RAID controllers. This guide contains step-by-step[...]

2 Chapter 1: Introduction www .gate wa y .com Features Y our Gateway 840 ha s a menu-based software utility designed to c onfigure and manage the RAID controller in your new storage enclosure. It provides centralized m anagement to control pri mary storage asset s vital to ensuring maximum data reliabili ty , network up-t ime, and system serv iceab[...]

3 Troub leshooting a ssistan ce www .gate wa y .com T r oub leshooting assistance T o help troubleshoot problems with your system, the Event Logs chapter , as well as on-line help, provides a list of all the events that can occur , along with a suggested cause and actio n to take. When a warning or error event occurs, you can review the eve nt log,[...]

4 Chapter 1: Introduction www .gate wa y .com[...]

2 5 Accessing the Configuration Utility Thi s cha pte r pro vid es in for mat ion on acc ess ing t he configuration ut ility . R ead th is chapter to learn how to: ■ Access the utility ■ Use the VT -100 te rminal ■ Navigate the configuration utility ■ View controller in fo rmation[...]

6 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com Accessing the utility Y ou can acc ess the SA T A RAID con troller by using a VT -100 terminal co nnected to the RS-232 se rial ports on the controller’ s rear pa nel. Configure your terminal using the procedures desc ribed in “U sing the VT -100 terminal” on page 7 . Im[...]

7 Using the V T-100 termi nal www .gate wa y .com Using the VT -100 terminal Access to the RAID cont roller is accomplished by using its onboard configuration uti lity with a VT -100 terminal or terminal emulation connect e d to the RS- 232 serial port on the controlle r . A SA T A communi cation RS-232 cable (provided with the hardware) i s used t[...]

8 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com 3 From the computer o r terminal connected to the RAID c ontroller , start your terminal emulation software. 4 From the terminal window , press C TRL + W . T he Main M enu op ens. Y ou can now p erform all of the fun ctions described in the follo wing chapters. All steps begin[...]

9 Navigatin g the SATA RA ID configu ration utili ty www .gate wa y .com Na vigating the SA T A RAID configur ation utilit y The SA T A R AID configuration utility menu system can be navigated using the keys on your keyboard. The table below describes the primary navigation and selection methods. To D o t h i s T oggle interf ace from te xt-base to[...]

10 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com Menu system Main Menu Configuration Menu Controller Information Statistics Event Logs Diagnostics Enclosure Information Configuration Menu 840 SA T A RAID Configuration Utility View Configuration Array Configuration LUN Configuration Hot Spare Configuration Rebuild P arameter[...]

11 Navigatin g the SATA RA ID configu ration utili ty www .gate wa y .com Menu system (co ntinued) RS232 Setting 115200 57600 38400 19200 9600 Port ID Selection View Arra y Create Array Delete Array Expand Array Array Cache Configuration View Unused Drives Advanced Arra y Configuration Array Configuration Menu LUN Configuration Menu Hardware Config[...]

12 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com Menu system (co ntinued) Displays Controller P arameters Select Logical Drive View Access Statistics on P or t 0 View Access Statistics on P or t 1 View Access Statistics on Both P or ts Select Logical Drive Clear Access Statistics on P or t 0 Clear Access Statistics on P or [...]

13 Viewing c ontroll er informat ion www .gate wa y .com Vie wing contr oller inf ormation Detailed informati o n on the RAID controller is available through t he Main Menu, and includes: ■ C o n t r o l l e r W o r l d W i d e N a m e ( W W N ) ■ Firmware information ■ Run-time information ■ T e mper ature and voltage information T o view [...]

14 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com 2 From the Main Menu select Controller Inf ormation, then press E NTER . The Contro ller Information screen opens. 3 Select the controller you want to examine by usi ng the spacebar to select the controller , then p ress E NTER . If only one controller is present, only one se[...]

15 Viewing c ontroll er informat ion www .gate wa y .com Firmware Re vision The firmware version i n use by t he controller . Firmw are Date/Time Date and t ime of when the fi r mw are was crea ted. T o tal P ower on Cou nt The num ber of times this c ontroller has bee n powe r cycled. T otal P ower on Time The total length of time this con troller[...]

16 Chapte r 2: Access ing the Con figuration Uti lity www .gate wa y .com[...]

3 17 Creating Disk Arra ys This chapter provides informa tion on creating disk arrays. Read thi s chapter to le arn how to: ■ Understand arrays ■ Create arrays ■ Configure array read-ahea d and writeback cache ■ Assign hot spare drives ■ Delete an array ■ Expa nd an array ■ T rust an array[...]

18 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Over vie w Configuring a RAID system requires some planning to ma ke sure that you def ine the correct RAID le vels and array option s. It may be help ful to refer to the T opology chapter in the Gateway 840 SA T A RAID Enclosure Use r’ s Guide . This chapter will step you through th e proce[...]

19 Understandi ng arrays www .gate wa y .com Under standing arra ys Y ou can crea te an array at an y time. The table below desc ribes the drive requirements for each R AID level. T erminology The following describes th e terminology used when creating and managing arrays. RAID Level Minimum No. of Drives Maximum No. of Drives 01 1 2 12 1 2 53 1 2 [...]

20 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Initiali zation RAID 5/ 50 arra ys mu st hav e cons istent parity before they can be u sed to prot ect data. Ini tialization writes a kno wn pattern to all d r iv es in the arr ay . If you ch oose not to initializ e an arr ay , this is kno wn as a “trusted a rra y” and any dr ive failure w[...]

21 Understandi ng arrays www .gate wa y .com Optimization and drive selection for RAID 5 arrays T ypical RAID 5 implementations require a number of ste ps to write the data to the drives. In orde r to optimize your system performance based on t he type of w rit es you exp ect in y our o per atio n, w e have provided detailed information on optimizi[...]

22 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Creating arra ys Configuring th e arrays involves a few basic steps. All configurati o n pa rameters are stored on all hard drives that are members of the specific array . Th is makes it possible to remove and replace controllers without requiring any configuration changes. The configurations [...]

23 Cr eating arrays www .gate wa y .com T o view an array: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

24 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 2 From the Configuration Menu, select View Configura tion , then press E NTE R . The V iew Configu ration Screen opens. The following table provides a de scription of the fields shown on the screen. 3 Press E SC to return to the p re vious screen. Field D escr iption No . Drive n umber in the [...]

25 Cr eating arrays www .gate wa y .com T o create an array : 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

26 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 2 T o access the Array Configuration Menu, select Array Confi guration, then pre ss E NTER . The Array Configuratio n Menu opens. The Array Configuration Menu lets you review , create, delete, or other wise modify the activ e arrays.[...]

27 Cr eating arrays www .gate wa y .com 3 From the Array Co nfiguration Menu, select Create Arra y , then pr ess E NTER . The Array Name screen op ens.[...]

28 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 4 T y p e a n a m e f o r t h e a r r a y ( u s i n g a s m a n y a s 3 2 c h a r a c t e r s ) , t h e n p r e s s E NTER . Th e RAI D Le vel screen opens. 5 Highlight the appropria te RAID level, then press E NTER . The Configuratio n Ty p e screen opens.[...]

29 Cr eating arrays www .gate wa y .com 6 Sele ct Ma nual C onfig urat ion, then press E NTER . The Select Chunk Size screen opens. The available chunk sizes are 64 K, 128 K, and 256 K. This is the am ount of data that is written on a sin gle d rive before the controller mo v es to the next drive in the stripe. T o achieve optimum RAID 5 write perf[...]

30 Chapter 3: Cre ating Disk Arrays www .gate wa y .com In cases where y ou are performing larger writes to the controller , you could go up to 2 MB for a stripe size, since y o u have more data to c luster . Never exceed 2 M B for a stripe size, since the contr oller cannot cluster over this size. W e recommend that you keep the stripe size to 1 M[...]

31 Cr eating arrays www .gate wa y .com 7 Select the desired chunk size from the menu, then press E NTER . Th e Drive Selection Me nu opens. 8 Select the drives for the new array by doing the following: The controller will list all th e available drives for each attached enclosure(s). Y ou ca n choose to add a drive to the array by hig hlighting th[...]

32 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 9 T o continue, press the C TRL + D keys when you have complet ed your selections. The Drive Ca pacity R eser ve screen open s. Tips & T ricks The driv e capacit y reserve determines how m uch drive capacity to retain f or future cap acity fluctuatio ns of replacem ent drives . (This is n [...]

33 Cr eating arrays www .gate wa y .com 10 T ype the corre ct value for the drive capacity reserve (percentage), then press E NTER . Th e Sub-Array Selection screen opens. The controller displays the number of available sub-arrays you can choose from. In this example, the first one is a single sub-array that prov ides nine data drives and one parit[...]

34 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 11 Sel ect th e number of sub -array s requ ired, t hen pre ss E NTER . Th e Initiali ze/T rust Arrays screen open s. 12 Sele ct Initialize Arra y , then press E NTER . The Save Configuration screen opens. For details on trusting arrays, refer to “T rusting an array” on page 61 .[...]

35 Cr eating arrays www .gate wa y .com 13 Save the confi guration to create the array . Click Ye s , then press E NTER . Y ou will see a message that t he c onfigurat io n is being saved. 14 After it has completed the process, press any key to continue. 15 Continue with sett ing up the Array Read-Ahead Cache and W riteback Cache, then go to the H [...]

36 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Configuring arra y read-ahead and writebac k cac he The following steps will guide you thro ugh configuring the read-ahead cache and writeba ck cache opt ions for each a rra y . Each array has a different set of cache settings. Read-ahead cache and writeback cache thresholds work together to a[...]

37 Configuring a rray read-a head and write back cache www .gate wa y .com T o configure the read-ahead cache: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

38 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 2 From the Configu ration Menu, select Array Con figuration , then press ENTER . The Array Conf iguration Men u ope ns. 3 From the Array Configuration Menu , select Arra y Cac he Configuration , then pre ss E NTER . The Array Cach e Configurat ion Men u open s.[...]

39 Configuring a rray read-a head and write back cache www .gate wa y .com 4 From the Array Cache Configuration Menu, select Read- Ahead Cache , then pre ss E NTER . The Select Array screen opens. 5 Press the up or down arrow keys to select an array , then press E NTER . 6 Press the up and down arrow keys to select a Read-Ahead Cache parameter to u[...]

40 Chapter 3: Cre ating Disk Arrays www .gate wa y .com The choices are Au t om a ti c , Disabled , and four pre-determined sizes. Select A utomatic (the default), and recommended setting. It lets the c ontroller determine the optimum setting. Disab led w ill turn off the read-ahead cache. Choose one of the pre-de termined sizes to optimize t he re[...]

41 Configuring a rray read-a head and write back cache www .gate wa y .com Normally , write-intensive operations wi ll benefit through higher performa nce when writeback cache is enabled on that array . Read-i ntensive operations, such as a strea ming ser ver , may no t benefit from writeback cache. The writeback cache is used to optimize the write[...]

42 Chapter 3: Cre ating Disk Arrays www .gate wa y .com T o configure the writeback cache: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

43 Configuring a rray read-a head and write back cache www .gate wa y .com 2 From the Configurati o n Menu, select Array Con fig urati on , then press E NTER . The Array Conf iguration Menu opens. 3 From the Array Configura tion menu, select Array Cac he Configuration Men u , then press E NTER . The Array Cache Configuration Menu ope ns.[...]

44 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 4 From the Array Cache Configuration Menu, select Writeb ack Cach e , then pre ss ENTER . The W riteback Parameters Select Array menu opens.[...]

45 Configuring a rray read-a head and write back cache www .gate wa y .com 5 Press the up and down arrow keys to select an array from the list to which you want to make changes, then press E NTER . The W riteba ck Cach e Parameters Menu op ens. 6 Choose a W rit eback Cach e paramete r to use for the selecte d array . Press the up and down arrow key[...]

46 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 7 Press C TRL + D to save t he ch anges. The Save Configuration screen open s. 8 Sele ct Ye s to save the configurati o n changes, then press E NTER . 9 Press any key to con tinue.[...]

47 Assign ing hot spa re drives www .gate wa y .com Assigning hot spare drives The process of configurin g fault tolerant arrays includes a ssigning drives for global or dedicated hot spa res. In the event of a drive failure, the controller will use a g lobal hot s pare to replac e the failed d rive in any array . If a dedicated spare is assigned t[...]

48 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 2 From the Co nfiguration menu, press the up or do wn ar ro w k ey s to s e le ct Hot Spar e Configuration me nu, then press E NTE R . The Hot Sp are Config uration Menu ope ns. 3 T o a dd or remove a h ot spare drive, select Add or Remove P ool and Dedicated Spare , then press E NTER . The Ad[...]

49 Assign ing hot spa re drives www .gate wa y .com 4 Press the arrow keys to highlight an available drive to use, then press S to assign that dri v e as a dedicated spa r e. Continue to press S to display the arrays from which you c a n assig n the dedicated spare. T o add a drive as a pool spare (global), press the arrow keys to highlight an avai[...]

50 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Deleting an arra y T o delete an array: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

51 Deleting a n array www .gate wa y .com 2 From the Configura tion Me nu, select Ar ra y Configuration M enu, then press E NTER . Th e Array Configuration Menu open s. 3 From the Array Configuration Menu, select Delete Array , then press E NTER . The Delete Array screen opens.[...]

52 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 4 Press the up and down a rrow keys to select the array to delete, then press E NTER . 5 T o complete the deletion, select Ye s , then press E NTER . 6 Press any key to con tinue.[...]

53 Expandi ng an array www .gate wa y .com Expanding an arra y The Expand Array option lets you expand the capacity of your existing array by adding more drives or a dding sub-arrays. Using a RAID 5 array example, adding more drives to the array lets you increase the capacity of that array . If y o u add additio nal sub-arrays it requires the exact[...]

54 Chapter 3: Cre ating Disk Arrays www .gate wa y .com Addi ng additional dri v es T o add additional drives: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

55 Expandi ng an array www .gate wa y .com 2 From the Configuration Menu, select Arra y Configuration Men u , then press E NTER . Th e Array Configuration Menu open s. 3 From the Array Config urat ion Menu, select Expand Arra y , then press E NTER . The Select Array t o Expand Menu opens.[...]

56 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 4 Press the up and down arro w keys to select an array to expand, then press E NTER . Th e Ex pansi on menu opens. 5 From the Exp ansion menu, select Add a Number of Drives to the Arra y , then pre ss E NTER . The Expand Array Drive Selection screen opens.[...]

57 Expandi ng an array www .gate wa y .com 6 Press the up and down arrow keys to select a drive, then press X to mark that drive for exp ansion. Continue to select additional drives if necessary , otherwise press C TRL + D to continue. Y ou can ca ncel your selectio n by highlighting the drive a nd pressing R , or remove all selected drives and sta[...]

58 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 2 From the Configurati on menu, select Array Configuratio n Menu , then p re ss E NTER . Th e Array Configuration Menu open s. 3 From the Array Co nfiguration Menu, sele ct Expand Array , then press E NTER . The Select Array t o Expand Menu opens.[...]

59 Expandi ng an array www .gate wa y .com 4 Press the up and down arro w keys to select an array to expand, then press E NTER . Th e Ex pansi on Me nu op ens. 5 Press the up and down arrow keys to select Add a Number of Sub-Arrays to the Current Arra y , then press E NTER . The Expand Array Drive Selection screen opens.[...]

60 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 6 Press the up and down arrow keys to select a drive, then press X to mark that drive for exp ansion. Continue to select additional drives if necessary , otherwise press C TRL + D to continue. Y ou can ca ncel your selectio n by highlighting t he drive and pressing R , or remove all selected d[...]

61 Tr usting an arr ay www .gate wa y .com T rusting an arra y When you create a RAID 5 or 50 array , you have the option to trust the array . This option s ho uld only be used in environments where you ful ly und e rstand the consequences of the func tion. T rust array opti on is provided to allow immedi ate access to an array for testing applicat[...]

62 Chapter 3: Cre ating Disk Arrays www .gate wa y .com 3 Y ou are prompted to save the co nfiguration. Select Ye s t o s a v e t h e configuration, t hen press E NTER . 4 After the process has completed, press any key to continue.[...]

4 63 Logical Drives This cha pter pro vid es inf orm atio n on crea tin g logi cal drives. Read this chapter to learn how to: ■ Configure a logical drive ■ Access the LUN conf iguration menu ■ View unassigned free space ■ Create a logical drive[...]

64 Chapte r 4: Logical D rives www .gate wa y .com Over vie w A Log ical Drive is defined as a region o r combination of r egions of unused space on the array(s) which makes the logical drives available to the host operating systems as a disk. Y ou can create up to 512 logica l dri v es. After an array has been created, this region is first marked [...]

65 Over vie w www .gate wa y .com Mapped Logica l Driv e Numb er Each logic al drive i s presented to the host syste m with a unique LU N. In certain cases (s uch as after de leting another logical driv e) it ma y be desir abl e to change the number of the logic al drive . This c an be done a t any ti me, bearing in min d that an y attached hos t s[...]

66 Chapte r 4: Logical D rives www .gate wa y .com Accessing the LUN configuration menu T o access the LUN configuration menu: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

67 Acces sing the LUN co nfigurati on menu www .gate wa y .com 2 From the Configuration Menu, sel ect LUN Configuration , then press E NTER . The LUN Configu ration Menu opens. The LUN Config uration Menu has two menu options: one for managing lo gical drives, which includes utilities for view ing, c reating, deleting, and managing LUNs, and the ot[...]

68 Chapte r 4: Logical D rives www .gate wa y .com Vie wing unassigned free space Prior to creating a logical drive, you may w ant to revi ew the availab le unas signe d free space. This will help you to identify th e unused regions or segmen ts for use during the creation of your logi cal driv es. Normally with a first time configuration this is n[...]

69 Viewing un assigne d free space www .gate wa y .com 2 From the Configu ration Menu, select LUN Configuration , then press E NTER . The LUN Confi guration Menu opens. 3 From the LUN Configuration Menu, select LUN Manageme nt , then press E NTER . Th e LUN Management Menu opens.[...]

70 Chapte r 4: Logical D rives www .gate wa y .com 4 From the LUN Management Men u, sel ect View Un assigned Free Spa ce , th en pre ss E NTER . The Unassign ed Free Space scr een opens. 5 Review the free space regions and note them for later use.[...]

71 Creatin g a logica l drive www .gate wa y .com Creating a logical drive T o complete the process of configuring your arrays, you will need to create one or more logica l drives. Creating a logical drive from the available free sp ace regions presents the logical driv e to the host operating system. T o create a logical dr ive: 1 From the Main Me[...]

72 Chapte r 4: Logical D rives www .gate wa y .com 2 From the Configuration menu, select LUN Configura tion , th en pres s E NTER . Th e LUN Confi guration Menu open s. 3 From the LUN Configuration menu, select LUN Management , t he n press E NTER . The LUN Man agement Menu open s.[...]

73 Creatin g a logica l drive www .gate wa y .com 4 From the LUN Management me nu, se lect Crea te Logi cal Dr ive , then pres s E NTER . Th e S e l e c t U n u s e d R e g i o n M e n u op ens. 5 Press the up and down arrow keys to select a region you want to use for the logical drive, then press E NTER . The Numb er of Logi cal Dr ives to create [...]

74 Chapte r 4: Logical D rives www .gate wa y .com 6 Press the up and down arrow keys to change the desired number of Host LUNs to create, then press E NTER . The LUN S ize scr een opens. 7 Press the up and dow n arrow keys to change the desired size of the LUN, then pre ss E NTER . The value displaye d is the default size of the logical drive that[...]

75 Creatin g a logica l drive www .gate wa y .com Expandi ng a logi cal drive T o expand a LUN: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

76 Chapte r 4: Logical D rives www .gate wa y .com 2 From the Configuration menu, select LUN Configura tion , th en pres s E NTER . Th e LUN Confi guration Menu open s. 3 From the LUN Configuration Menu, select LUN Management , then press E NTER . The LUN Man agement Menu open s.[...]

77 Creatin g a logica l drive www .gate wa y .com 4 From the LUN Management menu, se lect Expand Logical Dri ve , then press E NTER . Th e Select Logical D rive screen op ens. 5 Select a logical drive that you w ant t o expa nd, then press E NTER . The Unused Reg ion s For Expa nsio n screen op ens.[...]

78 Chapte r 4: Logical D rives www .gate wa y .com 6 Select the unused region into which you want to expand the logical drive, then press E NTER . The Ex pansi on Si ze screen opens. 7 Press the up and d own arrow keys to change the value to the desired size, then press E NTER . 8 When you are prompted to save the configuration, select Ye s , then [...]

79 Creatin g a logica l drive www .gate wa y .com Setting logical d rive a va ilability This option will make a l ogical drive a vailable to a c ontroller port and determines whether that logical drive is seen by all or a specific host system attached to th at controller port. T o set logi cal drive availabilit y: 1 From the Main Menu, select Confi[...]

80 Chapte r 4: Logical D rives www .gate wa y .com 2 From the Configura tion menu, select LUN Configura tion , then pres s E NTER . The LUN Confi guration Menu opens. 3 From the LUN C onfiguration menu, s e lect LUN M anagement , th en p res s E NTER . Th e LUN Management Menu opens.[...]

81 Creatin g a logica l drive www .gate wa y .com 4 From the LUN Management Menu, select Set Host LUN A vailability , then pre ss E NTER . The Select Logical Drive fo r A vailab ility scre en opens. 5 From the Select Logical Drive for A vailability screen, select a logical drive that you want to map t o another LUN number , then press E NTER . The [...]

82 Chapte r 4: Logical D rives www .gate wa y .com 8 Press C TRL + D to save the changes. 9 When prompted to sa ve the configuration, select Ye s , t hen press E NTER . 10 Press any key to return to the Main Menu. Deleteing a logical drive This process will remove an exist ing logical drive. T o delete a logical drive: 1 From the Main Menu, select [...]

83 Creatin g a logica l drive www .gate wa y .com 2 From the Configura tion menu, select LUN Configura tion , then pres s E NTER . The LUN Confi guration Menu opens. 3 From the LUN Configura tion menu, select LUN Management , the n pre ss E NTER . Th e LUN Management Menu opens.[...]

84 Chapte r 4: Logical D rives www .gate wa y .com 4 From the LUN Management Menu, select Delete Logical Drive , then press E NTER . Th e Select a Logical Drive to Delete screen opens. 5 From the Select a Logical Drive to Dele te screen, select the logica l drive to delete, then press E NTER . 6 When you are prompted to save the configuration, sele[...]

85 Creatin g a logica l drive www .gate wa y .com Modifying a mapped LUN This option lets yo u change the assigned LUN number after the logical drive has previously been made available. T o modify a LUN number: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

86 Chapte r 4: Logical D rives www .gate wa y .com 2 From the Configura tion menu, select LUN Configura tion , then pres s E NTER . The LUN Confi guration Menu opens. 3 From the LUN C onfiguration menu, s e lect LUN M anagement , th en p res s E NTER . Th e LUN Management Menu opens.[...]

87 Creatin g a logica l drive www .gate wa y .com 4 From the LUN Mana gement menu, select M odify Mapped LUN Numbe r , then pre ss E NTER . The Select a Logical D r iv e to Modify Map ped Number screen opens. 5 From the Select a Logic al Drive to Modify Mapped Numb er screen, select the logical drive whose number you intend to change, then p ress E[...]

88 Chapte r 4: Logical D rives www .gate wa y .com 6 Press the up and down arrow keys to change the logical drive number to the desired number , then press E NTER . 7 When you are prompted to save the configuration, select Ye s , then press E NTER . 8 Press any key to return to the Main Menu.[...]

5 89 SAN LUN Mapping This chapter provides informati o n on SAN LUN ma pping. Read thi s chapter to le arn how to: ■ Access the SAN LUN mapping configuration menu ■ View SAN LUN mappings ■ Create a SAN LUN map ping ■ Del ete a S AN LUN mappin g ■ Modi fy a S AN LU N mappi ng ■ V iew connecte d hosts[...]

90 Chapter 5: SAN LUN Mapping www .gate wa y .com Over vie w When attaching mu ltiple host systems in a SAN environment, it may be necessary to more precisely control which hosts ha ve access t o which logical dr ives. In addition to controlling logical drive availability on a RAID controller on a port-by-port basis, it is also possible to further [...]

91 Access ing the SA N LUN mapping configur ation menu www .gate wa y .com Accessing the SAN LUN mapping configuration men u T o access the SA N LUN mapping configuration m enu: 1 From the Main Menu, select the Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

92 Chapter 5: SAN LUN Mapping www .gate wa y .com 2 From the Configu ration Menu, select LUN Configuration , then p ress E NTER . The LUN Confi guration Menu open s. 3 From the LUN Config ur ation menu, sele ct SAN LUN Mapping , then press E NTER . The SAN LUN Mapping screen open s. The SAN LUN Mapping Configura tion Menu provides the options for v[...]

93 Viewin g SAN LU N mappings www .gate wa y .com Vie wing SAN LUN mappings T o view existing SAN LUN mapping s, choose this option. T o view SAN LUN mappings: 1 From the Main Menu, select the Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

94 Chapter 5: SAN LUN Mapping www .gate wa y .com 2 From the Configuration menu, select LUN Configura tion , th en pres s E NTER . Th e LUN Confi guration Menu open s. 3 From the LUN Config ur ation menu, sele ct SAN LUN Mapping , then press E NTER . The SAN LUN Mapping screen open s.[...]

95 Viewin g SAN LU N mappings www .gate wa y .com 4 From the SAN LUN Mapping Menu, select View SAN LUN Mapping s , then p ress E NTER . The View SAN LUN Mapping screen op ens. In the example abo ve, there are two mappin gs created. They have a n identical node name but dif ferent port names, indicating they are both in the same host system. The p o[...]

96 Chapter 5: SAN LUN Mapping www .gate wa y .com Creating a SAN LUN mapping T o create a SAN LUN mapping: 1 From the Main Menu, select the Configuration Men u , then p ress E NTER . The Configurati on Menu opens.[...]

97 Creating a SA N LUN mapping www .gate wa y .com 2 From the Configuration menu, select LUN Configuration , then p ress E NTER . The LUN Confi guration Menu open s. 3 From the LUN Configur ation me nu, select SAN LUN Ma pping , then press E NTER . The SAN LUN Mapping screen open s.[...]

98 Chapter 5: SAN LUN Mapping www .gate wa y .com 4 From the SAN LUN M apping Menu, select Create SAN LUN Mapping , then press E NTER . Th e SAN LUN Mapping Name screen opens. 5 T y p e a u n i q u e n a m e f o r t h i s m a p p i n g ( a s m a n y a s 3 2 c h a r a c t e r s ) , t h e n p r e s s E NTER . Th e SAN LUN Mapping Config uration scre [...]

99 Creating a SA N LUN mapping www .gate wa y .com If a LUN is already part of another mapping and is defined as Exclusive, it will not be available here for select io n. If the logi cal driv e was mapped as Sha re or Shared Read Only , it will be available. 6 When you are prompted to save the configuration, select Ye s , then press E NTER . 7 Pres[...]

100 Chapter 5: SAN LUN Mapping www .gate wa y .com Deleting a SAN LUN mapping T o delete a SAN LUN mapping: 1 From the Main Menu, select the Configuration Men u , then p ress E NTER . The Configurati on Menu opens.[...]

101 Deleting a SAN LUN mapping www .gate wa y .com 2 From the Configu ration Menu, select LUN Configuration , then press E NTER . The LUN Confi guration Menu opens. 3 From the LUN Configuration Menu, select SAN LUN Mapping , then press E NTER . Th e SAN LUN Mapping scr een opens.[...]

102 Chapter 5: SAN LUN Mapping www .gate wa y .com 4 From the SAN LU N Mapping menu, select Delete SAN LU N Mappin g , then pre ss E NTER . The Dele te SAN LUN Mapping screen opens. 5 Select a SAN LUN Mapp ing to be deleted, then press E NTER . 6 When you are prompted to save the configuration, select Ye s , then press E NTER . 7 Press any key to r[...]

103 Modifyi ng SAN LUN M apping www .gate wa y .com Modifying SA N LUN Mapping I t i s s o m e t i m e s n e c e s s a r y t o m o d i f y s o m e o r a l l o f t h e p a r a m e t e r s o f a S A N L U N Mapping. Y ou can change the Mapping Name, Port Name, and the RAID controller port availabi lity access of the mapping. This may be necessary if,[...]

104 Chapter 5: SAN LUN Mapping www .gate wa y .com 2 From the Configuration menu, select LUN Configura tion , th en pres s E NTER . Th e LUN Confi guration Menu open s. 3 From the LUN Config ur ation menu, sele ct SAN LUN Mapping , then press E NTER . The SAN LUN Mapping screen open s.[...]

105 Modifyi ng SAN LUN M apping www .gate wa y .com 4 From the SAN LUN Mapping menu, select Modify SAN LUN Mapping , then pre ss E NTER . The Modify SAN LUN Mapping screen opens. 5 Press the up and down arrow keys to select a SAN LU N Mapping to be modified, then press E NTER . The Modify SAN LUN Mapping Name screen opens.[...]

106 Chapter 5: SAN LUN Mapping www .gate wa y .com 6 Enter a new SAN LUN mapping n ame, then pre ss E NTER . The Modify SAN LUN Mapping Co nfiguration screen opens. 7 Change the para meter s for the SAN LUN Mapping. Set the parameters for the SAN LUN Mapping by using the E NTE R key to toggle the type of access desired (shared, shared read on ly , [...]

107 Modifyi ng SAN LUN M apping www .gate wa y .com 9 When you are prompted to save the configuration, select Ye s , then press E NTER . 10 Press any key to return to the Main Menu.[...]

108 Chapter 5: SAN LUN Mapping www .gate wa y .com Vie wing connected hosts Choose this option t o view a ll conn ected host HBA ports. T o view connected hosts: 1 From the Main Menu, select the Configuration M enu , then press E NTER . The Configurati on Menu opens.[...]

109 Viewing c onnected hos ts www .gate wa y .com 2 From the Configura tion menu, select LUN Configura tion , then pres s E NTER . The LUN Confi guration Menu opens. 3 From the LUN Configura tion menu, select SAN LUN Mapping , then press E NTER . Th e SAN LUN Mapping scr een opens.[...]

110 Chapter 5: SAN LUN Mapping www .gate wa y .com 4 From the SAN LUN Map ping Menu, select Vie w Connected Host , then press E NTER . Th e View Logg ed-in Ho sts sc reen opens. The following table provides an explana tion of each of the fields shown in the display . Field Description No . Host n umber assign ed by the controller . This is used whe[...]

6 111 Ad v anced Configuration and Mana g ement Thi s cha pte r pro vid es in for mat ion on adv anc ed config uration an d managemen t. Read th is chapte r to learn how to: ■ Set rebuild parameters ■ Configure hot sp ares ■ Configure hardware settings ■ View controller in fo rmation ■ Clear the configuration[...]

112 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Setting reb uild parameter s The Rebuild Parameters m e nu option lets you enable or disable automatic rebuild operations, set the rebuild p riority , and configure the controller for the auto hot sp are feature. Enab ling/disab ling auto reb uild Whenever a hot spare is cr[...]

113 Sett ing rebui ld param eters www .gate wa y .com 2 From the Configurat io n menu, select Reb uild Parameter s , then press E NTER . The Rebui ld Parameters menu opens. 3 From the Rebuild Parameters menu, select the A uto Rebuild and Set Priority option, then pre ss E NTER . The Auto Rebuild and Se t Priority menu op ens. From the Auto Rebuild [...]

114 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 5 Press C TRL + D to save the changes a nd continue. 6 When you are pro mpted to confirm the save, choose Ye s , then press E NTER . 7 Press any key to return to the Main Menu. Important The v alues range from 10% through 9 0%. The high er the val ue the more proc essor tim[...]

115 Sett ing rebui ld param eters www .gate wa y .com Configuring auto hot spare This feature lets y o u config ure the controller to automatically start a rebuild operation when a rep lacement drive is inserted into the drive slot of the removed failed drive member . This feature only applies when a dedicated or pool spare has not been assigned. T[...]

116 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 2 From the Configurati o n Menu, select Rebuil d Parameter s , then press E NTER . The Rebuild P arameters Menu opens. 3 From the Rebuild Parameters Menu, select the A uto Hot Spare option, then press E NTER . Th e Aut o Hot S pare Me nu ope ns.[...]

117 Sett ing rebui ld param eters www .gate wa y .com 4 Press E NTER to toggle between Enable or Disable . Enabling this feature will automaticall y start a rebuild operation when a replacement driv e is inserted into the drive slot of the rem oved failed drive member . 5 Press C TRL + D to save the changes or press E SC to cancel and return to the[...]

118 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Configuring hot spares The process of configurin g fault tolerant arrays includes a ssigning drives as global or dedicated hot s pare s. In the ev e nt of a driv e failure that is a member of a fault tolerant array , the controller will use an as signed global hot spa re to[...]

119 Configur ing hot sp ares www .gate wa y .com 2 From the Configurat ion menu, select Hot Spare Configuration , t hen p ress E NTER . Th e Hot Spare C onfiguration menu ope ns.[...]

120 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 3 Sele ct View Hot Spare Dri ve Configuration, then press E NTER . A list of hot spare drives opens.[...]

121 Configur ing hot sp ares www .gate wa y .com Addi ng or removin g hot spare drives T o add or remove hot spare drives: 1 From the Main Menu select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

122 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 2 From the Configu ration menu, select Hot Spare Configur ation , then press E NTER . The Hot Spar e Configurati on menu opens. 3 Sele ct Add or Re move Glo bal and Dedica ted Spare, then pr ess E NTER . Th e Add or Remove Global and Dedicated Spares screen op ens.[...]

123 Configur ing hot sp ares www .gate wa y .com 4 Pre ss th e ar row k eys to se lect an availa ble drive to use: T o add a dedicated spare, pres s S to assign that drive as a dedicated spare. Then continue to press S , which displays the arrays from which you can assig n the dedicated spare. T o add a drive as a glob al spare, pr ess the arrow ke[...]

124 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Configuring the har d ware The hardware configuration menu provides the options to set the Controller LUN, configure the controller port co nnection options, set the controller port data rat e, configure the controller’ s RS-232 p ort BAUD rate, an d set t he Packetized D[...]

125 Config uring the hardware www .gate wa y .com T o configure the controller LUN: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens. 2 From the Configura tion Menu, select Har dware Configuration , then press ENTER . The Har dware Configurati on Menu opens.[...]

126 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 3 From the H ardware Configuration Menu, selec t Controlle r LUN , then press E NTER . Th e Set Controller LUN screen open s. 4 Press E NTER to select the method of Co ntroller LUN assignment. 5 Press C TRL + D to save the changes a nd continue. 6 When you a re prom pted to[...]

127 Config uring the hardware www .gate wa y .com Setting the contr oller por t ID The Port ID settings provide you the option to set the SCSI ID for the controller port. Y ou can use IDs 0-15 . T o set the ID for controller ports: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

128 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 2 From the Configuratio n Menu, select Hardware Confi guration , then press ENTER . The Hard ware Conf igu rati on M enu ope ns. 3 From the Hardware Configuration Menu, select P or t ID Settings , then press E NTER . Th e Port ID Menu ope ns. 4 Press ENTER to toggle between[...]

129 Config uring the hardware www .gate wa y .com The Disabled setting allows for soft a ddressing. The default IDs for the controller ports are Port 0 ID 4 and Port 1 ID 5. 5 Press C TRL + D to save the changes a nd continue. 6 When you a re prom pted to con firm the save, choose Ye s , then press E NTER . 7 Press any key to return to the Main Men[...]

130 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Contr oller port data rate This option lets you set the data transfer rate of the controller ports. The settings include 320 MB , 160 MB and 80 MB. T o set the controller port data rate: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati [...]

131 Config uring the hardware www .gate wa y .com 2 From the Configuratio n Menu, select Hardware Confi guration , then press ENTER . The Hard ware Conf igu rati on M enu ope ns. 3 From the Hardware C onfiguration Menu, select Contr oller Port Data Rate , then press E NTER . The Con trol Po rt D ata Ra te Me nu op ens.[...]

132 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 4 Use the up an d down arrow key s to choose a controller p ort, then press E NTER . The Host Po rt D ata Ra te Op tions screen opens. 5 Use the up and down arrow keys to select 320MB/s ec , 160MB/se c , or 80 MB /sec , then press E NTER . 6 When you are prompted to confirm[...]

133 Config uring the hardware www .gate wa y .com Setting the RS-232 configur ation The RS -232 Settings optio n provides you with the option to set the BAUD rate for the controller’ s RS-232 port. T o change RS-232 settings: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

134 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com 2 From the Configuratio n Menu, select Hardware Confi guration , then press ENTER . The Hard ware Conf igu rati on M enu ope ns. 3 From the Ha rd ware Co nfiguration Menu, select RS-232 Settings , the n press E NTER . Th e Baud Rate Se lection Menu opens.[...]

135 Config uring the hardware www .gate wa y .com 4 Press the up and down arrow keys to select a BAUD rate for the controller RS-232 port (the default and recomme nded setting is 115,200), then press E NTER . 5 When you are prompted to save the configuration, select Ye s , then press E NTER . 6 Press any key to return to the Main Menu.[...]

136 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com P ac ketiz ed data transfers/QAS Packetized protocol is provided for transferring commands, status, and data. The system sends this i nformation in packets that are protected with a CRC. These packets are a lso sent synchronously t o reduce the protocol ov erhead. This opti[...]

137 Config uring the hardware www .gate wa y .com 2 Press the up or down arrow keys to select Pack etized Dat a T ransfers Usi ng QAS, then press E NTER . The Packetized SCSI/QAS screen opens. 3 Press t h e u p o r d o w n a r r o w k e y s t o s e l e c t Enable d or Disabled . 4 Press C TRL + D to save the changes a nd continue. 5 When you a re p[...]

138 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Vie wing contr oller inf ormation This option provides the abil ity to view detailed information on the SA T A RAID Controller , such as: Contro ller WWN, Configuration WWN and Name, Firmware, run-t ime data an d onboard tempera ture and voltage information. T o view contro[...]

139 Viewi ng contro ller infor mation www .gate wa y .com 2 From the Co ntroller Information Menu, press the up and d own arrow keys to select a C ontrol ler , then press E NTER . The Contr olle r Info rm atio n screen opens. 3 Use U and D to scroll up a nd down thro ug h the controller information displayed. If you want to capture the information,[...]

140 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com Clearing the configuration T o clear the configuration: 1 From the Main Menu, select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

141 Clearing th e configur ation www .gate wa y .com 2 From the Configuratio n Menu, select Clear Configur ation , then pre ss E NTER . The Cle ar Configuration W arning op ens. 3 Press Y to continue and clear all configuration information or N to cancel this operation 4 Press E SC to return to the Main Menu. Caution There is no fur ther w ar ning,[...]

142 Chapter 6: Advanced Con figurati on and Manag ement www .gate wa y .com[...]

7 143 Ad ditional Configuration This chapter prov ides information on additi onal configuration. R ead this chapter to learn how to: ■ Modify config uration names ■ Modify config uration WWNs ■ Set single controller mode ■ V erify background m edia ■ Include enclosure eve nts in the event logs[...]

144 Chapter 7: Additional Co nfiguration www .gate wa y .com Modifying the configuration name T o modify the configuration name: 1 From the Main Menu select Configuration Men u , then press E NTER . The Configurati on Menu opens.[...]

145 Modifyin g the config uration n ame www .gate wa y .com 2 From the Configurat ion menu, select Additional Configu ration , then press E NTER . Th e Addition al Configuration Menu opens. 3 Press the up and down arrow keys to select Modify Configuration Name , then pre ss E NTER . The Confi guration Name screen open s.[...]

146 Chapter 7: Additional Co nfiguration www .gate wa y .com 4 Press B ACKSPACE to delete the existing Conf iguration Name displayed, type a new name for your controller’ s Confi guration (as many as 64 A SCII characters), then press E NTER to con tin ue. 5 When you are prompted to save the configuration, select Ye s , then press E NTER . 6 Press[...]

147 Veri fying back ground media www .gate wa y .com V erifying bac kgr ound media This option, when ena bled, will automatically verify the m e dia of all drives in the background. If a media error is detect ed, the controller can automatically re-write the data, provi d ing tha t the array is in a fault tolerant mod e. T o verify background media[...]

148 Chapter 7: Additional Co nfiguration www .gate wa y .com 2 From the Configuration menu, select Addition al Configuration , then press E NTER . The Addit ional Configu ration Menu opens. 3 From the Additional C onfiguration Menu, select Backgr ound V erification , th en pre ss E NTER . The Backgro und V erificatio n screen opens. 4 Press E NTER [...]

149 Veri fying back ground media www .gate wa y .com 6 When you are prompted to save the configurat ion, select Ye s , then press E NTER . 7 Press any key to return to the Main Menu.[...]

150 Chapter 7: Additional Co nfiguration www .gate wa y .com Inc luding enc losure e vents in e vent logs This option lets you enable or disable whether enclosure ev ents are included in the Event logs. E nclosure e vents are thos e which perta in to the enclosure components such as cooling fan status , power supply status, and I/O card status. T o[...]

151 Includi ng enclosur e events in e vent logs www .gate wa y .com 2 From the Configurat ion menu, select Additional Configu ration , then press E NTER . Th e Addition al Configuration Menu opens. 3 From the Addition al Configuration Menu , select Log Enc losure Events , the n pre ss E NTER . The Enclosure Events screen open s. 4 Press E NTER to t[...]

152 Chapter 7: Additional Co nfiguration www .gate wa y .com 6 When you are prompted to save the configuration, select Ye s , then press E NTER . 7 Press any key to return to the Main Menu.[...]

8 153 Statistics This chapter provides informat ion on statist ics. Read this chapter to learn how to: ■ Vi ew a ll st a ti s ti c s ■ View access statistic s ■ View readahead statistics ■ View comma nd cluster statistics ■ View misc ellaneous statistics ■ View access statistics on ea ch l ogical drive ■ Clear ac cess stati stics on e[...]

154 Chap ter 8 : Stati stic s www .gate wa y .com Over vie w The RAID controller monitors all inco ming co mmands and calculates v arious statistics. These statist ics are then reported to the controller’ s serial interface, whe re y ou can vie w thi s da ta. The st ati sti cs mo nito red i ncl ude: Com man d Count, Comma nd Alignment, Command Si[...]

155 Viewing al l statis tics www .gate wa y .com Vie wing all statistics T o view al l statistic s: 1 From the Main Menu, select Statistics Men u , then press E NTER . The Select Contro ller Statistics Menu opens.[...]

156 Chap ter 8 : Stati stic s www .gate wa y .com 2 From the Select Controller S tatistics Menu, select the controller on which you want to view the statistics, then press E NTER . The Statist ics T ypes screen opens. 3 From the Stati stics T ypes screen, select View Al l Stati stics , then p ress E NTER . The All Sta tistics scre en opens.[...]

157 Viewing al l statis tics www .gate wa y .com 4 Press U to page up, D to page do wn, and P to dump the information to a file. The balan ce of this ch apter covers ea ch statisti cs group se lected, with an exp lanati on of each it em. Dumping data to a text file The dump function ena bles you to write the data to a text file. T o dump data to a [...]

158 Chap ter 8 : Stati stic s www .gate wa y .com Vie wing access statistics The statistics groups can be viewed all together or individually , as well as on a LUN ( l o g i c a l d r i v e ) o r P o r t b a s i s . The View Access Statistics screen is accessed by going to the Statistics T ypes menu (see “Viewing all statistics” on page 155 ), [...]

159 View ing access statisti cs www .gate wa y .com T otal Read Comman ds Sinc e Reset This is a count of the to tal number of read accesse s that have occurre d since the s tatis tics were rese t or th e controll er was la st pow ered on. T otal Read T ransf er Since Reset This is a co unt of the total num ber of 512-b yte blo cks that ha ve be en[...]

160 Chap ter 8 : Stati stic s www .gate wa y .com Access Size This is the percentage of commands of t he size specifi ed. On o ccasions, an applic ation ma y sp ecify a particular access size , but the operatin g system ca n reduce th is. This c an lead to perf ormance prob lems. F or e xample, on Window s NT , Windo ws 2000 , and Window s 2003 the[...]

161 Viewing r eadahead st atistics www .gate wa y .com Vie wing readahead statistics If se quent ial read comman ds are sent to t he controller , it assumes that the commands that follow can al so be sequential. It can then go and perform a read of the data before the host requ ests it. This im proves performance, particularly for smaller reads. Th[...]

162 Chap ter 8 : Stati stic s www .gate wa y .com Sequ enti al Comma nd Interval In determining wh ether to perf orm a readahead or n ot, the contro ller will se arch bac k in the command queue whene v er it receiv es a ne w read command th at is not satisfi ed by an e xis ting readahead cache b uff er . In a multi thread ed operating sys tem, comm[...]

163 Viewing command c luster stat istics www .gate wa y .com Vie wing command c luster statistics T o increase performance, the controlle r can cluster sequential write commands together to create a larger write comman d. This results in less commands being sent to the hard drives. Additionally , if sufficient data is c lustered by the controller ,[...]

164 Chap ter 8 : Stati stic s www .gate wa y .com Statistic Descript ion Write Cluster Ra te This is the percentage of t he number of write commands that are part of a clust er versu s the total numb er of write command s that ha ve b een issu ed. This giv es an indicati on of the seque ntial nature of t he data acces s pattern from the hos t and o[...]

165 View ing misc ellaneou s statis tics www .gate wa y .com Vie wing miscellaneous statistics T o a i d i n t u n i n g p e r f o r m a n c e , s o m e a d d i t i o n a l s t a t i s t i c s h a v e b e e n i n c l u d e d for development use und er the Vie w Miscellaneous Sta tistics selection. The V iew Miscellaneous Statistics s c r e e n i s [...]

166 Chap ter 8 : Stati stic s www .gate wa y .com Vie wing access statistics on eac h logical drive T o view access s tatistics for each logical drive. 1 From the Main Menu, select Statistics Men u , then press E NTER . The Select Contro ller Statistics Menu opens.[...]

167 View ing acce ss statisti cs on each l ogical dr ive www .gate wa y .com 2 From the Select Controller S tatistics Menu, select the controller on which you want to view the statistics, then press E NTER . The Statist ics T ypes screen opens. 3 From the Sta tistics T ypes screen, select Vi ew Access Stat istics on Each L UN , then press E NTER . [...]

168 Chap ter 8 : Stati stic s www .gate wa y .com 4 From the Select LUN for Host LUN Statistics screen, select a LUN on which to view statistics, then press E NTER . The Select a Port Access to th e Host LUN screen opens.[...]

169 View ing acce ss statisti cs on each l ogical dr ive www .gate wa y .com 5 Select a Cont r oll e r Port on which to vi ew Statistics (eit her Port 1, Port 2 or Both Ports), then press E NTER . Th e View Access Statistics o n Each LUN screen opens.[...]

170 Chap ter 8 : Stati stic s www .gate wa y .com Clearing access statistics on each logical drive (LUN) T o clear the access statistics for each logical drive: 1 Access the View Access Statistics o n Each LUN screen (s ee “Viewing access statistics on each logical drive” on page 166 ). 2 Sele ct a log ical d riv e on w hich to cl ear s tatis t[...]

171 Cleari ng all statis tics www .gate wa y .com 2 From the Select Controller S tatistics Menu, select the controller on which you want to clear th e statistics, then press E NTER . The Statistics T ypes screen opens. 3 From the Statistics Ty pes screen, selec t Clear Statist ics , then press E NTER . The Clear St atistics screen opens. 4 Sele ct [...]

172 Chap ter 8 : Stati stic s www .gate wa y .com[...]

9 173 Event Logs This chapter provides information on event logs. Read this chapter to learn how to: ■ Access event logs ■ Understand controller events ■ Un dersta nd dri ve even ts ■ Understand controller dr ive po rt (ho st) eve nts ■ Understand enclosure events ■ Understand failed drives ■ Clear event logs[...]

174 Chapter 9: Event Logs www .gate wa y .com Accessing e vent logs The RAID controller has a compre hensive, no n-volatile ev e nt log th at can be used for monitoring con troller events and error co nditions. The following event types are logged: Drive Failures and Errors, Controller Failures a nd Errors, (SES) Enclosure, T emperature and V oltag[...]

175 Access ing ev ent logs www .gate wa y .com 2 From the Sele ct Cont roll er Ev ent Log Menu, select the controller for which you want to view the events, then press E NTER . The Event L og T ypes menu opens.[...]

176 Chapter 9: Event Logs www .gate wa y .com 3 From the Event Log T ypes men u, select a specific set of events you want to view , then press E NTER . For example, if you selec t Vie w All Events , the Vi ew All Events screen opens. The balance of this chapter covers each Event Log group a vailable, with an exp lanati on of each it em. The events [...]

177 Access ing ev ent logs www .gate wa y .com View Last 50 Ev ents This opt ion lists the l ast 50 e vents . View Last Hour/24 H our Eve nts This li sts the e v ents that occurred in the specif ied time . View Env ironmental Events This lis ts ev ents s uch as temper ature warnings , vo ltage le vel e rrors, battery errors, e tc. View F aile d Dri[...]

178 Chapter 9: Event Logs www .gate wa y .com Contr oller e vents Following is a brief description of events that relate to the c ontroller and configuration. Control ler Event Messages Description Cau se Act ion Arra y xx Cache D isabl ed [Reas ons] The cont roller has dis abled the writeba ck cache f or the indica ted reas ons, a s fo l l ow s : [...]

179 Con troll er ev ents www .gate wa y .com Battery Charging This i ndicates tha t the onboard ca che bac kup battery is cha rging. Battery charging star ted. No action necess ar y . Cached Data Lost xxx Entries, yyy MB If the contro ller is po wered off with writeback c ache still present, it is necessa r y to flus h this data w hen power is rest[...]

180 Chapter 9: Event Logs www .gate wa y .com Controlle r x F ail ed/Remo ved The speci fied controller has been rem ov ed, or ha s fai led. Messa ge is genera ted b y the partner controller . F ail ure or r emoval of one co ntroller (partner) in an Activ e-Activ e configu ration. Replace th e controll er . Controlle r x Timeout The spe cified cont[...]

181 Con troll er ev ents www .gate wa y .com Control ler Shutdown The controlle r has been shutdo wn either lo cally or remotely . User ini tiated a control ler shutdo wn. The c ontr oller tempera ture was ex ceeded a nd the control ler shut itself do wn. No action necess ar y . Chec k f or a f ailed f a n, re place as neede d. Ch eck f o r bl ock [...]

182 Chapter 9: Event Logs www .gate wa y .com F ata l SDRAM ECC The contro ller has det ected unrecov erab le ECC errors on th e SDRA M, ei ther a mult iple-bit error or uncor recta ble single -bit error . F ault SDRAM or dama ged internal bus. Replace th e controll er . Contact T echni cal S uppo r t. F ata l Copr ocesso r Err or The copr ocesso r[...]

183 Con troll er ev ents www .gate wa y .com Resy nc Started A stripe synchro nization of a RAID 5 /50 set has st ar ted. This w ill be done when a controll er f ails or when pow ered off during a wr ite . A controlle r f ails or is po wered off dur ing a RAID 5/50 write oper ation. No action nece ssar y . Resy nc Comple ted A s tripe synchroniz at[...]

184 Chapter 9: Event Logs www .gate wa y .com Driv e e ve nts These events are related to the drive bus and arrays. Drive Eve nt Messages Description Cause Action Arra y xx Critic al This ind icates the sp ecified array is cr itic al. Driv e remov al or fai lu r e. Replace th e hard drive a nd reb uild the arra y . Arra y xx Expansio n Star ted Exp[...]

185 Dri ve even ts www .gate wa y .com Data Underrun WWN: xx xx xx x x xx xx P y OP: zz The con troller has de tected a data und errun from the indicat ed drive . This is caused by the co ntroller detecting a bad CRC in a frame , and us ually indic ates a link proble m, eit her wi th cab ling or an enc losure. Th e meani ng of each f ield i s as fo[...]

186 Chapter 9: Event Logs www .gate wa y .com Drive CC F ailure SN: xx xx xx xx xx xx A: yy D: zz The driv e listed has fa iled becaus e of an unreco ver able erro r. The meani ng of each f ield i s as fo l l ow s : SN: Serial Number A: Arra y number D: D rive number in arr ay T ypically be cause of a non-reco ver abl e media err or or hardw are er[...]

187 Dri ve even ts www .gate wa y .com Dr ive Rebuild Failur e SN: xx xx xx xx xx xx A: yy D: zz Reb uild has f aile d because of an u nrecov erab le error on another driv e in the arr ay . The meani ng of each field is as f ollo ws: SN: Serial Number A: Arra y number D: D rive number in arr ay T ypically be cause of a non-reco ver abl e media err [...]

188 Chapter 9: Event Logs www .gate wa y .com New Driv e Re b uild F ai lure SN: xx xx xx xx xx xx A: yy D: zz Reb uild has f aile d because of an u nrecov erab le error on the ne w drive . The meani ng of each fi eld is as f ollo ws: SN: Serial Number A: Arra y number D: D rive number in arr ay T ypically be cause of a non-reco ver abl e media err[...]

189 Dri ve even ts www .gate wa y .com SN: xx xx xx xx xx xx ID:aaa FW Download Sta r t Re v: yyyy The driv e listed has star ted a firmware u pgrade to t he indicat ed re vision. The meani ng of each f ield i s as fo l l ow s : SN: Serial Number ID: D rive T arg et ID Re v: New firm wa re version A firmware upgr ade has started. No action nece ssa[...]

190 Chapter 9: Event Logs www .gate wa y .com Contr oller drive por t (host) e vents These events are related to the host si de Controller Port. Contro ller Port Loop Ev ent Messages Description Cause Actio n C x P x Detected P ow er-on/Reset at ID: yyy LUN: zzz The s pecif ied h ost ha s access ed a logical driv e for the first tim e, or f or the [...]

191 Controll er drive port (host ) events www .gate wa y .com CC to Host ID: xxx LUN : yyy P z OP: aa SN: bb EXT: cc QL: dd This ind icates that an unreco ver able driv e error has occ urred f or a particular comma nd. This ma y be due to a driv e error i n a non f ault toler ant mode, suc h as RAID 0, or whe n the arra y is already i n a degra ded[...]

192 Chapter 9: Event Logs www .gate wa y .com Enc losure events These events are related to the SES mo nitored enclosure components. SES Event Mes sages Description C ause Action Encl. yy P ow er supply zz OK WWN: xx xx xx xx xx xx xx xx The con troller has de tected that the in dicated po wer supply is functioni ng corre ctly . Normal condi tion r[...]

193 Enclosur e events www .gate wa y .com Encl. yy Te m p . zz < aa >C W arning WWN: xx xx xx x x xx xx xx x x The con troller has de tected that the in dicated temper ature sens or has reached a warning limi t. T emperatu re sensors are reporting enclos ure temper atures ha ve reached t he threshol d of 70°C. A utomatic sy stem shut down wi[...]

194 Chapter 9: Event Logs www .gate wa y .com Encl. yy Te m p . zz < aa >C Critical WWN: xx xx xx xx xx xx xx x x The con troller has de tected that the in dicated temper ature sens or has reached a critical limit. T emperatu re sensors are repo r tin g enclos ure temper atures ha ve reached t he threshol d of 50°C. If the fa ns are set to a[...]

195 Fail ed drives www .gate wa y .com F ailed drives The controller maintains a list of fa iled drives. Drives are listed in the fo llowing format: Failed Dri ve:xx WWN: yy y y yy yy yy yy Reason C ode The reason code c an be one of the following: Reason Co des Reason Action Driv e Timeout The driv e has eit her timed ou t or been remo ved. Re-ins[...]

196 Chapter 9: Event Logs www .gate wa y .com Clearing e vent logs T o clear event l ogs: 1 From the Main Menu, select Event Logs Menu , then press E NTER . The Select Contro ller Event Log Menu opens.[...]

197 Clearing e vent logs www .gate wa y .com 2 From the Sele ct Cont roll er Ev ent Log Menu, select the controller for which you want to clear the event logs, th en press E NTER . The Event L og T ype s menu opens. 3 Fro m the Event Log T y pes me nu, s elect Clear Event Log , then press E NTER . The Clear Eve nt Log sc reen opens.[...]

198 Chapter 9: Event Logs www .gate wa y .com 4 Fro m the Cl ear Ev ent Log screen , sele ct Ye s to clear all events on this controller , then press ENTER . The event log is cleared.[...]

10 199 Dia gnostics This chapter provides information o n diagnos tics. Read this chapter to learn how to: ■ Access diagnostics ■ Use offline diagnostics ■ Use online diagnostics ■ Controller ma intenance - downloa ding firmware ■ Drive maintenance ■ Shutdown the controller ■ Use a diagn ostics dum p[...]

200 Chapte r 10: Diagnost ics www .gate wa y .com Accessing dia gnostics The RAID contro ller has a comprehens ive VT - 100 Diagnostics menu. The following operations can be per formed from the diagnostics menu: D ownload and Program Operat ional Firmware, Download a nd Program Drive Firmware, RAID 5/50 Pa rity Check, Command T racing, Shuttin g do[...]

201 Access ing diagn ostics www .gate wa y .com Important Offlin e diagnostic s can only b e perfo r med whe n there is no activ ity and req uires that th e enclosure b e disconne cted from the hos t system(s). See “Us ing offline d iagnostics” on page 202 Online di agnostics c an be perf ormed while the re is no activity in progr ess with the [...]

202 Chapte r 10: Diagnost ics www .gate wa y .com Using offline diagnostics T o view offline diagnostics: 1 Before perf o rmi ng this diagnostic, yo u mu st disconnect the host system(s) from the enclosure. 2 From the Mai n Menu, select Diagnost ics Menu , then press E NTER . The Diagn ostic s menu opens.[...]

203 Using off line diagn ostics www .gate wa y .com 3 From the Diagnostics menu, select Offline D iagnostics , then press Enter . T he Offline Diagn ostics menu opens. 4 Press E NTER to continue. The T e st Data Pattern screen opens.[...]

204 Chapte r 10: Diagnost ics www .gate wa y .com 5 Select the type of test you want performed. The Read or W rit e T e st screen opens. 6 Select the type of test to perform, the Te s t D u r a t i o n scree n o pens . 7 T ype the test duration, in minutes, then press E NTER . Th e selected test is performed.[...]

205 Using on line diagn ostics www .gate wa y .com Using online diagnostics While the controller i s connected to the ho st, it is possible to perform Controller Maintenance, Drive M aintenanc e, RAID 5/50 Parity Check diagnostics , as well as to shutdown the controllers an d perform a diagnostics dump to the terminal window . T o access online dia[...]

206 Chapte r 10: Diagnost ics www .gate wa y .com 2 From the Di agnostics me nu, select Online Diagn ostics , then press E NTER . The Onlin e Diagnostics menu op ens. 3 From the Online Diagnostics menu, selec t the o nline diagnostic te st you want to perform.[...]

207 Control ler mainten ance - downlo ading firmwa re www .gate wa y .com Contr oller maintenance - do wnloading firmware There may be an occasion when yo u need to download new or updated co ntroller firmware or reload the current firmw are. T o obtain the firmware, you may need to download it from the suppo rt W eb site, or get it from a CD or fl[...]

208 Chapte r 10: Diagnost ics www .gate wa y .com 4 When the Cs appear , select Send File from the T ransfer list (not shown). The Sen d File dialog box opens. 5 Click the brow se button and locate the new firmware file (similar to “W_t006.bin”), sele ct the 1K Xmodem protocol, then click Send . The Xmodem file send screen op ens. From the Send[...]

209 Control ler mainten ance - downlo ading firmwa re www .gate wa y .com If you elect to stop a download in progress, make sure that the stop (abort) comman d was co mpleted b y clickin g the Cancel button. 6 After the transfer scr een disappear s, press E NTER . Y ou a re returned to the Main Menu. 7 Restart the controller(s). 8 From the Main Men[...]

210 Chapte r 10: Diagnost ics www .gate wa y .com 9 From the Diagnostics menu, select Reset Control ler , then press E NTER . The Select Contro ller to Reset menu opens. 10 From the Select Controller to Reset menu, select the con tro ller on which the firmware was changed, then press E NTER . 11 Sele ct Ye s to reset the controller , then press E N[...]

211 Drive mainte nance www .gate wa y .com Drive maintenance The controller can download firmwa re to the attached hard drives. Because of the large number of hard drives on the market, it is essential to use only a Gateway approved drive firmware file. Different drive manufacturers have different methods for downloading drive firmware, som etime s[...]

212 Chapte r 10: Diagnost ics www .gate wa y .com Do wnload the firmwa re from the host T o download firmware from the host: 1 From the Mai n Menu, select Diagnost ics Menu , then press E NTER . The Diagnostics menu opens. 2 From the Diagnostics menu, select Online D iagnostics , then press E NTER . The Onlin e Diagnostics menu op ens.[...]

213 Drive mainte nance www .gate wa y .com 3 From the Online Dia gnostics menu, select Drive Maintenan ce , then press E NTER . The Drive Firmware Menu opens. 4 From the Drive Firmware Menu, select the Downloa d Drive Firmware to Buffer transfer method, then press E NTER . At the bottom of th e screen a series of “C” characters will be displaye[...]

214 Chapte r 10: Diagnost ics www .gate wa y .com 7 Select the 1K Xmo dem protocol, then click Send . The Xmodem fil e send scr een op ens. Y ou can f ollow the pr ogress of the downlo ad fr om this screen. Read f irmware from a dr ive to the buffer T o read firmware from a drive to a buffer: 1 From the Main Menu, select Diagnostics M enu , then pr[...]

215 Drive mainte nance www .gate wa y .com 2 From the Diagnostics menu, select Online D iagnostics , then press E NTER . The Onlin e Diagnostics menu op ens. 3 From the Online Dia gnostics menu, select Drive Maintenan ce , then press E NTER . The Drive Firmware Menu opens. 4 From the Drive F irmware Menu, select Read Fir mware From Drive to Buffer [...]

216 Chapte r 10: Diagnost ics www .gate wa y .com 6 Choose one of the av ailable options and pre ss E NTER . Y ou can downl oad to all supported d rives, all supported unus ed or hot spar e driv es, or a ll supp orted drives t hat ar e not alr eady at this f irmware level. If any used drives are to be updated, you are warned that if a drive firmwar[...]

217 Drive mainte nance www .gate wa y .com Chec king RAID 5/50 parity If an array is not ini tialized during creation (for example, trusted ), or if both controllers are replaced after the arra y is turned off w ith write operations in progress, you may need to verify the pa rity data on the array . It is also prudent to perform this check periodic[...]

218 Chapte r 10: Diagnost ics www .gate wa y .com 2 From the Diagnostics menu, select Online D iagnostics , then press E NTER . The Onlin e Diagnostics menu op ens. 3 From the Onl ine Diagnost ics menu, selec t RAID 5/50 P arity Check , then press E NTER . Th e Parity Check Menu op ens.[...]

219 Drive mainte nance www .gate wa y .com 4 From the select RAID 5/50 Parity C heck Menu , sele ct e ith er A ll RAID 5/50 Array s or Specific RAID 5/50 Arrays , then press E NTER . Th e Pari ty Check Option Menu opens . 5 From the Parity Check Options Menu, select the parity check options you want to use. Parity check options ar e : Option Descri[...]

220 Chapte r 10: Diagnost ics www .gate wa y .com When you have selected th e required options, press E NTER . The Apply Parity Check screen opens. 6 From the Apply Parity C heck screen, select Ye s , then press E NTER . The parity che ck st arts and the Par ity Chec k Men u returns. If an error occurs during the check or re write, it is displayed [...]

221 Drive mainte nance www .gate wa y .com T o monitor commands: 1 From the Main Menu, select Diagnostics M enu , then press E NTER . The Diagn ostics menu opens. 2 From the Di agnostics me nu, select Online Diagn ostics , then press E NTER . The Onlin e Diagnostics menu op ens.[...]

222 Chapte r 10: Diagnost ics www .gate wa y .com 3 From the Online Diagnostics menu, select T ar get Command T race Settings , then press E NTER . The T a rget Command T race Settin gs scree n opens. 4 From the T arget Command T race Settings screen, press E NTER to toggle the command trace to be Enab led or Disabled . When enabled, all incoming c[...]

223 Shutting down t he cont roller www .gate wa y .com Shutting do wn the contr oller This option let s you gracefully shutdown the controller . When this method is used, all cache is written befo re t he controller is s hutdo wn. T o shutdown the controllers: 1 From the Main Menu, select Diagnostics M enu , then press E NTER . The Diagn ostics men[...]

224 Chapte r 10: Diagnost ics www .gate wa y .com 2 From the Diagnostics menu, select Shu tdown Contr oller , th en press E NTER . The Select C ontroller to Shut down scre en opens. 3 From the Select Co ntroller to Shutdown screen, select a cont roller you want to shutdown, t hen press E NTER . The Shut down Contr oller screen open s. 4 From the Sh[...]

225 Dumpin g diagnostic s www .gate wa y .com 5 T o restart the controller , you can either remove and re-insert t he RAID controller in its slot or turn the enclosure off t hen back on. Dumping dia gnostics Dur ing th e proce ss of t roubl eshoo ting a problem, it may be helpful to capture the diagnostics data. The info rmation capture to the term[...]

226 Chapte r 10: Diagnost ics www .gate wa y .com 5 Repeat steps 1 and 2. 6 Sele ct Ca pture T ext > Stop from the T ransfer list . 7 Access the text file using a text editor . Tips & T ricks Y ou will notic e the cursor jumps to the low er-right-corner of the scree n and after compl etion will return to the upper-left -corner of the screen [...]

A 227 Optimizing RAID 5 Write P erf ormance This chapter provides inf ormation on optimizing RAID 5 write performance. Read th is chapter to learn how to: ■ Understand optimizati on pa rameters ■ Use RAID 5 sub-arrays ■ Promote faster rebuilds[...]

228 Appendi x A: Optimiz ing RAID 5 Wr ite Perfo rmance www .gate wa y .com Intr oduction W ith a typ ical RAID 5 implementation , there are a number of step s necessary to write the data to the media. Every write from the host syst e m will typically generate two XOR o perations and thei r associated data tran sfers to t wo drives. If the accesses[...]

229 Introdu ction www .gate wa y .com is used, then the st r ipe size is 1 MB (4 chunks × 256 K). So, for maximum performance, the host could eithe r send 5 × 1 MB write comman ds, or 20 × 256 K write co mmands. The effectiveness of the cont ro ller’ s ability to perform a Full Stripe W rite depends on a nu mber of parameters. Sequential acces[...]

230 Appendi x A: Optimiz ing RAID 5 Wr ite Perfo rmance www .gate wa y .com T o g e t t h e h i g h e s t p e r f o r m a n c e f r o m t h i s s y s t e m , i t i s n e c e s s a r y t o h a v e a number of stripes being written i n parallel. As the array expands, with more and more drives, the num ber of commands (and amount of sequential data) n[...]

231 Using RAID 5 s ub-arrays www .gate wa y .com it is still o nly necessary to cluster four write commands together , as oppo se d to the seven necessar y as indicated below . T he ar ray of drives appears as two separate sub-arrays, each with it s own rotating parity . I t c a n b e s e e n t h a t t h e m o r e s u b - a r r a y s used, the more[...]

232 Appendi x A: Optimiz ing RAID 5 Wr ite Perfo rmance www .gate wa y .com of the drives in the array . This increa ses both the rebuild speed and the speed of access to missing data , which also has to be recreated from the remainin g drives. Summar y In summary , for maxi mum perform ance using RAID 5, we recommend that you u s e f o u r o r f i[...]

B 233 T echnical Suppor t Thi s cha pte r pro vid es in for mat ion on tro ubl esho ot ing. Read th is chapter to learn about: ■ Getting T ech nical Support ■ Notices[...]

234 Appendi x B: www .gate wa y .com T echnical Suppor t Gat eway of fers a wide r ange of cust omer serv ice, t echni cal sup port, and information services. T elephon e numb ers Y ou can access the fol lo wing services through y our telephone to get answers to your questions: Resource Service description How to reach F ax on demand support Order [...]

235 Notices www .gate wa y .com Notices Copy r ight © 2004 Gate way , Inc. All Rights Reserved 14303 Gatewa y Place P owa y , CA 92064 USA All Rights Reser ved This publication is protected b y copyright and all rights are reser ved. No par t of it may be reproduced or transmitted b y an y means or in an y form, without pr ior consent in writing f[...]

236 Appendi x B: www .gate wa y .com[...]

237 Index A access align ment 229 access size 160 , 229 access statist ic s 158 accessing configuration ut ility 5 diagnostics 200 event logs 17 4 LUN configuration 66 RAID controllers 7 Add or Remove Globa l and Dedicated Spares sc reen 48 adding additiona l sub-arra ys 57 drives 54 hot spare drives 121 addi tional configu ration 14 3 advance d co[...]

238 navigating 9 configuration WWN 14 configuring arr ay write back ca che 36 auto hot sp are 115 hot spare drives 47 readahea d cache 36 RS-232 port 13 3 writ eback ca che 36 connecte d hosts viewing 10 8 controller accessing 7 downloading firm ware 207 enclosure events 15 0 LUN 124 mainten ance 207 shutting down 223 vie wing inf orma tio n 13 , 1[...]

239 Delete Ar ray scre en 51 deleting array 50 logical drive 82 SA N LUN ma ppin g 100 diagnostics 199 accessing 200 dumping 225 offline 202 online 205 downloading firmware 207 firmware from host 21 2 Drive Capacity Re serve screen 32 Drive Event FW Download Complete 189 FW Downl oad Start 189 Reallocate LBA 189 dri ve eve nt 18 4 Array Critical 18[...]

240 time 15 free space viewing 68 H hardware configuration settin gs 124 Host Event CC to Ho st ID 191 Detected Power- on/Reset 19 0 L o g g e d i n a t I D 19 0 host events 190 hot spare c onfiguration 118 hot spare drives adding 121 configuring 47 , 118 removing 121 viewing 11 8 I information voltage 13 initialization 20 Initialize/Trust Arrays s[...]

241 packetized p rotocol 13 6 parameters commun ications 7 rebuild 112 pari ty check ing RAID 5/ 50 217 perfor mance optimizing RAID 5 write 227 pool spare (global) 49 Port Data Rate 130 port name 90 Q QAS 136 R RAID 5 access align ment 229 access size 229 checking parity 21 7 drive selection 21 numb er of ou tstan ding com mands 229 optimizing 21 [...]

242 SCSI ID changing controller port 127 segmentation logical drive 64 S e l e c t a H o s t L U N t o M o d i f y M a p p e d Number screen 87 Select a Logical Drive to Delete sc r een 84 Select Array screen 39 Sele ct Chun k Size screen 29 select drives 31 Select Logical Drive for Availabi lity screen 81 sequential acc ess 229 RAID 5 229 Sequenti[...]

243 controller information 13 , 138 free space 68 hot spare drives 118 miscellaneous statist ics 165 SA N LUN ma ppin gs 93 statistics 155 unassigned LUN free space 68 voltage controller 15 information 13 VT-100 termi nal using 7 W write cluster rate 164 writ eback ca che 36 configuring 36 , 40 Writeback Parameters Select Array menu 44 WWN controll[...]

244 8509736[...]

A MAN NST OR VT -100 SW GDE R0 1/04[...]