Adaptec AHA-3980 Manuel utilisateur

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Understanding the Array Software

Adaptec AHA-398x adapters use the following pro-

grams to create and manage arrays:

■The Adaptec Initial Array Configuration Utility,

which runs under DOS. Use this utility to create

an initial bootable array to use as a boot device.

(After arrays are created, they run under

NetWare.)

■The Adaptec Array Driver Copy Utility, which

runs under DOS. Use this utility to copy DOS and

NetWare drivers to your computer’s hard disk.

■The Administrator Utility, which runs under

NetWare. Use this utility to create, modify, and

manage arrays.

You can find these programs on the Adaptec Initial

Array Configuration Utility and AHA-3980/3985 Driv-

ers and RAID Utilities disks included with each

AHA-398x adapter.

We recommend that you use the Adaptec Initial

Array Configuration Utility to create the first array

on a new server only if you want to boot from that

array. Then install NetWare and the required driv-

ers, as described in the AHA-3980/3980W/3985/

3985W User’s Guide, and use the Administrator Util-

ity to create and manage other arrays. If you do not

need to boot the server from an array, install

NetWare and use only the Administrator Utility to

create and manage arrays.

Selecting Menu Options

There are two ways to select menu options in the

AHA-398x utility programs:

■If the option name includes a hot key—a light blue

character in color monitors, and a gray character

in monochrome monitors—type the hot key. In

this guide, hot keys are underlined in the option

name. In the Display Array Status option, for

example, the hot key is D.

■Press the ↑ and ↓keys to highlight the option,

and then press Enter.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Initial Array Configuration Utility

Follow these steps to create the first array with the

Adaptec Initial Array Configuration Utility. For

more detailed information on all Adaptec Initial

Array Configuration Utility options, see the

AHA-3980/3980W/3985/3985W User’s Guide.

Make a bootable copy of the Adaptec InitialArray

Configuration Utility diskette.

Insert the diskette copy in the Adrive and boot

the computer.

When the computer has finished booting, type

a:arconfig and press Enter.

From the Main menu, select Add New Array. The

Selection List menu appears.

Press Enter to define Array #1.

Select the array type (e.g., Mirrored).

If you select RAID5 or RAID0, a prompt asks if

you want to make the array convertible between

RAID 5 and RAID 0.

Type the number of drives (excluding spares) you

want in the array, and press Enter.

Press Tab to select an adapter channel and dis-

play its drives.

Select each disk for the array by pressing the ↑

and ↓keys to highlight the disk name, and then

pressing Enter or Ins.

Caution:

If you choose disks that contain

data, all the data will be lost when you for-

mat the array. A warning message appears if

you select a disk that contains partition

information.

To select disks on a different adapter channel,

repeat steps 7 and 8. To deselect the most recently

selected disk, press Del. (All disks in the array

must be connected to the same AHA-398x adapter.)

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

When you have selected the number of disks you

specified in step 7, the next screen appears.

If the array is mirrored or RAID 5 and at least one

disk is unassigned, a prompt asks whether you

want to choose a spare disk:

If you do not want a spare: Type n.

To select a spare: Type y. If prompted for the number

of spares, type the number (1or 2), and press Enter.

Then follow steps 8 and 9 to select the spares.

Note:

A spare must have at least the capacity

of the smallest disk in the array.

When you are prompted, select a formatting

method to initialize the new array.

–Low-level format is a lengthy process that

writes a consistent pattern to the disks and

checks the disk surface for defects.

–Initialize the array with zeroes (recom-

mended method) is faster than low-level for-

matting, but it does not verify the integrity of

the disks.

Caution:

Back up the disks first if they con-

tain data you want to keep! Low-level for-

matting or initializing an array erases all

data on the array disks.

When you are prompted, select a block size for

the array. The recommended size is 16 KBytes.

When the prompt appears, confirm that you want

to format the array.

When you see the message Initialization of

Array #1 is complete, press any key to return to

the Main Menu.

Press Esc, and reboot the computer when you see

the prompt.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Array Driver Copy Utility

The Adaptec Array Driver Copy Utility is on the

AHA-3980/3985 Drivers and Raid Utilities diskette

included with the AHA-398x adapter. You use this

utility to copy DOS and NetWare drivers to your

hard disk drive. These drivers are required to oper-

ate arrays under NetWare. You need the DOS driv-

ers if you want to install NetWare or other software

from a SCSI CD-ROM drive connected to your

AHA-398x adapter.

See the AHA-3980/3980W/3985/3985W User’s Guide

for instructions on how to use the Adaptec Array

Driver Copy Utility to install these drivers.

Administrator Utility

This section describes the most frequently used

options in the Administrator Utility. For complete

information on all options, see the AHA-3980/3980W/

3985/3985W User’s Guide.

Starting and Exiting the Utility

To start the Administrator Utility:

If the server is not running, start it.

At the server prompt, enter load aruadmin (load

c:aruadmin if loading for the first time).

To exit the Administrator Utility:

Press Esc until the prompt Do you want to exit the

Administrator? (y|n) appears.

Type y. You return to the server prompt.

The Main and System Menus

The Main menu is the primary Administrator Utility

menu. If the system has only one array, the Main

menu appears when you start the Administrator util-

ity. If the system has multiple arrays, the System

menu appears first. In this case, follow these steps to

display the Main menu:

From the System menu, select Select Target

Array.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Select the array for which you want to display the

Main menu. The Main menu for that array appears.

On systems with multiple arrays, the array status is

indicated by the color of the array name that appears

in the box to the left of the menus. Red means the

array is off-line; yellow means the array has a down

drive; green means the array is operating normally.

Adding an Array

Follow these steps to add a new array in the Admin-

istrator Utility:

From the System menu or the Main menu, select

Change Array Configuration.

Select Add an Array. The Selection List menu

appears.

Follow steps 8 through 14 in Initial Array Configu-

ration Utility on page 2.

When you have finished defining arrays and you

are back at the Selection List menu, press Esc.

Displaying Array Information

To view logical and physical array characteristics

and any utilities running on an array:

From the System menu or the Main menu, select

Display Array Status.

Select Display Array Overview (to view logical

characteristics) or Display Array Drive Status (to

view physical characteristics and utilities running

on the array).

If in step 1 you started from the System menu,

press any key to view information on the next

array.

To display performance statistics for an array:

From the Main menu for the array, select Display

Array Status.

Select Display Statistics.

Select Temporary Array Statistics (array read/

write information), Temporary Drive Statistics

(drive read/write information), Permanent Drive

Statistics (errors, successful retries, and

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

reassigned blocks), or Display Volume(s) on

Array (list of partitions and volumes on the array.

When finished viewing the statistics, press Esc to

display a pop-up menu, then select Quit.

Verifying Arrays

If a mirrored or RAID 5 array becomes inconsistent,

data will be lost if an array drive fails. Follow these

steps to verify the consistency of data on an array:

From the Main menu for the array, select Verify

Functions.

Select Start Verify.

Indicate the priority of the operation by typing a

number from 0 through 9 (0 = lowest priority;

9 = highest priority).

To schedule routine verifications, see Scheduling

Tasks on page 8.

Reconstructing Data

Follow these steps to reconstruct data on a replace-

ment disk if a disk fails in a mirrored or RAID 5 array

and no spare disk is available. (If a spare is available,

the spare replaces the failed disk and the data is

reconstructed automatically.):

Physically replace the failed disk, if necessary.

Note:

If your drive enclosure requires all host

adapter activity to stop while you replace a

drive, select Hot Swap Pause before you

replace the drive. When you have finished,

press any key to resume SCSI bus activity.

From the Main menu for the array, select

Reconstruct Functions.

Select the reconstruction option you want. If the

array is mirrored, for example, select Re-mirror

Single Drive or Re-mirror all DOWN Drives.

Indicate the priority of the operation by typing a

number from 0 through 9 (0 = lowest priority;

9 = highest priority).

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

When prompted, type yto continue, or nto cancel

the operation.

To schedule a reconstruction, see Scheduling Tasks on

page 8.

Note:

If you used Hot Swap Pause to stop

SCSI bus activity, resume activity by press-

ing any key at the Administrator Utility

screen.

Reactivating an Off-line Array

An array goes off-line if the power fails or if someone

removes a second disk when one has already been

removed. To reactivate an off-line array:

Physically correct the problem that caused the

array to go off-line.

From the Main menu for the array, select

Reactivate Off-line Array.

When prompted, type yto reactivate the array, or

nto cancel the operation.

Activating a Spare Disk

If a disk fails in an array that has spares, a spare is

automatically activated and the failed disk is marked

Down. When you replace the failed disk with a new

disk drive at the same channel and SCSI ID, the

replacement disk becomes the new spare.

Testing a Spare Disk

To test a spare disk, use the Scheduler. Instructions

are in the next section.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Scheduling Tasks

You can schedule the following tasks:

■Verifying mirrored and RAID 5 arrays

■Testing spare disks

■Reconstructing data on a replacement disk

Follow these steps to schedule a task:

From the Main menu for the array, select

Scheduler Functions.

Select Schedule Verify, Schedule Reconstruct, or

Schedule Spare Testing.

Note:

If you schedule a verification, all

arrays are verified. To verify only one array,

follow the procedure given in Verifying

Arrays on page 6.

Select one of these options:

Schedule Task to Run Once: To schedule the task

for a single time.

Schedule Cyclic Task: To schedule the task to run

at regular intervals. If you select this option, the

Task Schedule Intervals menu appears. Select

Schedule Daily, Schedule Weekly, or Other.

Test Now (appears only if you selected Schedule

Spare Testing): To test the spare immediately. If

you select this option, you are finished—ignore

steps 4 and 5.

Follow the prompts and the examples to enter the

date and time for the task.

If you are scheduling a verification, a new menu

appears. Select In Parallel to have the arrays veri-

fied simultaneously, or Serially to have the arrays

verified in sequence.

Note:

Verifying arrays in parallel usually

slows your system more than verifying them

serially.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Adding a Spare Disk

If you create a mirrored or RAID 5 array without

spare disks (RAID 0 arrays cannot have spares), fol-

low these steps to add up to two spare disks later:

From the Main menu for the array, select Change

Array Configuration.

Select Add Spare Drives.

If prompted to enter the number of spares, type 1

or 2and press Enter.

Press Tab to select the channel with the spare

disk(s). A list of disks on that channel appears to

the right. Select each spare disk by pressing the ↑

and ↓keys until the disk name is highlighted, and

then pressing Ins or Enter.

When you have finished selecting spares, press Esc.

When prompted, type yto accept the new spare

disks, or nto reselect the disks.

You need not reformat the array.

Deleting a Spare Disk

To delete a spare disk from an array, select the Delete

Spare command from the Configuration menu. If the

array has two spares, first select the spare you want

to delete. Type ywhen the prompt asks you to con-

firm the deletion.

Initializing Arrays

When you create a new array or redefine disks (other

than spares) in an existing array, you are automatically

prompted to initialize the array. You can choose to low-

level format the array or initialize it with zeros. (For a

brief description of both formatting methods, see

page 3.)

If necessary, you can reinitialize an existing array if

the data on the array has become corrupted. To do

this, follow the directions in the AHA-3980/3980W/

3985/3985W User’s Guide.

Quick Reference: Array Software

Part Number: 510893-00, Rev. B

Print Spec Number: 493983-00

Current Date: 3/1/99 ECN Date: 3/19/96

Converting between RAID 0 CVT and RAID 5 CVT

Formats

You can convert a RAID 5 CVT array to a RAID 0

CVT array and back again without loss of data and

without reformatting. If you convert a RAID 5 CVT

array with spares to a RAID 0 CVT array, the RAID 0

CVT array retains the spares, but they are not usable.

When you convert the array back to a RAID 5 CVT

array, the spares can again be used.

To convert between formats, follow these steps:

From the Main menu for the array, select Convert

RAID Level.

Select Convert to RAID0 CVT or Convert to

RAID5 CVT.

Indicate the priority by typing a number from 0

through 9 (0 assigns the lowest priority; 9, the

highest).

When prompted, type y to continue; otherwise,

type n.

To cancel a conversion while it is under way, follow

step 1 to display the Convert menu and then select

Abort Convert.

Deleting Arrays

Caution:

Before you delete an array, back up

any data you want to keep. When you delete

an array, all array data will be lost!

Follow these steps to delete an array:

From the System menu, select Change Array

Configuration.

Select Delete an Array.

Select the array you want to delete.

When prompted, type yto delete the array, or nto

cancel the operation.

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