Adaptec AAR-2020SA Bedienungsanleitung PDF herunterladen (Seite 4)

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4. Array Level-Specific Notes

4.1 RAID 10 Notes

- If a RAID-10 is degraded, the BIOS reports a degraded RAID-0

and a degraded RAID-1 instead of degraded RAID-10.

- You cannot change the priority of a RAID-10 verify. Setting

the priority at the start of a verify has no effect. The

priority is still shown as high. Changing the priority of

a running verify on a raid-10 changes the displayed priority

until a rescan is done, then the priority shows as high again.

- A RAID 10 created using the ACU using the CLEAR method shows as

"IMPACTED" until the CLEAR operation is complete. Also, the

drives' statuses are reported as Not Busy, even though the drives

are clearing.

- Performing a Verify and Verify/Fix on an RAID 10 displays the

same message text in the event log, "Build/Verify started on

second level array of array 'Array_0.'" You may see the message

three times for a Verify, but only once for a Verify/Fix.

- Adaptec 2020ZCR/2120S/2200S only -- RAID 10 arrays with greater

than 20 drives support the Build/Verify command, but not the

Clear command.

- Do not reboot a system when a degraded RAID 10 has an Online

Capacity Expansion (OCE) in progress. Allow the OCE to complete

before rebooting the system.

4.2 RAID 50 Notes

- Adaptec 2020ZCR/2120S/2200S only -- RAID 50 arrays with greater

than 18 drives support the Build/Verify command, but not the

Clear command.

4.3 Simple and Spanned Volume Notes

- Adaptec 2020ZCR/2025ZCR/2020SA/2025SA only -- For a redundancy

array (R5, R1, etc.), an alarm will normally sound for a few

seconds when a member of an array goes off line. However, for

a non-redundancy array, one very short beep will sound if a

member of an array goes off line.

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5. Controller-Specific Compatibility Issues

5.1 SATA Controllers

- A Clear operation on an array causes a severe performance impact

to other processes, such as Build/Verify processes, involving the

same array members. Therefore, Adaptec recommends that you NOT

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