IBM 86625RY Hardware Maintenance Manual - Page 91

Physical drive state descriptions, See Rebuilding a defunct

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Drive State Blocked Critical Migrating Critical System Critical Meaning During a rebuild operation, the ServeRAID controller sets the state of any RAID level-0 logical drives associated with a failed array to the Blocked state; then, it reconstructs the data that was stored in RAID level-1 and RAID level-5 logical drives. After the Rebuild operation completes, you can unblock the RAID level-0 logical drives, and access them once again. However, the logical drive might contain damaged data. You must either re-create, install, or restore the data from the most recent backup disk or tape to the RAID level-0 logical drive. A logical drive in the critical state that is undergoing a logical drive migration (LDM). The ServeRAID controller uses this reserved state during a logical drive migration (LDM). A RAID level-1 or level-5 logical drive that contains a defunct physical drive is in the critical state. A critical logical drive is accessible, despite a physical drive failure. Attention If the state of the logical drive is critical, replace and rebuild the defunct drive as soon as possible to prevent the loss of data. If a second drive fails before the first rebuild completes, you might lose valuable data. See "Rebuilding a defunct drive" on page 157 for more information. Migrating Offline Okay System The logical drive is undergoing a logical drive migration; that is, a change in RAID levels, a change in logical drive size, or an increase in free space. The logical drive is offline and not accessible. This state occurs if one or more physical drives in a RAID level-0 logical drive is defunct. This state also occurs when two or more physical drives in a RAID level-1 or level-5 logical drive are defunct. The logical drive is okay. It is in a good, functional state. The ServeRAID controller uses this reserved state during logical drive migration (LDM). If the state of the logical drive is critical you must replace and rebuild the defunct drive. See "Rebuilding a defunct drive" on page 157 for more information. Physical drive state descriptions: The following table provides descriptions of the valid physical drive states. Netfinity 5500 M20 - Type 8662 83

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If the state of the logical drive is critical you must replace
and rebuild the defunct drive.
See “Rebuilding a defunct
drive” on page
157 for more information.
Physical drive state descriptions:
The following table provides descriptions of the valid
physical drive states.
Drive
State
Meaning
Blocked
During a rebuild operation, the ServeRAID
controller sets the state of any RAID level-0
logical drives associated with a failed array
to the Blocked state; then, it reconstructs the
data that was stored in RAID level-1 and
RAID level-5 logical drives.
After the Rebuild operation completes, you
can unblock the RAID level-0 logical drives,
and access them once again.
However, the
logical drive might contain damaged data.
You must either re-create, install, or restore
the data from the most recent backup disk or
tape to the RAID level-0 logical drive.
Critical
Migrating
A logical drive in the critical state that is
undergoing a logical drive migration (LDM).
Critical
System
The ServeRAID controller uses this reserved
state during a logical drive migration (LDM).
Critical
A RAID level-1 or level-5 logical drive that
contains a defunct physical drive is in the
critical state.
A critical logical drive is
accessible, despite a physical drive failure.
Attention
If the state of the logical drive is critical,
replace and rebuild the defunct drive as
soon as possible to prevent the loss of
data.
If a second drive fails before the
first rebuild completes, you might lose
valuable data.
See “Rebuilding a
defunct drive” on page
157 for more
information.
Migrating
The logical drive is undergoing a logical drive
migration; that is, a change in RAID levels, a
change in logical drive size, or an increase in
free space.
Offline
The logical drive is offline and not
accessible.
This state occurs if one or more
physical drives in a RAID level-0 logical drive
is defunct.
This state also occurs when two
or more physical drives in a RAID level-1 or
level-5 logical drive are defunct.
Okay
The logical drive is okay.
It is in a good,
functional state.
System
The ServeRAID controller uses this reserved
state during logical drive migration (LDM).
Netfinity 5500 M20 - Type 8662
83