IBM ServeRAID, User Reference

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Drive state Meaning
Critical A RAID level-1, level-1E, level-5, or level-5E 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, see “Rebuilding a defunct drive” on
page 157.
Migrating The logical drive is undergoing a logical-drive migration; that is, a change in RAID levels, a
change in logical-drive size, an increase in free space, or a RAID level-5E compression or
decompression.
Offline The logical drive is offline and not accessible. This state occurs when one of the following is
true:
v
One or more physical drives in a RAID level-0 logical drive are defunct.
v
Two or more physical drives in a RAID level-1, level-1E, or level-5 logical drive are defunct.
v Three or more drives in a RAID level-5E logical drive are defunct.
If any of these is true, see “Rebuilding a defunct drive” on page 157.
Okay The logical drive is working properly. It is in a good, functional state.
System The ServeRAID controller uses this reserved state during logical-drive migration.
Chapter 3. Understanding RAID technology
33