IBM Netfinity ServeRAID-3H, Инструкция по установке и эксплуатации, Страница: 170 / 212

General Information about the Rebuild Operation
A physical hard disk drive can enter the rebuild state if:
Ÿ
You physically replace a defunct drive that is part of the critical
logical drive.
When you physically replace a defunct drive in a critical logical
drive, the ServeRAID adapter or controller rebuilds the data on
the new physical drive
before it changes the logical drive state
back to Okay.
Ÿ
The ServeRAID adapter or controller adds a hot-spare or a
standby hot-spare drive to the array and changes its state from
Hot-Spare or Standby Hot-Spare to Rebuilding.
Automatically Rebuilding the Defunct Drive
The ServeRAID adapter or controller will rebuild a defunct drive
automatically when all of the following conditions exist:
Ÿ
The physical drive that failed is part of a RAID level-1 or RAID
level-5 logical drive.
Ÿ
A hot-spare or standby hot-spare drive with a capacity equal to
or greater than the capacity of the defunct drive is available the
moment the drive fails.
– When multiple hot-spare drives are available, the ServeRAID
adapter or controller searches for a hot-spare drive of the
appropriate size. The smallest drive that meets this
requirement enters the Rebuild state.
– If no hot-spare or standby hot-spare drives are available, the
rebuild operation will start the moment you replace the
defective drive.
Note: If you physically replace the drive and the new drive
does not appear in the Physical Drives branch of the
Main Tree, you must scan for new or removed Ready
drives.
Ÿ
No rebuild, synchronization, or logical-drive migration operation is
in process.
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IBM ServeRAID-3H and ServeRAID-3L Adapters