User Manual

disk ArrAy offline / logiCAl drive offline
Disk arrays are made up of physical drives. Logical drives are created on the disk array. When a disk
array and its logical drives go Ofine, the data stored in the logical drives is no longer accessible.
RAID 0 logical drives go Ofinewhen ONE physical drive is removed or fails. RAID 1, 1E, 5, and 10
logical drives go Ofinewhen TWO physical drives are removed or fail.
RAID 6 logical drives go Ofinewhen THREE physical drives are removed or fail.
The PROMISE Utility reports these conditions in the following places:
• Dashboardicon– A red X icon appears beside the disk arrays, logical drives, and physical
drives under System Status.
• PhysicalDriveicon–PhysicaldrivesareshownDead,Ofine,orMissing.
• LogicalDriveicon – Disk Array and Logical Drives are marked with a red X icon.
• Eventicon – Major event for the logical drive and a Warning event for the physical drive. Under
Background Activities, no Rebuild takes place. See Repairing, below.
rePAiring An offline DiSK ArrAy or logicAl Drive
RAID 1, 1E, 5, 6, and 10 Logical Drives
If a fault-tolerant logical drive, RAID 1, 1E, 5, 6, and 10, goes Ofine, it may be possible to recover your
data.
RAID 0 Logical Drives
Ifalogicaldrivebasedonanon-fault-tolerantdiskarray,RAID0,goesofine,allofthedataonthe
logical drive is lost.
WARNINGWARNING
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Pegasus2 R4/R6/R8 Product Manual