Managing Logical Drives; Viewing Information For All Logical Drives - Promise Technology Network Device EX4650 User Manual

SuperTrak EX Series User Manual

Managing Logical Drives

Logical drives are made from disk arrays. In the Tree, you can see a graphic
representation of the logical drives that belong to each array. You can see a
summary of all logical drives in the subsystem under Logical Drive Summary.
Logical drive management includes the following functions:
• Viewing Information for All Logical Drives (page 166)
• Locating a Logical Drive (page 167)
• Viewing Logical Drive Information (page 167)
• Viewing Logical Drive Statistics (page 168)
• Changing Logical Drive Settings (page 168)
• Initializing a Logical Drive (page 169)
• Running Redundancy Check (page 170)
• Viewing the Logical Drive Check Table (page 170)

Viewing Information for All Logical Drives

To view information about all logical drives in a disk array:
1. Click the Subsystem
2. Click the Disk Arrays
3. Click the Disk Array
4. Click the Logical Drives
Logical Drive Status
• OK – This is the normal state of a logical drive. When a logical drive is OK, it
is ready for immediate use. For RAID Levels other than RAID 0 (Striping),
the logical drive has fault tolerance.
• Synchronizing – This condition is temporary. Synchronizing is a
maintenance function that verifies the integrity of data and redundancy in the
logical drive. When a logical drive is Synchronizing, it will function and your
data is available. However, access will be slower due to the synchronizing
operation.
• Critical/Degraded – This condition arises as the result of a physical drive
failure. Or, one of the physical drives was accidently or intentionally
disconnected or pulled from its enclosure. A critical or degraded logical drive
will still function and your data is still available. However, the logical drive
has lost its fault tolerance.
• Rebuilding – This condition is temporary. When a physical drive has been
replaced, the logical drive automatically begins rebuilding in order to restore
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