Promise Technology Network Device EX8654 - Manual (Page 180)

SuperTrak EX Series User Manual
166
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 icon in Tree View.
2. Click the Disk Arrays icon.
3. Click the Disk Array icon.
4. Click the Logical Drives icon
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