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VTrak 15110 User Manual
124
• Alias – A user-specified name for the logical drive. If the logical drive was
created at the same time as its disk array, it will have the same alias.
• RAID Level – The RAID of the logical drive. If the logical drive was created
at the same time as its disk array, it will have the same RAID level
• Disk Array ID – The disk array ID number to which this logical drive belongs.
• Stripe – The stipe block size of this logical drive specified at its creation.
• Status – The operating condition of a logical drive.
• OK / Functional – This is the normal state of a logical drive. When a
logical drive is OK / Functional, it is ready for immediate use. For RAID
Levels other than RAID 0 (Striping), the logical drive has full
redundancy.
• Synchronizing – This condition is temporary. Synchronizing is a
maintenance function that verifies the integrity of data and redundancy
in the logical drive. When an logical drive is Synchronizing, it will
function and your data is available. However, access will be slower due
to the synchronizing operation.
• Rebuilding – This condition is temporary. When a physical drive has
been replaced, the logical drive automatically begins rebuilding in order
to restore redundancy (fault tolerance). When a logical drive is
rebuilding, it will function and your data is available. However, access
will be slower due to the rebuilding operation.
• Critical – This condition arises as the result of a physical drive failure. A
Critical logical drive will still function and your data is still available.
However, the logical drive has lost redundancy (fault tolerance). You
must determine the cause of the problem and correct it.
• Offline – This condition arises as the result of a second physical drive
failure. An Offline logical drive is not accessable but some or all of your
data may remain intact. You must determine the cause of the problem
and correct it.
To see more information about a specific logical drive, click on its number in the
Device ID list.
Logical Drive
The Logical Drive–Information tab gives a description and reports the status of
the selected logical drive. A logical drive is a portion of a disk array. The PC's
operating system recognizes the logical drive as if it were a single phyical drive.
You can write data to and read data from a logical drive in the VTrak enclosure as
if it were a physical drive inside the PC.
To see the logical drives under a disk array:
1. Click on the Subsystem icon in Tree View.