Product manual

VTrak E-Class Product Manual
186
• 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 functions and your
data is available. However, access is slower due to the synchronizing
operation.
• Critical/Degraded – This condition arises as the result of a physical drive
failure. A degraded logical drive still functions 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.
• 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 functions
and your data is available. However, access is slower due to the rebuilding
operation.
• Transport Ready – After you perform a successful Prepare for Transport
operation, this condition means you can remove the physical drives of this
disk array and move them to another enclosure or different drive slots. After
you relocate the physical drives, the disk array status shows OK.
Accepting an Incomplete Array
This condition is the result of a missing physical drive. See “Incomplete Array” on
page 320 before you use this function.
To accept an incomplete array:
1. From the Main Menu, highlight Disk Array Management and press Enter.
2. Highlight the disk array you want and press Enter.
3. Highlight Accept Incomplete Array and press Enter.
Enabling Media Patrol, PDM, and Power Management on a
Disk Array
Media Patrol checks the magnetic media on physical drives. Predictive Data
Migration (PDM) migrates data from the suspect physical drive to a spare
physical drive before the disk drive fails. Power Management parks the heads,
spins down, and stops rotation after a set period of time to reduce power
consumption.
Media Patrol, PDM, and Power Management are enabled by default. Enabled is
the recommended setting for both features.
To enable Media Patrol, PDM, and Power Management on a disk array:
1. From the Main Menu, highlight Disk Array Management and press Enter.
2. Highlight the disk array you want and press Enter.