Product manual

Chapter 5: Management with the CLU
237
See “Enabling Media Patrol, PDM, and Power Management on a Disk Array” on
page 235.
For Media Patrol rate, see “Making Background Activity Settings” on page 273.
For more information, see page 331.
Running PDM on a Disk Array
Predictive Data Migration (PDM) migrates data from the suspect physical drive to
a spare drive before the physical drive fails.
Before you can run PDM, you must have a replacement or target physical drive of
adequate capacity for your disk array.
To run PDM 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.
3. Highlight Background Activities and press Enter.
4. Highlight Predictive Data Migration and press Enter.
Default source and target drives are shown with possible alternative choices.
5. To choose different drive, highlight the drive, press the backspace key to
remove the current number, then type a new number.
6. Highlight Start and press Enter.
See “Enabling Media Patrol, PDM, and Power Management on a Disk Array” on
page 235.
For PDM rate, see “Making Background Activity Settings” on page 273.
Running Transition on a Disk Array
Transition is the process of replacing a revertible spare drive that is currently part
of a disk array with an unconfigured physical drive or a non-revertible spare drive.
For more information, see “Transition” on page 356.
In order to run Transition:
• The spare drive must be Revertible.
• You must have an unconfigured physical drive of the same or larger capacity
to replace the spare drive.
To run Transition 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.
3. Highlight Background Activities and press Enter.
4. Highlight Transition and press Enter.