Product manual

Chapter 5: Management with the CLU
209
• PDM – Migrates data from a suspect physical drive to a replacement
drive in a disk array
• Transition – Returns a revertible spare drive to spare status
• Synchronization – Checks the data integrity on disk arrays
• Initialization – Full initialization sets all data bits in the logical drive to a
specified pattern, such as all zeros
• Redundancy Check – Checks, reports and can correct data
inconsistencies in logical drives
The rates are defined as follows:
• Low – Fewer resources to activity, more to data read/write.
• Medium – Balance of resources to activity and data read/write.
• High – More resources to activity, fewer to data read/write.
5. Highlight the following PDM trigger settings and press the backspace key to
erase the current value:
• BBM Threshold – 1 to 2048 reassigned blocks
• Media Patrol Threshold – 1 to 2048 error blocks
6. Press Ctrl-A to save your settings.