VTrak E-Class Product Manual - Promise Technology, Inc.

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Chapter 5: Management with the CLU
• PDM – Looks for bad blocks on the physical drives of disk arrays
• Transition – Returns a revertible spare drive to spare status
• Synchronization – Checks the data integrity on disk arrays
• Initialization – Sets all data bits in the logical drive to zero
• 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:
• Reassigned Block Threshold – 1 to 512 blocks
• Error Block Threshold – 1 to 1024 blocks
6. Press Ctrl-A to save your settings.