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106
Promise
Technology
Pegasus32 Series
PDM
Predictive Data Migration (PDM) is the migration of data from the suspect disk drive to a spare drive,
similar to rebuilding a disk array. But unlike rebuilding, PDM automatically copies your data to a spare
drive
before
the drive fails and your logical drive goes Critical.
PDM can be triggered automatically by Media Patrol. Also see ”Running PDM on a Logical Drive” on
Making PDM Settings
To make PDM settings:
1. Click on the
Background Activities icon.
2. Click the
Settings
button.
3. Make the following settings are required:
•
Click the
PDM Rate
dropdown menu and choose a rate:
•
Low
– Fewer system resources to PDM, more to data read/write operations.
•
Medium
– Balances system resources between PDM and data read/write operations.
•
High
– More system resources to PDM, fewer to data read/write operations.
• Highlight the current values in the block threshold fields and input new values.
Reassigned block threshold range is 1 to 512 blocks. Error block threshold range is 1 to
2048 blocks.
4. Click the
Confirm
button.
5. Click the X icon to close the background activities panel.
PDM
Summary of Contents for Pegasus32 R4
Page 1: ...Pegasus32 R4 R6 R8 Product Manual Version 1 1 2020 Promise Technology Inc All Rights Reserved ...
Page 9: ...ix About this guide Pegasus32 Product Manual WARNING WARNING ...
Page 101: ...85 Managing the Pegasus32 Pegasus32 Product Manual Controller Settings ...
Page 201: ...185 Troubleshooting Pegasus32 Product Manual View NVRAM Events ...