Promise Technology VTrack M-Class M200f, Product Manual

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Chapter 4: Management with WebPAM PROe
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Logical Drive PDM
Predictive Data Migration (PDM) is the migration of data from the suspect disk
drive to a spare disk drive, similar to Rebuilding a Logical Drive. But unlike
Rebuilding, PDM constantly monitors your disk drives, and automatically copies
your data to a spare disk drive
before the disk drive fails and your Logical Drive
goes Critical. See “Predictive Data Migration (PDM)” on page 257.
To run PDM, do the following:
1. Click the Subsystem icon in Tree View.
2. Click on the Background Activities tab in Management View.
3. From the Background Activities dropdown menu, select Start PDM .
4. From the Source Physical Drive dropdown menu, select a Source disk array.
5. From the Target Physical Drive dropdown menu, select a Target physical
drive.
6. Click on the Submit button.
A PDM link appears on the Background Activities tab and the percent completed
displays.
To set PDM priority, see “Change Background Settings” on page 71.
Logical Drive Check Table
The Logical Drive–Check Table tab enables you to view error tables. Use this
information to evaluate the integrity of the logical drive and to determine whether
corrective action is needed. To View the tables:
1. Click the Subsystem icon in Tree View.
2. Click on the Disk Arrays icon.
3. Click on the Disk Array icon.
4. Click on the Logical Drives icon
5. Click on the Logical Drive icon.
6. Click the Check Table tab in Management view.
7. Click the option for the table you want to see.
The default is All tables.
If there are entries, they are listed as follows:
• Entry Number – A number assigned to each block of entry.
• Table Type – Read Check, Write Check or Inconsistent Block (see
below).
• Start Logical Block Address – LBA of the first block for this entry.