VTrak M-Class Product Manual
•Medium allocates a balance of system resources to the function and data read/write operations.
•High allocates more system resources to the function and fewer to data read/write operations.
5.Set the Reassigned Block threshold.
When an error occurs in a physical drive, the directions to the block containing error are reassigned. When the number of reassigned blocks exceeds the threshold, PDM is triggered.
6.Set the Error Block threshold.
When an error occurs in the data or the physical media in a disk drive, the block is marked and added to the block error count. When the number of error blocks exceeds the threshold, PDM is triggered.
7.Check the boxes to enable Media Patrol.
For more information, see “Media Patrol” on page 257.
8.Check the boxes to enable Auto Rebuild.
Auto Rebuild enables rebuilding of a disk array when a suitable hot spare drive is available. For more information, see “Hot Spare Drive(s)” on page 253.
9.When you are done, click the Submit button.
Scheduler
The
Scheduled activities include:
•Media Patrol. See “Physical Drive Media Patrol” on page 128
•Redundancy Check. See “Logical Drive Redundancy Check” on page 146
•Battery Reconditioning. See “Battery Recondition” on page 121
•Spare Drive Check. See “Spare Check – All Spare Drives” on page 152
View Scheduled Activities
To view scheduled activities for this subsystem:
1.Click on the Subsystem 
icon Tree View.
2.Click on the Scheduler tab in Management View.
Schedule an Activity
To set a scheduled activity for this subsystem:
1.Click on the Subsystem 
icon Tree View.
2.Click on the Scheduler tab in Management View.
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