User manual

SuperTrak EX Series User Manual
138
Running Background Activities
To run a background activity from the Background Activities tab:
1. In Tree View, click the Subsystem icon.
2. From the dropdown menu on the Background Activities tab, choose one of
the following activities:
• Media Patrol – See “Running Media Patrol” on page 138
• Rebuild – See “Rebuilding a Disk Array” on page 168
• PDM – See “Running PDM” on page 138
• Transition – See “Transitioning a Disk Array” on page 170
• Initialization – See “Initializing a Logical Drive” on page 175
• Redundancy Check – See “Running Redundancy Check” on page 176
3. In the next screen, make the choices as requested.
4. Click the Start button.
Running Media Patrol
Media Patrol checks the magnetic media on physical drives. When it finds the
specified number of bad blocks, it will trigger PDM. See “Making Background
Activity Settings” on page 137 and “Running PDM” on page 138.
You can schedule Media Patrol to run automatically, see “Scheduling an Activity”
on page 139.
To run Media Patrol:
1. In Tree View, click the Subsystem icon.
2. From the dropdown menu on the Background Activities tab, choose Start
Media Patrol.
3. In the next screen, click the Start button.
Running PDM
Predictive Data Migration (PDM) migrates data from the suspect physical drive to
a spare disk drive, similar to Rebuilding. But unlike Rebuilding, PDM acts before
the disk drive fails and your Logical Drive goes Critical.
You an also run PDM on a specific disk array, see “Running PDM on a Disk
Array” on page 169.
The target physical drive must be the same media type, HDD or SDD, as the
other physical drives in the disk array.
Also see “Predictive Data Migration (PDM)” on page 255.