Setting the Task Information

Perform the following steps to set the adjustable task rates.

  1. In the Controller dashboard, select More Actions > Set Adjustable Task Rate or Set Task Priority depending on the firmware version.
    Figure 1. Set Adjustable Task Rate Dialog
    Figure 2. Set Task Priority Dialog
  2. Enter changes, as needed, in the following fields:
    • Depending on the firmware version, complete one of the following:

      Rebuild Rate –  Enter a number from 1 to 100 to control the rate at which the rebuild is performed on a drive when it is necessary.

      Rebuild Operating Mode Priority – Select either I/O or Rebuild to prioritize the operating mode.

    • Patrol Read Rate (%) – Enter a number from 1 to 99 to control the rate at which patrol reads are performed.

      The patrol read monitors drives to find and resolve potential problems that might cause drive failure. The higher the number, the faster the patrol read will occur (and the system I/O rate might be slower as a result).

    • BGI Rate (%) – Enter a number from 1 to 99 to control the rate at which virtual drives are initialized in the background.

      Background initialization establishes mirroring or parity for a RAID virtual drive while allowing full host access to the virtual drive. The higher the number, the faster the initialization will occur (and the system I/O rate might be slower as a result).

    • Check Consistency Rate (%) – Enter a number from 1 to 99 to control the rate at which a consistency check is performed.

      A consistency check scans the consistency data on a fault-tolerant virtual drive to determine if the data has become corrupted. The higher the number, the faster the consistency check is performed (and the system I/O rate might be slower as a result).

    • OCE Rate (%) – Enter a number from 1 to 99 to control the rate at which online capacity expansion occurs.

  3. Click Save to set the new task rates.