Setting the Drive Channel to Optimal

$DEV_NAME, has been selected.

To prepare for this service action, perform the following:

  • Enable the reserve Common Storage Module (CSM) or Common Expansion Module (CEM) function.

    1. Reserve the CSM/CEM for maintenance.

    2. Enter a description of the service action (setting drive channels).

    3. Select the estimated amount of time of the service action from the pull-down.

    4. Select the Reserve button.

      a) Other users will be alerted that this service action is in progress when they login.

    Before Setting Disk Drive Channels to Optimal

  • If Event Code 48.20.475 is also present indicating a Loss of Path Redundancy failure, you must fix this failure first.

  • This function should only be used if you have been linked to this procedure from Event Code of 48.5.263 and your next level of support has confirmed that this action is required.

  • The drive channel may have been set to a degraded status because of excessive I/O errors or other related problems. It is important to correct the failure as soon as possible. The drives are still operational, but a level of path redundancy has been lost.

    Setting the Drive Channel back to Optimal

    1. Confirm that the drive channel is in a degraded state: Display drive channel state.

    2. Before the drive channel can be set to optimal the Support Data files must be collected: Collect Support Data

      a) From the Collect Support Data screen select the Collect button on the right side of the screen .

      b) After successful completion the screen update will provide the name of the zip file and it's location in the host tmp directory.

    3. The file must now be sent to you next level of support for evaluation before the drive channel can be set to optimal.

    4. After the Support Data files have been evaluated the drive channel can be set to optimal: Set drive channel.

      a) From the drop down box select the correct channel to be set to optimal and select the OK button.

    5. Confirm that the drive channel is now in a optimal state: Display drive channel state.

    6. Disable the reserve CSM/CEM function.

      a) Select the Release button.