Mixed drive types - out of compliance

The Mixed Drive Types feature is Out of Compliance.

This problem can occur in the following scenarios:

The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

CAUTION:
Electrostatic discharge can damage sensitive components. Always use proper antistatic protection when handling components. Touching components without using a proper ground may damage the equipment.
Important:
  • This problem can occur if you disable a feature pack key. Disabling a feature pack key can result in multiple individual features transitioning to an Out of Compliance state since you may have globally lowered the limits supported by the storage array. If there is a "Feature Pack - Out of Compliance" problem in the Summary area, complete those recovery steps first. If this problem still appears after you complete the recovery steps for the "Feature Pack - Out of Compliance" problem, then proceed with the recovery steps below.

  • Scenario 1 typically happens because you performed one of the following actions:

    • Disabled the Mixed Drive Types feature while mixed drive types are still present

    • Enabled or disabled a feature pack resulting in the storage array not supporting Mixed Drive Types.

    • Imported drives of a different technology from those already residing in this storage array (for example, you add SATA drives to a storage array that previously contained only Fibre Channel drives) while the Mixed Drive Types feature was disabled

  • Scenario 2 happens because the controllers were not previously attached to drives, so the controllers 'adopt' the configuration database of the first drive they encounter. When drives are adopted by the controllers, the configuration database contained on the drives (which includes all of the information about the previous storage array, including the enabled/disabled information of features) is used by the controllers. Therefore, the information in the configuration database shows that the Mixed Drive Types feature is enabled, but the feature is either disabled on this storage array or not supported by the controllers. If the controllers had been previously attached to drives and then another set of drives are added, then the new drives would be 'imported' (overwriting the configuration database) rather than 'adopted' since the controller is using the configuration database of the existing drives.

  • For Scenario 1, you can fix this problem in two ways:

    • You can enable the Mixed Drive Types feature key if it is supported by this storage array

    • You can remove the drives you recently inserted into the storage array, so that there is only one type of drive in the storage array

  • For Scenario 2, you can fix this problem in two ways:

    • You can disable the Mixed Drive Types feature once there is only one drive type connected to the controllers

    • You can enable the Mixed Drive Types feature key if it is supported by this storage array

  • While this feature is in an Out of Compliance state, you will NOT be able to:

    • Create new configuration objects (automatically or manually) - such as volumes, snapshots, mirror relationships, volume copy pairs, and storage partitions

    • Assign hot spares

    • Change the segment size of a volume

    • Change the RAID level of a volume group

    • Expand the capacity of a disk pool, volume group or volume

Recovery Steps

Scenario 1
  1. If... Then...
    You want to resolve this problem by enabling the Mixed Drive Types feature key Go to step 2.
    You want to resolve this problem by removing drives until all drives are of the same type Go to step 4.
  2. Select the Storage Array > Premium Features menu option in the Array Management Window.

    If... Then...
    The Mixed Drive Types feature appears in this dialog (regardless of status) A feature key file is needed to enable the feature.
    • If the feature has already been enabled at any time for this storage array AND you have the feature key file, go to step 3.

    • If the feature has not been enabled for this storage array OR the feature has been enabled, but you do not have the feature key file, perform the following steps:

      1. Identify the feature key identifier from the "Premium Features and Feature Pack Information" dialog.

      2. Contact your Technical Support Representative to request a feature key file.

      3. After you have the feature key file, go to step 3.

    The Mixed Drive Types feature does NOT appear in this dialog Your storage array cannot support this feature.

    It is possible that you can upgrade to a feature pack that will allow support the feature. Contact your Technical Support Representative to see if your storage array can be upgraded to a different feature pack.

  3. Click the Use Key File button to use the feature key file and enable the premium feature, and then go to step 6.

  4. If... Then...
    The drives you inserted do not have any disk pool or volume group data Go to step 5.
    The drives you inserted have disk pool data, but importing disk pools is not an allowed operation Go to step 5.
    The drives you inserted have volume group data but you have NOT yet imported the volume groups into this array (the volume groups appear as Contingent volumes on the Storage and Copy Services tab) Go to step 5.
    The drives you inserted have volume group data and you have already completed the Import operation for the volume groups into the storage array.
    1. On the Storage and Copy Services tab in the AMW, highlight a volume group that resides on the drives you recently imported, and then select the Storage > Volume Group > Advanced > Export menu option.

      Follow the instructions in the "Export Volume Group" dialog to properly export the volume group from the storage array.

    2. Repeat step a for every volume group that resides on the drives you recently imported until all the volume groups on the drives have been exported.

    3. Go to step 5.

  5. Remove the drives or disconnect the drive trays that you recently inserted that contain the different type of drives.

  6. Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, contact your Technical Support Representative.

Scenario 2
  1. If... Then...
    You want to use multiple drive types in this array (you want to enable the Mixed Drive Types feature) Go to step 2.
    You DO NOT want to use multiple drive types in this array (you want to disable the Mixed Drive Types feature) Go to step 4.
  2. Select the Storage Array > Premium Features menu option in the Array Management Window.

    If... Then...
    The Mixed Drive Types feature appears in this dialog (regardless of status) A feature key file is needed to enable the feature.
    • If the feature has already been enabled at any time for this storage array and you have the feature key file, go to step 3

    • If the feature has not been enabled for this storage array or the feature has been enabled, but you do not have the feature key file, perform the following steps:
      1. Identify the feature key identifier from the "Premium Features and Feature Pack Information" dialog.

      2. Contact your Technical Support Representative to request a feature key file.

      3. After you have the feature key file, go to step 3.

    The Mixed Drive Types feature does NOT appear in this dialog Your storage array cannot support this feature.

    It is possible that you can upgrade to a feature pack that will allow support the feature. Contact your Technical Support Representative to see if your storage array can be upgraded to a different feature pack.

  3. Click the Use Key File button to use the feature key file and enable the premium feature, and then go to step 8.

  4. If... Then...
    There are currently different drive types connected to the controllers Go to step 5.
    All of the drives connected to the controllers are the same drive type Go to step 7.
  5. If... Then...
    The drives you inserted do not have any disk pool or volume group data Go to step 6.
    The drives you inserted have disk pool data, but importing disk pools is not an allowed operation Go to step 6.
    The drives you inserted have volume group data but you have NOT yet imported the volume groups into this array (the volume groups appear as Contingent volumes on the Storage and Copy Services tab) Go to step 6.
    The drives you inserted have volume group data
    1. On the Storage and Copy Services tab in the AMW, highlight a volume group that resides on the drives you recently imported, and then select the Storage > Volume Group > Advanced > Export menu option.

      Follow the instructions in the Export Volume Group dialog to properly export the volume group from the storage array.

    2. Repeat step a for every volume group that resides on the drives you recently imported until all the volume groups on the drives have been exported.

    3. Go to step 6.

  6. Remove the drives or disconnect the drive trays that you recently inserted that contain the different type of drives.

  7. Disable the Mixed Drive Types feature.
    1. From the AMW, select the Storage Array > Premium Features menu option.

    2. Select the Mixed Drive Types feature from the list.

    3. Click the Disable button.

  8. Click the Recheck button to rerun the Recovery Guru. The failure should no longer appear in the Summary area. If the failure appears again, contact your Technical Support Representative.