Battery missing

A battery has been removed or is not present in the storage array. The Recovery Guru Details area provides specific information you will need as you follow the recovery steps.

CAUTION:
Electrostatic discharges can damage sensitive components. Always use proper antistatic protection when handling components. Touching components without using a proper ground may damage the equipment.
Important:
  • Typically, this problem occurs because the battery was removed or is not properly seated.

  • The purpose of the battery is to preserve cached data in the event of a power failure. Therefore, you should reinsert a battery as soon as possible.

  • Write caching for all volumes has been automatically suspended (if previously enabled). Write caching will be reinstated (if applicable for each volume) once you replace the battery and the replacement battery is charged to a sufficient level to support cached data in the event of a power failure.

  • The battery replacement procedure varies depending on the type of storage array you have. Some batteries are directly accessible while some batteries are inside the controller which require you to remove the controller first before servicing the battery. Consult the appropriate hardware manual if you need details on locating and replacing the battery.

  • To ensure a complete configuration restore (both disk pool and traditional volume group), it is highly recommended that storage array configuration data is backed up prior to executing this procedure. This is especially important for simplex storage arrays, and controllers that operate without the use of batteries. To save your configuration, open either the Command Line Interface (CLI), or the Script Editor from the Enterprise Management Window (EMW), and execute the following command:

    save storageArray dbmDatabase sourceLocation=onboard controller[a] contentType=all file="hostfile.zip";

Recovery Steps

Refer to the Component requiring service field in the Details area to determine which recovery steps you need to complete.

If... Then...
The component requiring service is the battery Go to Procedure for a Directly-Accessible Battery
The component requiring service is the controller that contains the battery Go to Procedure for a Storage Arrays with One Controller or Procedure for a Storage Arrays with Two Controllers
Procedure for a Directly-Accessible Battery
  1. Check the storage array for the presence of the affected battery.

    • If the battery is present, remove the battery and check the connector for damaged or dirty connectors, then go to step 2.

    • If you removed the battery, go to step 2.

  2. Reinsert the original battery or a replacement battery securely into place and wait for the storage array to detect and register the battery.

    Note:
    • The time it takes to fully charge the battery depends on the model of the battery and its current state. While it is charging, the battery will report a Charging status. Consult the appropriate hardware manual for your model.

    • If you insert a replacement battery that is Smart Battery Data-capable (only applicable if the Smart battery field in the Details area is YES), then the battery will start an initial Learn Cycle once the battery is fully charged. Depending on the model of your storage array, write caching may not be reinstated until the initial Learn Cycle is complete.

  3. 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.

Procedure for Storage Arrays with One Controller
  1. Stop all I/O from all hosts to this storage array. When the Cache Active LED on the controller is no longer active (up to 5 minutes), proceed to step 2.

    CAUTION:
    Risk of Data Loss. You must wait for the Cache Active LED to stop blinking to ensure that all cache has been written to the drives in the storage array.
  2. Click the Save As button in the Recovery Guru dialog to save the remaining steps to a file. These steps may no longer be accessible from the Recovery Guru dialog after you complete step 3.

  3. Remove the controller canister that contains the affected battery.

  4. Check the controller canister for the presence of the affected battery.

    • If the battery is present, perform the following steps:

      1. Remove the battery and check the connector for damaged or dirty connectors.

      2. Reinsert the original battery or a replacement battery securely into place.

      3. Go to step 5.

    • If you removed the battery, reinsert the original battery or a replacement battery securely into place, and then go to step 5.

  5. Insert the controller canister securely into place. After the controller appears on the Hardware tab in the AMW, go to step 6.

    Note:
    • The time it takes to fully charge the battery depends on the model of the battery and its current state. While it is charging, the battery will report a Charging status. Consult the appropriate hardware manual for your model.

    • If the battery is SBD-capable (the Smart battery field in the Details area is YES), then the battery will also start an initial Learn Cycle once the battery is fully charged. Depending on the model of your storage array, write caching may not be reinstated until the initial Learn Cycle is complete.

  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.

Procedure for Storage Arrays with Two Controllers
  1. If there are any hosts connected to this storage array that are NOT running a host-based, multi-path failover driver, stop I/O to the storage array from each of these hosts.

  2. Place the affected controller offline.

    1. Select the controller on the Hardware tab of the Array Management Window.

    2. Select the Hardware > Controller > Advanced > Place > Offline menu option.

    3. Follow the instructions in the dialog, then click the Yes button.

  3. Click the Save As button in the Recovery Guru dialog to save the remaining steps to a file. These steps may no longer be accessible from the Recovery Guru dialog after you complete step 4.

  4. Click the Recheck button to rerun the Recovery Guru. There should be an "Offline Controller" problem reported in the Summary area.

  5. Follow the "Offline Controller" recovery steps until you have removed the controller. After you have removed the controller, do not continue with the Offline Controller Recovery steps until you are instructed to do so later in this procedure.

  6. Check the controller canister for the presence of the affected battery.

    • If the battery is present, perform the following steps:

      1. Remove the battery and check the connector for damaged or dirty connectors.

      2. Reinsert the original battery or a replacement battery securely into place.

      3. Go to step 7.

    • If you removed the battery, reinsert the original battery or a replacement battery securely into place, and then go to step 7.

  7. Complete the remaining "Offline Controller" recovery steps.

    Note:
    • The time it takes to fully charge the battery depends on the model of the battery and its current state. While it is charging, the battery will report a Charging status. Consult the appropriate hardware manual for your model.

    • If the battery is SBD-capable (the Smart battery field in the Details area is YES), then the battery will also start an initial Learn Cycle once the battery is fully charged. Depending on the model of your storage array, write caching may not be reinstated until the initial Learn Cycle is complete.