Recovering data from the battery-backed write cache
If the workstation blade fails, use the following procedure to recover data temporarily stored in the BBWC.
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CAUTION: Before starting this procedure, read the information about protecting against electrostatic discharge. |
- Perform one of the following:
- Set up a recovery workstation blade station using an identical workstation blade model. Do not install any internal drives or BBWC in this workstation blade. (HP recommends this option.)
- Find a workstation blade that has enough empty drive bays to accommodate all the drives from the failed workstation blade and that meets all the other requirements for drive and array migration.
- Power down the failed workstation blade. If any data is stored in the cache module, a green LED on the module flashes every 2 seconds.
CAUTION: Do not detach the cable that connects the battery pack to the cache module. Detaching the cable causes any unsaved data in the cache module to be lost.
- Transfer the hard drives from the failed workstation blade to the recovery workstation blade station.
- Perform one of the following:
- If the array controller has failed, remove the cache module and battery pack from the failed array controller, and install the cache module and battery pack on an array controller in the recovery workstation blade.
- If the workstation blade has failed, remove the controller, cache module, and battery pack from the failed workstation blade, and install the controller, cache module, and battery pack in the recovery workstation blade.
- Power up the recovery workstation blade. A 1759 POST message is displayed, stating that valid data was flushed from the cache. This data is now stored on the drives in the recovery workstation blade. You can now transfer the drives (and controller, if one was used) to another workstation blade.