HP StorageWorks 20 - Modular Smart Array Spécifications télécharger pdf (Page 17)

Removal and Replacement Procedures

HP StorageWorks Modular Smart Array 500 System Maintenance and Service Guide 2-9

HP StorageWorks Modular Smart Array 500 Controller

When the MSA500 controller in a single-controller system fails, HP recommends that you

migrate the cache module to a new controller. Battery-backed cached data in a failed

controller can remain intact for up to 3 days with 256-MB modules or up to 4 days with

128-MB modules.

CAUTION: Failure to migrate the cache to a new controller and flush the data can result in

loss of the data that is written in the cache but was unable to be written to the hard drives

before controller failure.

To remove the component:

To restore the data:

1. Remove the cache modules from the failed controller. Refer to “Battery-Backed Cache

Module” in this chapter.

2. Install the cache modules in the new controller.

3. Install the new controller and allow the cache to write the stored data.

To replace the controller:

1. Slide the controller into the bay until it locks into place.

2. Close the lever.

3. Verify that the controller is seated properly by observing the controller LEDs. When

seated properly, the LEDs illuminate when the system is powered.

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HP StorageWorks 20 - Modular Smart Array Spécifications Page 17