Hewlett-Packard AD510A - StorageWorks Modular Smart Array 1500 cs 2U Fibre Channel SAN Attach Controller Shelf Hard Drive Maintenance And Service Manual
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Brand: HP
Category: Carrying Case , Network Hardware , Speaker System , Storage , Switch
Type: Maintenance and service manual
Model: HP AD510A - StorageWorks Modular Smart Array 1500 cs 2U Fibre Channel SAN Attach Controller Shelf Hard Drive , HP AE326A - StorageWorks Modular Smart Array 1500 SAN SATA Starter , HP StorageWorks 1500cs - Modular Smart Array
Pages: 120 (6.76 Mb)
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Removing the con
troller cache module
If your system i
s equipped with a single controller, and you must replace the controller cache:
• You must schedule a maintenance window and remove power from the system to perform the service.
If your system is equipped with two controllers:
• and you are repl
acing a cache module with another module of the same size, you can remove one of
the controllers and replace the module on that controller while the system is running.
• and you are replacing a cache module with a module of a different size, you must schedule a
maintenance window and remove power from the system to then change the cache module on
bothcontrollersatthesametime. Thememorysizeofthecachemodulesmustbethesameon
both control
lers.
IMPORTANT:
Replacement controllers include a new cache module. Remove the new module from the replacement
controller and replace it with the cache module from the failed controller. Using the same cache module
completes di
sk writes trapped in the controller cache.
1. Remove the controller from the chassis as instructed in Removing the controller.
2. Locate the controller cover clips on the rear, lower left, and right sides of the module by holding the
controller upright with the latch handle facing you.
3. Unlatch the controller cover clips (1) on the rear of the controller and raise the cover (2).
4. Simultaneously unlatch the clips that are holding the controller cache in place (3).
5. Carefully pull the cache module away from the controller board (4).
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Removing the controller cache battery pack
The controller cache module has two rechargeable and replaceable Nickel Metal Hydride (NiMH)
battery packs. Under normal operating conditions, these should last for three years before replacement is
necessary. They are continuously recharged via a trickle charging process whenever the MSA storage
system is powered on.
Battery packs protect data on the controller cache module against equipment failure or power outage for
up to four continuous days.
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Customer replaceable components