Battery; Servicing Notes; Indicator Lights On The Fastt900 Storage Server Bezel - IBM TotalStorageFAStT900 User Manual

5. Using Figure 35 as a guide, check the controller indicator lights.
Figure 35. Indicator lights on the FAStT900 Storage Server bezel
6. Use the storage-management software to check the status of both controllers. If
7. Reinsert the controller CRU. Then, if there are no error messages or controller
8. Replace the FAStT900 Storage Server bezel, as shown in Figure 22 on

Battery

The battery CRU contains rechargeable batteries and a battery-charger board. The
battery CRU plugs into the front of the FAStT900 Storage Server (see Figure 36 on
page 42) where it provides backup power to the cache memory in both controllers.
During a power outage, a properly charged battery CRU maintains electrical current
to the controllers for up to five days with 1 Gb cache memory installed. All data
stored in memory is preserved as long as the batteries can sustain power to the
cache memory. However, the battery does not provide power to the rest of the
system during a power outage. Therefore, the system is not able to write data to
hard disk drives without a backup power source.

Servicing notes

Consider the following factors when you service the battery in the FAStT900
Storage Server:
v The battery has a three-year life expectancy. Replace the battery every three
v The service label on the battery provides a blank line for recording the date on
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IBM TotalStorageFAStT900 Fibre Channel Storage Server: User's Guide
b. Using the handles, slide the controller into the slot until the back edge of
both handles hooks onto the frame.
c. Close both handles and snap into place.
v If the green power indicator light is on and the amber fault indicator light is
off, go to Step 8.
v If the green power indicator light remains off or the fault indicator light is on
after a few seconds, make sure that the controller CRU is locked into place. If
the fault indicator light remains on, go to Step 6.
applicable, perform the recovery procedures required by the software. If this
corrects the fault and the FAStT900 Storage Server is operating without error,
go to Step 8. If not, go to Step 7.
faults, go to Step 8. If there is still a problem, call for service.
page 17.
years or whenever it fails to hold a charge. Operating the FAStT900 Storage
Server in an unsupported environment (above 35° C or 95° F) lowers the life
expectancy of the battery.
which the battery was last serviced (see Figure 37 on page 43). Check this label