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HP ProLiant ML110 G7 Server User Manual

Page 39

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Hardware options installation 39

CAUTION:

After the server is powered down, wait 15 seconds and then check the amber LED

before unplugging the cable from the cache module. If the amber LED blinks after 15 seconds, do

not remove the cable from the cache module. The cache module is backing up data, and data is
lost if the cable is detached.

IMPORTANT:

The battery pack might have a low charge when installed. In this case, a POST

error message is displayed when the server is powered up, indicating that the battery pack is

temporarily disabled. No action is necessary on your part. The internal circuitry automatically

recharges the batteries and enables the battery pack. This process might take up to four hours.

During this time, the cache module functions properly, but without the performance advantage of
the battery pack.

CAUTION:

The cache module connector does not use the industry-standard DDR3 mini-DIMM

pinout. Do not use the controller with cache modules designed for other controller models,

because the controller can malfunction and you can lose data. Also, do not transfer this cache

module to an unsupported controller model, because you can lose data.

NOTE:

The data protection and the time limit also apply if a power outage occurs. When power

is restored to the system, an initialization process writes the preserved data to the hard drives.

CAUTION:

In systems that use external data storage, be sure that the server is the first unit to be

powered down and the last to be powered back up. Taking this precaution ensures that the system
does not erroneously mark the drives as failed when the server is powered up.

To install the component:

1.

Back up all server data.

2.

Close all applications.

3.

Power down the server (on page

19

).

4.

Remove all power:

a.

Disconnect each power cord from the power source.

b.

Disconnect each power cord from the server.

5.

Unlock the tower bezel ("

Unlock and open the tower bezel

" on page

20

).

6.

Remove the access panel (on page

21

).

7.

Remove the air baffle (on page

22

).

8.

Open the expansion slot cover retainer.