Lenovo ThinkServer RS140 - Manual (Page 80)

2. If the server is installed in a rack cabinet, remove the server from the rack cabinet and place it on a flat,
clean, and static-protective surface.
3. Remove the server cover. See “Removing the server cover” on page 55.
4. Locate the ThinkServer RAID 500 Adapter, which is installed on the riser card assembly.
5. Remove the TR 500 Key from the ThinkServer RAID 500 Adapter. If necessary, you can remove the
ThinkServer RAID 500 Adapter first, remove the TR 500 Key from it, and then reinstall the ThinkServer
RAID 500 Adapter. See “Installing or removing the RAID card” on page 62.
Note: Carefully handle the TR 500 Key by its edges.
Figure 38. Removing the TR 500 Key
6. If you are instructed to return the old TR 500 Key, follow all packaging instructions and use any
packaging materials that are supplied to you for shipping.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the removal procedure, go to “Completing the parts replacement” on page 106. As the
hardware RAID 5 is not available without the TR 500 Key, you might need to reconfigure RAID for your
server. Refer to the MegaRAID SAS Software User Guide on the documentation DVD that comes with
your server for information about how to configure the hardware RAID.
Installing or removing the ThinkServer RAID 700 Battery
This topic provides instructions on how to install or remove the ThinkServer RAID 700 Battery (hereinafter
referred to as the TR 700 Battery).
The TR 700 Battery protects the integrity of the cached data on the ThinkServer RAID 700 Adapter by
providing backup power up to 72 hours in the case of a complete ac power failure or a brief power outage.
It has built-in functionality to charge the battery pack automatically and to communicate battery status
information (such as voltage, temperature, and current) to your server. It also provides an inexpensive
alternative to using an uninterruptible power supply, and a second level of fault tolerance when used with an
uninterruptible power supply.
The temperature of the TR 700 Battery is generally 15-20°C (59-68°F) higher than the ambient temperature
during fast charge. Therefore, to complete a recharge cycle, the ambient temperature should be lower
68 ThinkServer RS140 User Guide and Hardware Maintenance Manual