Lenovo 70B4, User Manual And Hardware Maintenance Manual

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7. 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 205. Because the
hardware RAID 5 and 50 levels are not available without the TR 500 Key, you might need to reconfigure
RAID for your server. For information about how to configure the hardware RAID, refer to the
MegaRAID
SAS Software User Guide on the documentation DVD that comes with your server.
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) if your server has a ThinkServer RAID 700 Adapter installed.
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 automatically charge the battery pack 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 in
conjunction 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
than 55°C (131°F). If the ambient temperature exceeds 55°C (131°F), the recharge cycle will terminate
prematurely, thus preventing the TR 700 Battery from reaching a fully charged state. A recharge cycle lasts
at least six hours under normal operating conditions.
Attention: It is recommended that you replace the TR 700 Battery annually or after 500 recharging cycles,
whichever comes first.
Installing the TR 700 Battery
Attention: Do not open your server or attempt any repair before reading and understanding “Safety information”
on page iii and “Guidelines” on page 83.
This topic provides instructions on how to install the TR 700 Battery on a ThinkServer RAID 700 Adapter if
your server has one installed.
Before you begin, print all the related instructions or ensure that you can view the PDF version on another
computer for reference.
Note: Use any documentation that comes with the TR 700 Battery and follow those instructions in addition
to the instructions in this topic.
To install the TR 700 Battery, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Remove the server cover. See “Removing the server cover” on page 85.
3. Lay the server on its side for easier operation.
4. If a PCI card bracket assembly is installed in your server, remove the PCI card bracket assembly. See
“Removing and reinstalling the PCI card bracket assembly” on page 89.
5. Locate and remove the ThinkServer RAID 700 Adapter, which is a kind of RAID card. See “Installing or
removing the RAID card” on page 104.
Chapter 6
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Installing, removing, or replacing hardware
115