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3. Push the power-supply handle to the left and then down to release the power
4. Pull the power supply all the way out of the power-supply bay.
5. Install a new power supply by following the instructions in "Installing a power
Using Y power-cord connectors for power backup
When you have multiple servers with redundant power supplies, use Y power-cords
to provide connection to the backup power-supply (Back-UPS) units. The Back-UPS
unit provides temporary power to the connected devices if there is a power outage
in the network. The Back-UPS unit must be connected correctly to ensure optimum
power backup to the servers.
Connect the Y power cord to two power supplies, in two different servers, then
connect the other end of the Y power cord to a Back-UPS unit. The following
illustration shows the proper connection between the servers with the Y power-cord.
This connection method provides the server with two different and independent
backup power sources: one Back-UPS unit for power supply 1 on both servers and
another Back-UPS unit for power supply 2 (redundant power supply) on both
servers.
If you have other options to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 44.
40
IBM xSeries 336 Type 8837: Option Installation Guide
supply.
supply" on page 38, or reinstall the blank cover to keep the server from
overheating.
Server A
Server B
Power supply 2
Power supply 1
Power supply 2
Power supply 1
Y power cords
Backup
power supply
power supply
Backup
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