Step 12. Reconnect all of the cables to the peripheral devices.
Step 13. Restart the server. Make sure that it starts correctly and recognizes the newly installed device, and
make sure that no error LEDs are lit.
Installing a 1400-watt or 900-watt hot-swap power supply
Use this information for installation instructions and notes that you need to consider when you install 1400-
watt or 900-watt ac hot-swap power supplies in the server.
Note: This information and instructions apply to both the 4-socket and the 8-socket servers.
The following list describes information that you must consider when you install a hot-swap 1400-watt or
900-watt ac hot-swap in the server:
• If you install additional power supplies or different power supplies, place the power rating label that comes
with the new power supply option on the rear of the server.
• Four 900-watt or four 1400-watt hot-swap power supplies fed from a 110 V input source provides N+N
redundancy support for limited configurations (per 4-socket node).
• Four 1400-watt hot-swap power supplies fed from a 220 V ac input source provides N+N redundancy
support for a full configuration (per 4-socket node).
• The power supply bays are divided into two power domains. Power supply bays 1 and 3 are in power
domain A and power supply bays 2 and 4 are in power domain B.
• To confirm that the server supports the power supply that you are installing, see
http://www.lenovo.com/
serverproven/
.
• For more notes and information that you must consider when you install power supplies in the server, see
“Installing power supplies” on page 100.
• The following table lists the population sequence for the supported power supply configurations. These
configurations apply for each 4-socket node of the 8-socket server.
Table 29. Population sequence for the supported power supply configurations for each 4-socket node
Power supply configuration
Notes:
1 power supply The power supply should be installed in bay 3. This
configuration does not support power supply
redundancy. A power supply filler must be installed in
bays 1, 2, and 4.
2 power supplies The power supplies should be installed in bays 2 and 3
with each supply on separate power feeds for feed
redundancy. Both power supplies must be the same
type (that is, the same wattage, ac power supplies, or dc
power supplies). A power supply filler must be installed
in bays 1 and 4.
4 power supplies Power supplies 1, 2, 3, and 4 must be the same input
type (that is, all ac power supplies or all dc power
supplies).
• If you mix 900-watt and 1400-watt power supplies in the server, the power supplies must be installed as
listed below:
Table 30. Population sequence when mixing 900-watt and 1400-watt ac power supplies in a four-power supply
configuration (per 4-socket node)
Note: If you are using two power input feeds, connect power supplies 1 and 3 to input feed A and power
supplies 2 and 4 to input feed B.
Chapter 2. Installing optional devices 107
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