Install a PDU
5.
Ensure that you have switched off every PDU circuit breaker on the replacement
PDU.
See Step 6 of “Prepare a PDU for Removal” on page 254.
6.
Locate the replacement PDU input lead cord connectors.
Depending on how you routed the cords when you installed the PDUs, route these cords either
out the bottom of the rack or out the top.
7.
Connect the replacement PDU power lead cords to the facility AC power source.
If your rack contains two PDUs, ensure that each PDU is connected to different AC power
source circuits, and reinstall the jumper cords in the same locations from which you removed
them. For information about the installation locations for the jumper cords, refer to the SPARC
M8 and SPARC M7 Servers Installation Guide.
8.
Turn breakers on in the following sequence.
■
For SPARC M8-8 or SPARC M7-8 server, right PDU (PDU-B):
■
If one SPARC M8-8 or SPARC M7-8 server is installed: R8, R7, R6
■
If two SPARC M8-8 or SPARC M7-8 servers are installed: R8, R7, R6; R5, R4, R3
■
If three SPARC M8-8 or SPARC M7-8 servers are installed: R8, R7, R6; R5, R4, R3;
R2, R1, R0
■
For SPARC M8-8 or SPARC M7-8 server, left PDU (PDU-A):
■
If one SPARC M7-8 server is installed: L2, L1, L0
■
If two SPARC M8-8 or SPARC M7-8 servers are installed: L2, L1, L0; L5, L4, L3
■
If three SPARC M8-8 or SPARC M7-8 servers are installed: L2, L1, L0; L5, L4, L3; L8,
L7,L6
■
For a SPARC M7-16 server, right PDU (PDU-B):
■
R4, R5
■
R0, R1, R2
■
R6, R7, R8
■
For a SPARC M7-16 server, left PDU (PDU-A):
■
L5, L4
■
L8, L7, L6
■
L2, L1, L0
where R indicates the right PDU from the rear of the server (PDU B), L indicates the left PDU
from the rear of the server (PDU A), and the number represents the PDU group number.
266 SPARC M8 and SPARC M7 Servers Service Manual • September 2017
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