HP 9000 rp4410-4 User Service Guide, Fifth Edition - HP 9000 rp4410/4440 - Page 218

Hot-Swappable Power Supplies, Power Supply Load Order, Removing a Hot-Swappable Power Supply

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7. Replace the SCSI backplane. See "Replacing the SCSI Backplane" (page 215). 8. Replace the duplex board on the SCSI backplane. 9. Replace the I/O baseboard assembly. See "Replacing the I/O Baseboard Assembly" (page 177). 10. Replace the three chassis fan units. See "Hot-Swappable Chassis Fan Unit" (page 172). 11. Replace the processor extender board. See "Replacing the Processor Extender Board" (page 162). 12. Replace the memory extender board. See "Replacing the Memory Extender Board" (page 156). 13. Replace the front and top covers. See "Front and Top Covers" (page 152). 14. Replace the front bezel. See "Replacing the Front Bezel" (page 152). Hot-Swappable Power Supplies The HP 9000 rp4410 and rp4440 servers include one or two hot-swappable power supplies. These power supplies are located at the rear of the server. The supported configuration of the server requires a minimum of one power supply be installed. A hot-swappable power supply can be replaced using the procedures in this section when power is on or off. CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety precautions can result in damage to the server. NOTE: A hot-swappable device does not require interaction with the operating system before the device is removed from or installed into the server. The ac power to the server does not need to be powered off to remove or replace a hot-swappable power supply. Power Supply Load Order The supported configuration of the HP 9000 rp4410 or rp4440 server requires a minimum of one power supply. A second, optional hot-swappable power supply, can be installed to provide N+1 capability. The left side (viewing from the rear) hot-swappable power supply is identified as P0, the second hot-swappable power supply is identified as P1. Each hot-swappable power supply requires a separate power cord be installed in the appropriate power cord receptacle and attached to a power cord support bracket. WARNING! Be careful when installing a hot-swappable power supply. It is heavier than it appears. CAUTION: The empty hot-swappable power supply slot P1 must remain closed with the supplied metal cover in place when a second power supply is not used. The server can be damaged due to overheating if the cover does not remain in place. CAUTION: If the system is powered off, install the hot-swappable power supply into the server before attaching the new power cord at the rear of the system. Failure to observe this caution results in damage to the server. Removing a Hot-Swappable Power Supply WARNING! Be careful when removing the hot-swappable power supply. It is heavier than it appears. To remove a hot-swappable power supply, follow these steps: 218 Removing and Replacing Components

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7.
Replace the SCSI backplane. See
“Replacing the SCSI Backplane” (page 215)
.
8.
Replace the duplex board on the SCSI backplane.
9.
Replace the I/O baseboard assembly. See
“Replacing the I/O Baseboard Assembly” (page 177)
.
10.
Replace the three chassis fan units. See
“Hot-Swappable Chassis Fan Unit” (page 172)
.
11.
Replace the processor extender board. See
“Replacing the Processor Extender Board”
(page 162)
.
12.
Replace the memory extender board. See
“Replacing the Memory Extender Board” (page 156)
.
13.
Replace the front and top covers. See
“Front and Top Covers” (page 152)
.
14.
Replace the front bezel. See
“Replacing the Front Bezel” (page 152)
.
Hot-Swappable Power Supplies
The HP 9000 rp4410 and rp4440 servers include one or two hot-swappable power supplies. These
power supplies are located at the rear of the server. The supported configuration of the server
requires a minimum of one power supply be installed. A hot-swappable power supply can be
replaced using the procedures in this section when power is on or off.
CAUTION:
Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
NOTE:
A hot-swappable device does not require interaction with the operating system before
the device is removed from or installed into the server.
The ac power to the server does not need to be powered off to remove or replace a hot-swappable
power supply.
Power Supply Load Order
The supported configuration of the HP 9000 rp4410 or rp4440 server requires a minimum of one
power supply. A second, optional hot-swappable power supply, can be installed to provide N+1
capability.
The left side (viewing from the rear) hot-swappable power supply is identified as P0, the second
hot-swappable power supply is identified as P1. Each hot-swappable power supply requires a
separate power cord be installed in the appropriate power cord receptacle and attached to a
power cord support bracket.
WARNING!
Be careful when installing a hot-swappable power supply. It is heavier than it
appears.
CAUTION:
The empty hot-swappable power supply slot P1 must remain closed with the
supplied metal cover in place when a second power supply is not used. The server can be damaged
due to overheating if the cover does not remain in place.
CAUTION:
If the system is powered off, install the hot-swappable power supply into the server
before attaching the new power cord at the rear of the system. Failure to observe this caution
results in damage to the server.
Removing a Hot-Swappable Power Supply
WARNING!
Be careful when removing the hot-swappable power supply. It is heavier than it
appears.
To remove a hot-swappable power supply, follow these steps:
218
Removing and Replacing Components