Cisco Systems UCSEZINFRACHSS manual Removing a Power Supply

Installing and Removing Components

Removing a Power Supply

Note Both grids in a power redundant system should have the same number of power supplies. If your system is configured for grid redundancy, slots 1 and 2 are assigned to grid 1 and slots 3 and 4 are assigned to grid 2. If there are only two power supplies in a redundant- mode chassis, they should be in slots 1 and 3. This would be a very unusual configuration, with a single B200 blade server in the chassis. A larger configuration would require two power supplies per grid. Slot and cord connection numbering is shown below.

Figure 37: Power Supply Bay and Connector Numbering (AC Version Shown)

Front

Server Slot 1

Server Slot 3

Server Slot 5

Server Slot 7

PS 1 PS 2

Server Slot 2

Server Slot 4

Server Slot 6

Server Slot 8

PS 3 PS 4

		Fan 1	Fan 2			Fan 3	Fan 4
	Module Slot 1			Module Slot 2
		Fan 5	Fan 6			Fan 7	Fan 8
	I/O			I/O
		Connector	Connector		Connector		Connector
Rear		PS 4	PS 3		PS 2		PS 1

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Removing a Power Supply

Caution If you are using the Cisco UCS 5108 server chassis with one power supply (this is only supported in earlier versions of the system software), removing the power supply will cause the servers and chassis to shut down. If you are using more than two power supplies, and you remove one of them, the servers continue to operate as long as the other power supplies are sufficient to meet the power requirements of the number of servers in the chassis.

Procedure

Step 1 Loosen the captive screw on the front of the power supply.

Step 2 Lift up the power supply’s handle to unseat the power supply.

Step 3 Using the lever, pull the power supply from its slot. Place your other hand under the power supply to support it while you slide it out of the chassis.

Step 4 Install a blank power supply filler panel (N20-CBLKP) if the power supply bay is to remain empty.

Cisco UCS 5108 Server Chassis Installation Guide

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