- IBM switch Users and Maintenance Guide

fan CRU continues to operate. You must install both fan CRUs to maintain
proper cooling within the storage server, even if one fan CRU is not
operational.
Hot-swap power supplies
The DS4100 base storage server comes with two hot-swap power supplies.
You must install both power supplies to maintain proper cooling.
The DS4100 single-controller storage server storage server comes with one
power supply.
Attention: You will lose access to data if you attempt to hot-swap the
power supply in a DS4100 single-controller storage server.
Interface ports and switches
Figure 6 shows the ports and switches on the back of the DS4100 base storage
server.
Figure 7 on page 12 shows the ports and switches on the back of the DS4100
single-controller storage server.
Note: The DS4100 single-controller storage server has a controller blank instead of
a second RAID controller and a power supply blank instead of a second
power supply.
Host port 1
Host port 2
Host port 2
Ethernet
Ethernet
Expansion port
Expansion port
AC power
connector
AC power
switch
AC power
switch
AC power
connector
Serial port Serial port
Host port 1
Server ID
switch
1 Gbps/
2 Gbps
switch
f10ug022
Figure 6. Interface ports and switches for DS4100 base storage server
Chapter 1. Introduction 11