Upgrading Your System 4-67
Adding the Optional DEU 2-Channel SCSIBoard
This subsection describes how to install the optional 2-Channel SCSI board into
the DEU.
The DEU must be removed from the tower cabinet before the 2-Channel SCSI
Interface Board can be installed.
!
WARNING
To reduce the risk of personal injury or damage to the
equipment, a minimum of two people MUST lift the DEU in
and out the tower cabinet. The DEU weighs 50 pounds (22.6
kilograms
!
CAUTION
To make the DEU lighter and more manageable and to
protect your hard disk drives from damage, consider
removing the hard disk drives in the DEU before removing
the DEU from the tower cabinet.
1. Observe the safety and ESD precautions listed at the beginning of this
chapter.
2. Open the front door to the tower cabinet.
3. Terminate all applications and power down the BSU connected to the DEU.
Powering down the BSU will also power down the DEU.
4. Tag and remove all cables connected to the DEU.
5. Remove the screws securing the DEU to the front of the tower cabinet (see
Figure 4-73).
Figure 4-73. Removing the DEU from the Tower Cabinet