Dell PowerEdge 6850 - Manual (Page 19)

SAS Information Update
17
Installing a 2.5-Inch SAS Backplane
1 Install the SAS backplane:
a Carefully lower the backplane into the system as shown in Figure 1-9, angling the top of the
backplane slightly toward the back of the system. Be careful to avoid damaging components
on the face of the board.
b Slide the retention slots on the backplane over the retention hooks on the chassis.
c Slide the backplane downward until the blue retention tab snaps into place.
2 Connect the SAS and backplane power cables to the back of the SAS backplane.
Secure the SAS cable(s) in the clip that is attached to the fan-3 air guard. See Figure 1-8.
3 Install the SAS hard drives in their original locations. See "Installing a Hot-Plug Hard Drive"
on page 10.
4 Install the optical drive/diskette drive carrier.
Slide the drive carrier into its drive bay and press in the release latch. See the Installation and
Troubleshooting Guide.
5 Install the cooling shroud. See "Installing the Cooling Shroud" the Installation and Troubleshooting
Guide.
6 Close the system. See "Closing the System" in the Installation and Troubleshooting Guide.
7 Reconnect the system to its electrical outlet and turn the system on, including any attached
peripherals.
SAS 2.5-Inch Peripheral Interposer Board
In addition to the backplane, systems with 2.5-inch drives also have a peripheral interposer board, which
contains some of the connectors that are on the 3.5-inch board and a backplane power connector.
Peripheral Interposer Board Connectors
Figure 1-10 presents a front view of the peripheral interposer board.