Lenovo THINKSERVER 3797 - Manual (Page 212)

To remove the SAS controller from a SAS riser card, complete the following steps:
1. Read the safety information that begins on page 3.
2. Turn off the server and peripheral devices and disconnect all power cords and
external cables (see “Turning off the server” on page 53).
3. Remove the cover (see “Removing the cover” on page 159).
4. Locate the SAS riser-card and controller assembly near the left front corner of
the server.
5. Disconnect the SAS signal cables from the connectors on the SAS controller.
6. Remove the SAS controller assembly, which includes the SAS riser card, from
the server (see “Removing the SAS riser card and controller assembly” on page
200).
12-drive-capable server model:
1 SAS riser card
2 SAS controller
3 Release tab
Tape-enabled server model:
7. Press down the retention bracket 2 and pull the SAS controller horizontally
1 out of the connector on the SAS riser card 3 .
8. If you are replacing the SAS controller with another supported SAS controller,
continue with “Installing a SAS controller on the SAS riser card.”
Installing a SAS controller on the SAS riser card
Important: If you have installed a 4-disk-drive optional expansion device in a
12-drive-capable server, the SAS controller is installed in a PCI riser-card assembly
and is installed and removed the same way as any other PCI adapter. Do not use
204 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Hardware Maintenance Manual