Installing The Sas Host Adapter Card (If Required); Connecting The Sas Interface Cable; Example Of Connecting One Sas Device To The Server; Example Of Connecting The Sas Device To Two Servers - IBM TS2280 Setup, Operator, And Service Manual

Installing the SAS host adapter card (if required)

If no other devices are attached to your server, a SAS host adapter might need to be installed in the
server. To install an adapter, refer to the instructions that accompany it, also to the section about host
adapter installation in your server 's documentation. For a list of supported adapters and required
interposers, visit the web at http://www.ibm.com/storage/lto.

Connecting the SAS interface cable

Each tape drive is required to have a dedicated bus to the initiator, referred to as point-to-point
connection. SAS architecture does not support multiple tape drives connected to a single host adapter
port. The maximum SAS cable length that can be used to connect the host adapter to the tape drive is 5.5
m.
To connect the cable:
1. Ensure that the tape drive is powered OFF.
2. Since there are several types of SAS connectors, verify that the SAS cable has the correct connectors
for the SAS host adapter and for the tape drive.
3. The tape drive has two SAS ports and can be connected to two servers. Refer to the appropriate
figure that represents your configuration for cabling information (see Figure 5 or Figure 6). Then,
connect the SAS cables to SAS host adapters and to the tape drive as shown.
Figure 5. Example of connecting one SAS device to the server
1
Tape drive
2
SAS connector
3
SAS cable
Figure 6. Example of connecting the SAS device to two servers
1
Tape drive
5
3
4
4
5
5
4 3
1
2
4
SAS host adapter
5
Server
3
2
1
2
4
SAS host adapter
9
Installation