IBM TS2250, Setup, Operator, And Service Manual

Page: 38 / 149

DANGER
An electrical outlet that is not correctly wired could place
hazardous voltage on metal parts of the system or the devices that
attach to the system. It is the responsibility of the customer to
ensure that the outlet is correctly wired and grounded to prevent
an electrical shock.
(D004)
Position the Tape Drive
Position the unit so it is convenient to the server. The only restrictions are the
length of the power cord and the length of the cable to the server. Recommended
locations are:
v
Away from high-traffic areas, especially if the floor is carpeted.
v
Out of printer or copy rooms to avoid toner and paper dust. Do not store paper
supplies next to any unit.
v Away from moving air, such as doorways, open windows, fans, and air
conditioners.
v
Off the floor.
v In a horizontal position.
v
Where the tape cartridge can be easily inserted.
The unit should not be stacked. Do not place anything on top of the unit.
Install the SAS Host Adapter Card (if required)
If there are no other devices attached to your server, a SAS host adapter card may
need to be installed in the server. To install an adapter, refer to the instructions that
accompany it, as well as to the section about host adapter card 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 bus cable
The requirements for SAS bus connections are different than for the SCSI bus. 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 the tape drive is powered OFF.
2. Since there are several types of SAS connectors, verify 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, if
desired. See Figure 2-2 on page 2-5 for connection to one server. See Figure 2-3
on page 2-5 for connection to two servers. Then connect the SAS cable(s) to
SAS host adapter(s) and to the tape drive as shown.
2-4
TS2250 Tape Drive Setup, Operator and Service manual