Tandberg Data VXA-320 (VXA-3) - Manual (Page 29)

O CTOBER 2006 VXA-320 T APE D RIVE 15
I
NSTALLING THE
T
APE
D
RIVE
4. Obtain the necessary cables and terminator — The tape drive connects to
the SCSI bus using a cable with a high-density, 68-pin male connector. This
cable must meet the guidelines in “SCSI Cable Requirements,” beginning
on page 41 . If the tape drive is the last device on the SCSI bus, you will need
to install an LVD/SE terminator at the physical end of the bus.
5. Do not exceed SCSI bus length restrictions— The maximum allowable
length of an LVD SCSI bus is 12 meters (39 feet) if you have more than two
devices on the bus. Make sure the SCSI bus attached to the tape drive does
not exceed this length. To determine the length of the bus:
a. Add together the lengths of all external SCSI cables attaching devices on
the bus. External devices are those connected outside of the server’s
enclosure.
b. Add together the lengths of all SCSI cables attaching internal devices on
the bus. Internal devices are those installed within the server’s enclosure.
c. Add together the lengths of all internal cabling for all other SCSI devices
on the bus. Refer to the individual product documentation for cable
length information.
6. Make sure the SCSI bus is properly terminated— You must install an LVD
or LVD/SE multimode terminator on the device at the physical end of the
SCSI bus. If the tape drive is at the physical end of the SCSI bus, you must
install the required terminator on one of the tape drive’s SCSI connectors.
If there are additional devices on the SCSI bus, ensure that only the device
at the physical end of the bus is terminated.
Install the Tape Drive
1. Power down the host computer system.
Turn off all devices attached to the computer to which you plan to connect
the tape drive, then turn off the computer. Disconnect all power cables.
2. Set the SCSI ID.
The tape drive is shipped with a SCSI ID of 11. If another device on the SCSI
bus is already configured with this SCSI ID, you will need to change the
tape drive’s SCSI ID. To change the default ID, press the + and – tabs above
and below the SCSI ID indicator until the desired SCSI ID appears. See
Figure 2-6 .
3. Connect the SCSI cable.
a. Ensure that the cable complies with the SCSI-3 specification and has a
68-pin high-density male connector. See Table 6-5 for cable specifications.
Caution
Do not use a noncompliant SCSI cable; it will degrade VXA-320 performance and
can cause random, nonreproducible errors. See Table 6-5 for cable specifications.