HP C5658A - SureStore DLT 70e Tape Drive User Manual page 22

Check System Prerequisites
To install and use your new tape drive, you will need the following:
A properly installed and configured SCSI host adapter (SCSI-2 or SCSI-3
compliant).
For optimal performance, Hewlett-Packard recommends that your DLT
drive is placed on a dedicated SCSI bus. If this means you need to install a
new host adapter, contact your supplier. Many host adapters are available,
and your supplier will tell you which are suitable for HP SureStore DLT
drives.
HP SureStore DLT drives have the following SCSI characteristics:
• The HP SureStore DLT 40e is an 8-bit narrow single-ended SCSI device,
which can be connected to either a narrow or wide SCSI bus.
• The HP SureStore DLT 70e is a 16-bit fast, wide, single-ended SCSI
device, which must be connected to a wide SCSI host adapter.
• The HP SureStore DLT 80e is an ultra-wide SCSI-2 device, which can
be used with both LVD (low-voltage differential) and single-ended host
bus adapters (HBAs). The drive is not compatible with SCSI-2 high-
voltage differential SCSI HBAs.
If you want the full benefits of longer cable lengths and full-speed
compatibility with other LVD devices on the same bus, choose an LVD
compatible HBA.
An appropriate SCSI cable, if the one supplied with the tape drive does not
fit your computer.
• The HP SureStore DLT 40e is provided with a 68-pin to 50-pin cable
with active high-byte termination. Use this if your computer has a
68-pin wide SCSI connector, so that the unused lines in the cable are
terminated properly.
If you need a different cable, for example, if you are installing the drive
on a narrow SCSI bus, see page A-5 for part numbers and descriptions.
HP SureStore DLT 40e drives require a SCSI cable with a 50-pin low-
density bail connector at one end to connect to the drive.
• HP SureStore DLT 70e is provided with a 68-pin to 68-pin cable, which
connects the drive to a wide SCSI connector.
• HP SureStore DLT 80e is provided with a 68-pin to 68-pin cable, which
connects the drive to an LVD connector or a wide SCSI connector.
If you are installing the drive on a UNIX system, refer to the separate
UNIX Configuration Guide for further information about the systems
supported and software configuration.
Installing an External Drive
Before You Start
2-3