Quantum LTO-2 - Manual (Page 64)

Chapter 6 UNIX Settings
A Word About SCSI Controllers
50 LTO-2 Half-Height Tape Drive User’s Guide
A Word About SCSI Controllers
6
The LTO-2 Half-Height Tape Drive transfers data at 40Mbytes per
second, with 2:1 compression of the data. The drive supports the SCSI
Ultra3 specification and can transfer data at burst rates of up to 160
Mbytes per second. To achieve maximum drive performance, it is
important to choose high-performance disk drives for your system, as
well as high performance SCSI controllers. Table 11 lists the types of SCSI
controllers that Quantum recommends, in order of least preferred to most
preferred (top to bottom).
Table 11 SCSI
Controllers
For definitions of the terms used above, please refer to SCSI Trade
Association web site:
www.scsita.org/aboutscsi/index01.html
Configuring for the DEC/Compaq UNIX Environment
6
Finding Existing
SCSI Controllers
and Devices
6
SCSI ID #7 is almost always dedicated to the SCSI controller. Never
configure your target device for ID 7 unless you are absolutely sure that
the controller is not addressed for ID 7.
Controller Type Maximum Transfer Rate
Wide Ultra2 SCSI 80 Mbytes per second, compatible
Ultra 3 SCSI 160 Mbytes per second, minimum preferred
Ultra 320 SCSI 320 Mbytes per second