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Appendix 29
Appendix A
Using SCSI Devices
Using SCSI Hard Disk Drives
• If you connect a SCSI hard disk drive to the ASUS LS99 SCSI card that was
previously connected to a different SCSI card, you must low-level format the
drive before you can use it. Back up the data on the drive before you format it!
(See 3.2.4 Using SCSI Disk Utilities for information on using the SCSISelect
format utility.)
CAUTION: A low-level format destroys all data on the drive. Be sure
to back up the data before performing a low-level format.
• Every SCSI hard disk drive must be physically low-level formatted, partitioned,
and logically formatted before it can be used to store data. Most SCSI drives are
pre-formatted at the factory. If your SCSI hard disk drive has not been pre-
formatted at the factory, and if your computer is running under DOS, Windows
®
3.x, or Windows 95/98, you can format the disk with the DOS Fdisk and Format
commands. (See the DOS and Windows documentation for more information.)
To format SCSI hard disk drives running under other operating systems, see the
operating system documentation.
Using Ultra160 Hard Disk Drives
• We recommend that you connect your LVD (Ultra160 and Ultra2) SCSI devices
and non-LVD SCSI devices to separate channels. This allows the LVD SCSI
devices to run at their maximum performance levels of 160 MBytes/sec or 80
MBytes/sec. If you combine LVD and non-LVD SCSI devices on the same SCSI
channel,the data transfer rate of the LVD SCSI devices will drop down to non-
LVD SCSI performance levels of up to 40 MBytes/sec.
• Internal Ultra2 and Ultra160 SCSI devices come from the factory with termination
disabled and cannot be changed. Proper termination is provided by the terminator
at the end of the internal LVD SCSI cable.
Using Scanners
If you connect a scanner to the ASUS LS99 SCSI Card, you must install the scanner
manufacturer’s proprietary software drivers. See your scanner’s documentation for
details.