Adaptec GDTSETUP Uživatelský manuál stáhnout pdf (Strana 91)

GDT-Channel A  DR1  DR2

GDT-Channel B  DR3

GDT-Channel C  DR4  DR5

We make sure that all three channels have a proper SCSI bus termination. The SCSI-IDs are

set according to the following list:

GDT channel A ID 7 (default)

DR1 ID 0

DR2 ID 6

GDT channel B ID 7 (default)

DR3 ID 2

GDT channel C ID 7 (default)

DR4 ID 2

DR5 ID 4

Also three SCSI-cables are needed. The cables for channel A and C have three connectors,

where the cable for channel B has four, of which two connectors are used by a hard disk

and a CD-ROM drive which are not relevant for our example.

Please note: bad SCSI-cables, wrong SCSI-IDs as well as a wrong termination of the

busses are responsible for 98% of all possible errors !

In addition, it is essential that the hard disks and the controller be connected to the SCSI-

cable with the right orientation. Although SCSI-cables are keyed, you should cross-check if

all connectors of the cable have been pressed matching the correct key, especially when

using home-made cables.

We recommend terminating the SCSI-cables at their ends opposite to the controller by

means of so-called external terminator packs. These packs receive their terminator power

directly from the cable. In this case, the termination is to be removed from or disabled on

all hard disks. In order to get the best signal quality on the cable, the external terminator

packs should have an active SCSI termination. Advantage:

If you use the termination of a

hard disk and this hard disk happens to fail in a manner that harms the bus termination,

then it may occur that all devices connected to this cable do not function properly. There-

fore, it is sensible to use external terminators for reasons of redundancy.

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You can load GDTSETUP in two ways:

1. Press the <CTRL><G> key combination when the GDT BIOS message comes up (shortly

after switching on the computer) and load GDTSETUP from the Flash-RAM of the ICP

Controller. In this case no operating system is required.

If GDTSETUP was loaded this way, there is an "R" (ROM) behind the version number.

2. Load GDTSETUP from disk under MS-DOS. Boot the MS-DOS-operating system (either

from a boot-floppy or from an already existing boot drive, i.e., IDE-hard disk etc.). In or-

der for GDTSETUP to work properly, you have to load the device driver GDTX000 first.

This can be done in two ways:

a.) Load GDTX000 from the DOS-command level by typing in GDTX000<ENTER>

b.) Load GDTX000 automatically through the CONFIG.SYS file (DEVICE=GDTX000.EXE)

Note: GDTSETUP.EXE as well as GDTX000.EXE are on the System Disk - DOS.

If GDTSETUP was loaded this way, there is a "D" (Disk) behind the version number.

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Adaptec GDTSETUP Uživatelský manuál Strana 91

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