StorCase Technology DS50 - Manual (Page 22)

DS50 User's Guide - Rev. B00 Kingston Technology Company
Installation 15
Selecting the SCSI ID Number
The SCSI ID is an address number (0 through 7 for 8-bit protocol and 0 through 15 for 16-
bit protocol) that is assigned to each SCSI device. In a SCSI daisy-chain, each device in
the chain must have a unique SCSI ID number. SCSI ID 7 is usually reserved for the host
controller. If the computer system is already equipped with internal or external SCSI
storage devices, some ID numbers will already be reserved. For instance, if the computer
system came with an internal SCSI hard drive, it may be designated as SCSI device 0.
Refer to the computer system documentation for additional information.
The Data Silo SCSI ID selection switch(es) is located on the rear panel of the chassis
enclosure (Figure 14). Depending upon the Data Silo model and interface, there are three
(3) different SCSI selection switches available. Two types of rotating switches that can be
adjusted with the provided adjustment tool. The other switch has a push button selector
that can be adjusted with the tip of a pen or straightened paper clip.
Carefully select the appropriate SCSI ID number(s) for the installed devices(s). Note that
some switch settings may be invalid for your interface type. Selecting an invalid ID number,
or selecting the same number on different devices may cause unpredictable results and the
computer system may not recognize the installed device(s). If the computer system can not
recognize the boot disk, the computer system may fail to properly start-up.
Figure 14: SCSI ID Selection Switches
0
2
4
6
8
A
C
E
0
000 1
2
3
4
5
6
7
8 9A
B
C
D
E
F
Some SCSI unit ID numbers on the selection switches may be invalid for your interface type.
Valid 8-bit ID numbers include 0-7. Valid 16-bit ID numbers include 0-15 (Do not use ID7.
It is usually reserved for the host).
0636
0 = ID0 8 = ID8
1 = ID1 9 = ID9
2 = ID2 A = ID10
3 = ID3 B = ID11
4 = ID4 C = ID12
5 = ID5 D = ID13
6 = ID6 E = ID14
7 = ID7 F = ID15
SCSI ID SELECTION SWITCH
(Rotating)
SCSI ID SELECTION SWITCH
(Push Button)
Use Pointed Tool Here to
Set SCSI ID
Use Provided Alignment Tool to Set SCSI
ID (Rotating Switch)
2 Types of Rotating
Switches are Used