Dell POWEREDGE 4300, Installation And Troubleshooting Manual

Page: 147 / 217

Installing Drives in the External Bays 9-5
NOTE: Unused power cables may be held in a retention clip just underneath the com-
puter’s top cover. The power cable connectors may be covered with protective plastic
caps.
,QVWDOOLQJ6&6,'HYLFHVLQWKH([WHUQDO%D\V
SCSI devices in the external drive bays are controlled by the Ultra/Narrow SCSI con-
troller on the system board.
6&6,&RQILJXUDWLRQ,QIRUPDWLRQ
Although SCSI devices are installed essentially the same way as other devices, their
configuration requirements are different. To configure SCSI devices installed in the
external bays, follow the guidelines in the following subsections.
6&6,,'1XPEHUV
Each device attached to the Ultra/Narrow SCSI host adapter must have a unique SCSI
ID number from 0 to 7.
When SCSI devices are shipped from Dell, the default SCSI ID numbers are assigned
as follows:
‡
The onboard Ultra/Narrow SCSI host adapter is configured through the basic
input/output system (BIOS) as SCSI ID 7.
‡
A SCSI tape drive is configured as SCSI ID 6 (the default ID number for a tape
drive).
‡
A SCSI CD-ROM drive is usually configured as SCSI ID 5.
NOTE: There is no requirement that SCSI ID numbers be assigned sequentially or that
devices be attached to the cable in order by ID number.
'HYLFH7HUPLQDWLRQ
Dell provides a SCSI cable with an active terminator on the end of the cable. All SCSI
devices attached to the cable must have termination disabled.
6&6,&DEOH
&$87,21'HOOUHFRPPHQGVWKDW\RXXVHRQO\6&6,FDEOHVSXUFKDVHGIURP
'HOO6&6,FDEOHVSXUFKDVHGHOVHZKHUHDUHQRWJXDUDQWHHGWRZRUNUHOLDEO\
ZLWK'HOO3RZHU(GJHV\VWHPV
The 50-pin Ultra/Narrow SCSI cable has four connectors:
‡
The connector at the end of the cable farthest away from the other three connec-
tors attaches to the Ultra/Narrow SCSI host adapter connector labeled “SCSI2”
on the system board.
‡
The other connectors on the cable attach to SCSI devices in the three external
drive bays.