User Guide

25
IV. Hardware Setup
II. Components
AR1000 RAID Subsystem Hardware Reference Guide
IDSEL 1=off
IDSEL 0=off
ON
IDSEL 1=on
IDSEL 0=on
ON
IDSEL 1=on
IDSEL 1=off
ON
ON
IDSEL 1=off
IDSEL 0=on
ON
IDSEL1 IDSEL0 Slot1 Slot2 Slot3A Slot4 Slot5A
off off Resv.
on on 15 12 11 8 3
on off 14 9 6 4 1
off on 13 10 5 2 0
ON
DLY_START
RMT_START
IDSEL 1
IDSEL 0
1 2 3 4
1 2 3 4
ON
Default setting
IDSEL 1 off
IDSEL 0 on
DLY_START on
RMT_START off
SCSI ID settings are made through DIP switches located on the SCSI
board. The SCSI board has four dip switches to set the hard drive’s
motor up delay time and SCSI ID.
SCSI ID Dip Switches
• 2-10. SCSI ID Setting
SCSI ID Setting
(*) Default
IDSEL1 IDSEL0 Slot1 Slot2 Slot3A/3B Slot4 Slot5A/5B
off off Reserved
on on 15 12 11 8 3
on off 14 9 6 4 1
off on 13 10 5 2 0
(*)
SCSI ID Setting
(*) Default
RMT_START DLY_START Description
off off Motor (spin) up when powering on
on off Motor (spin) up after START UNIT command
off on Motor (spin) up after 12xSCSI ID ms
on on Reserved
(*)
Hard Disk Drive Motor Up Delay
For Five-Tray SCA Hard Drive Model