Scsi cabling, Scsi cabling -4 – Acer PCI to Ultra SCSI RAID Controllers DAC960PG User Manual
Page 18
SCSI Cabling
2-4
DAC960PG and DAC960PJ Installation
SCSI Cabling
Each Ultra SCSI channel supports up to 15 drives.
The total allowable SCSI bus lengths will be limited to the single-ended bus
lengths shown in Table 2-1.
*
SCSI Trade Association terms.
**
The SCSI ID reserved for the RAID controller is not included in this total.
†
The maximum number of devices allowed on a Wide Ultra SCSI channel is 8
including the controller, unless bus extender technology is used.
Table 2-1. Supported SCSI Formats and Bus Lengths
SCSI Drive Type*
Bus Speed,
Max.(MB/Sec)
Bus Width,
(Bits)
Bus Length,
Max.(Meters)
Drives** per
Channel, Max.
SCSI-1
5
8
6
7
Fast SCSI
10
8
3
7
Fast Wide SCSI
20
16
3
15
Ultra SCSI
20
8
1.5
7
Ultra SCSI
20
8
3
3
Wide Ultra SCSI
40
16
—
15†
Wide Ultra SCSI
40
16
1.5
7
Wide Ultra SCSI
40
16
3
3