Appendix a: installation notes, Helpful acceleraid installation notes, Scsi formats and bus lengths – Avago Technologies AcceleRAID 150 User Manual
Page 53: Appendix a, Installation notes
Manual No. 775020
A-1
Appendix A
Installation Notes
Helpful AcceleRAID Installation Notes
The purpose of this appendix is to provide additional information about your
AcceleRAID 150 installation of either the Standard or SISL configuration.
There are cross references to direct you to the appropriate topic in the main
installation section of this manual.
SCSI Formats and Bus Lengths
Table A-1. Supported SCSI Formats and Bus Lengths
*
SCSI Trade Association (STA) Terms
† The maximum number of devices allowed on a Wide Ultra SCSI bus is 8 unless
bus extender technology is used
☛
Note
In order to ensure an error free environment,
the proper cable designed for a certain SCSI
speed must be used.
SCSI Drive Type*
Bus
Speed,
MB/Sec,
Max.
Bus
Width,
Bits
Max. Bus Length, Meters*
Max. Device
Support
(Including
Controller)
Single-ended
Low-Voltage
Differential
SCSI-1
5
8
6
-
8
Fast SCSI
10
8
3
-
8
Fast Wide SCSI
20
16
3
-
16
Ultra SCSI
20
8
1.5
-
8
Ultra SCSI
20
8
3
-
4
Wide Ultra SCSI
40
16
-
-
16 †
Wide Ultra SCSI
40
16
1.5
-
8
Wide Ultra SCSI
40
16
3
-
4
Ultra2 SCSI
40
8
Not Defined
12
8
Wide Ultra2 SCSI
80
16
Not Defined
12
16