Installation guide

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