StorCase Technology CSI-to-SCSI Single & Dual RAID - Manual (Page 155)

142 Appendix C - Troubleshooting
StorCase Technology, Inc. Dual RAID Module User's Guide - Rev. A03
Device SCSI Channel Problems
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Not all drives connected to the device channels are displayed during boot, or the
RAID Controller Module hangs during display of connected drives and never
reaches the Administrator Utility screen.
Check the InfoStation to make sure it is properly configured for use with the RAID Controller
Module . Check to make sure all the InfoStation drive carriers are properly installed. Check
termination and ID assignment. Or, try reducing the maximum drive channel speed. If there
are drives that are not Ultra160 capable, try setting the bus speed to 80MB/sec.
When in Active-Active mode, the dual controllers communicate with each other using SCSI
Initiator IDs 6 & 7 on the disk channels. IDs 6 & 7 are factory set to ensure optimum
communication between the two controllers. These IDs cannot be changed while in Active-
Active mode. DO NOT configure any other devices to IDs 6 & 7 on the disk channels, or the
Active-Active configuration will fail to operate!
NOTES: Check the controller termination settings for all channels.
Controller A (Primary) disk channel SCSI ID (Initiator ID) is factory set to SCSI ID7.
DO NOT configure any other devices to ID7 on the disk channel, or the configuration
will fail to operate!
Controller B (Secondary) disk channel SCSI ID (Initiator ID) is factory set to SCSI ID6.
DO NOT configure any other devices to ID6 on the disk channel, or the configuration
will fail to operate!
Up to 14 disks per SCSI channel with Dual RAID Controller Module Unit installed.
(14 Disks x 2 Channels = 28 Disks Total)
StorCase does not recommend changing the factory default Initiator ID(s).