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Symptom(s):
When connecting a single SCSI Channel to two SCSI backplanes via the SCSI Y-Cable in the Intel® Server Chassis SC5200, one backplane and its disks may not be seen.
This applies to onboard SCSI Controllers, as well as any PCI SCSI and SCSI RAID Controllers.
Cause:
By default, the hot-swap controllers in the SCSI Hot-swap drive bays will use the same SCSI ID's for the SAF-TE controller and disks. When two drive bays are connected to the same SCSI channel this will lead to SCSI ID conflicts and cause one bay and its disks not to be seen.
The drive bays need to be connected to the HSBP headers on the server board in order to work out the correct SCSI ID's. For more information on which SCSI ID's are used, see the following document.
Solution:
When using two SCSI hot-swap drive bays on the same SCSI channel, both backplanes must have the same firmware revision (HSC firmware), and both backplanes must be connected via I2C cable to an HSBP header on the board, in order to work out the SCSI ID assignments.
The following boards only have one HSBP header and therefore do not support two SCSI hot-swap drive bays on the same channel:
- Intel® Server Board SE7500CW2
- Intel® Server Board SE7501CW2
- Intel® Server Board SE7505VB2
- Intel® Server Board S875WP1-E
- Intel® Entry Server Board SE7210TP1-E
In order to support two SCSI drive bays, use one of the following server boards:
- Intel® Server Board SHG2
- Intel® Server Board SE7501BR2
- Intel® Server Board SE7501HG2
Please note you also may need to disable termination on the SCSI controller in order to support this configuration.
This applies to:
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