SCSI Bus and ID Settings
See > 'Rack and Tower Mode Settings'
When you install a drive CRU in the expansion unit, the drive tray plugs into a printed circuit board called the midplane .
The midplane sets the SCSI bus number and ID automatically, based on the setting of Option Switch 1 and the physical location (bay) of the drive CRU.
Your expansion unit supports up to two external SCSI buses and up to two internal SCSI buses.
Each internal SCSI bus uses five SCSI IDs.
When you install the expansion unit, you can set Option Switch 1 on the ESM board to create two separate five drive SCSI buses, or you can leave it set as one, daisy-chained ten drive SCSI bus.
0, 1, 2, 3, 4, 8, 9, 1#, 11, 12.
The system-management SCSI accessed fault tolerant enclosure (SAF-TE) processor uses SCSI ID 15.
When Option Switch 1 is set to the Off position, you can use either external cable connector.
If you are using a ServeRAID software version earlier than Version 3.50, the View Configuration screens might show SCSI IDs or bay numbers.
If the data shown on the View Configuration screen begins with '0', it denotes SCSI IDs.
If the data shown on the View Configuration screen begins with '1', it denotes bay numbers.
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