Dot Hill Systems SANnet II 200, Installation, Operation And Service Manual

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Appendix B Cabling JBODs B-3
Note –
If you connect two hosts to the same channel, you must change the scsi-
initiator-id of one host adapter as described in the host adapter documentation. When
either of these hosts is subsequently booted, SCSI reset warnings are displayed on the
other host.
B.3 Cabling a Single-Bus JBOD with One Host
Connection
To connect a JBOD in a single-bus configuration to a single host, connect the
following ports:
■
Connect the lower left input port to the upper right port of the JBOD with the SCSI
jumper cable.
■
Connect the lower right input port to one host with a SCSI cable.
Caution –
Before you disconnect a cable from the array, the host bus on that cable
must be inactive.
Caution –
Physical drive IDs are set based on the cabling on the array when it is
powered up. If you are switching from single-bus mode to split-bus mode or from
split-bus mode to single-bus mode, the physical drive IDs change after you power off,
change the cabling, and then power on. If you change physical drive IDs on the array,
ensure that your application points to the correct IDs.
Figure B-1 A Single-Bus JBOD with One Host Connection (Rear View)
Host connection