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Operating Your Storage Enclosure 21
Figure 2-1. Connecting a SAS Cable
NOTE: In a unified-mode configuration, connect the host to the first EMM
module (EMM 0). See Figure 2-2. For unified-mode configurations utilizing
redundant paths, connect the host to the second EMM module (EMM1). See
Figure 2-3.
See your RAID controller documentation to ensure that the controller is
properly installed.
• If you are configuring your enclosure in a unified-mode configuration,
connect the SAS cable from the host controller to the In port on the
EMM module of the first
enclosure
in the daisy chain. See Figure 2-2.
Attach subsequent storage
enclosure
s in the daisy chain to the Out
port on the first upchain storage
enclosure
.
• If you are configuring your enclosure in a split-mode configuration,
attach the SAS cable from the first host controller to the In port on
the primary EMM module and the SAS cable from the second host
controller port to the In port on the secondary EMM. See Figure 2-4.
NOTE: In a split-mode configuration, you can cable the enclosure to operate
in either a two-host or single-host configuration.
1 SAS cable 2 pull-tab
1 2
book.book Page 21 Monday, December 7, 2009 4:51 PM