Compaq External RAID Controller & Subsystem Infortrend Operation Manual page 176

Fibre Operation
Communications Traffic Distributed over All Drive
2.
Loops
: Select all drive loops and configure them as "Drive
+ RCCOM (Drive Loops plus Redundant Controller
Communications)." The communications traffic between
the two controllers will be automatically distributed over
all drive loops.
!
As displayed
communications paths will be displayed as "channel
number (C: connected)" or "channel number (D:
disconnected)." If channels configured in a dual-loop are
selected, channel status will be displayed as "channel
number (pair loop; C or D)."
!
If any of the communications loops should fail, the inter-
controller traffic will be automatically shifted to the
remaining Drive/RCC loop(s).
above, channel(s) selected as the
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