Quickloop Topology - HP StorageWorks MSA 2/8 - SAN Switch User Manual

QuickLoop Topology

QuickLoop topologies have the following characteristics:
QuickLoop Fabric Assist Version 3.1.x User Guide
A QuickLoop can include up to two switches and can support up to 126
AL_PA devices.
Each particular switch can only be included in one QuickLoop.
A QuickLoop can include either all of, or a subset of, the ports on a particular
switch.
Multiple non-overlapping QuickLoops can exist in a fabric of multiple
switches.
Switches with QuickLoop enabled can exist in the same fabric as
non-QuickLoop enabled switches.
A device attached to a QuickLoop can communicate with all other devices
attached to the same QuickLoop.
A private device in a QuickLoop can only communicate with devices in the
same QuickLoop. Existing PLDA capable host drivers need no modification
to perform I/O operations with storage devices.
Public devices that are arbitrated loop capable are treated as private devices
when connected to QuickLoop ports (their Fabric Login (FLOGI) is not
valid).
Legacy devices may be used in a QuickLoop and may be attached to a fabric
and operate as if in a PLDA environment.
QuickLoop functionality can be enabled or disabled for either the entire
switch or for particular ports. When QuickLoop is disabled on a particular
port, that port returns to Fabric mode.
If a looplet error is detected, QuickLoop automatically takes that looplet out
of service. If the error condition is cleared, the looplet is automatically
reinstated.
Using QuickLoop
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