Quickloop Topology - HP StorageWorks 2/16 - SAN Switch User Manual

Quickloop fabric assist version 3.0.x user guide
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To use a QuickLoop telnet command, log into the relevant switch with
administrative privileges, enter the command along with any required operands,
and press Enter.
For a description of all the telnet commands provided for managing QuickLoop,
refer to the Fabric Operating System Reference Guide.

QuickLoop Topology

QuickLoop topologies have the following characteristics:
Quickloop Fabric Assist User Guide
A QuickLoop can include up to two switches and can support up to 126
AL_PA devices.
Each switch can only be included in one QuickLoop.
A QuickLoop can include either all of, or a subset of, the ports on an
individual switch.
Multiple non-overlapping QuickLoops can exist in a fabric of multiple
switches.
Switches with QuickLoops 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, or "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.
A QuickLoop can be enabled or disabled for either the entire switch or for
individual ports. When QuickLoop is disabled on an individual port, that port
returns to Fabric mode.
Each looplet in a QuickLoop has its own unshared bandwidth and can support
transfer rates up to 100 MB/s.
Using Quick Loop
21

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