IBM System Storage TS3500, Введение и руководство по планированию

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Two-node direct connection topology
A two-node direct connection occurs when two Fibre Channel end points are
connected together. The difference is in the topology. Either Arbitrated Loop or
Point-to-Point topology is usable, but both end points must use the same topology.
Most Fibre Channel adapters have settings that allow selection of the topology or
they default to the loop topology when they are not directly connected to a fabric.
In addition, the TS3500 Tape Library allows you to set the drive port to any of
these topologies. To set a port to a topology, see the section about viewing or
changing Fibre Channel port speeds and topologies in the
IBM System Storage
TS3500 Tape Library with ALMS Operator Guide .
Use the Arbitrated Loop (L_port) topology in a two-node direct connection. This
topology is supported when you attach the TS3500 Tape Library through Ultrium
or 3592 tape drives. Use of the Point-to-Point topology in a two-node direct
connection in the library to an N_port is not supported.
Fibre Channel addressing
This section defines and lists the default Loop ID and Arbitrated Loop Physical
Address (AL_PA) for each Ultrium tape drive and 3592 tape drive that
communicates in a Fibre Channel topology.
Each Ultrium tape drive and 3592 tape drive in a TS3500 Tape Library must have a
Loop ID and corresponding Arbitrated Loop Physical Address (AL_PA) to
communicate in a Fibre Channel topology. Table 64 lists the default Loop IDs and
AL_PAs for each drive in the library.
The AL_PAs defined here are used when connecting to other devices in Arbitrated
Loop topology only. When connected in a switched fabric point-to-point topology,
the AL_PA is assigned by the fabric and these AL_PAs are not used.
Note: In Table 64, the values for Port 2 do not apply to tape drives that have a
single port.
Table 64. Default Loop IDs and their associated AL_PAs for drives with single or dual ports . For drives with single
ports, use the values for Port 1; for drives with dual ports, use Ports 1 and 2.
Drive
Frames 1, 7, 13 Frames 2, 8, 14 Frames 3, 9, 15 Frames 4, 10, 16 Frames 5, 11 Frames 6, 12
Loop
ID
AL_PA
Loop
ID
AL_PA
Loop
ID
AL_PA
Loop
ID
AL_PA
Loop
ID
AL_PA
Loop
ID
AL_PA
Row 1
Port 1 17 X'CC' 33 X'B1' 49 X'97' 65 X'71' 81 X'54' 97 X'39'
Port 2 81 X'54' 97 X'39' 18 X'CB' 34 X'AE' 17 X'CC' 33 X'B1'
Row 2
Port 1 18 X'CB' 34 X'AE' 50 X'90' 66 X'6E' 82 X'53' 98 X'36'
Port 2 82 X'53' 98 X'36' 19 X'CA' 35 X'AD' 18 X'CB' 34 X'AE'
Row 3
Port 1 19 X'CA' 35 X'AD' 51 X'8F' 67 X'6D' 83 X'52' 99 X'35'
Port 2 83 X'52' 99 X'35' 20 X'C9' 36 X'AC' 19 X'CA' 35 X'AD'
Row 4
Port 1 20 X'C9' 36 X'AC' 52 X'88' 68 X'6C' 84 X'51' 100 X'34'
Port 2 84 X'51' 100 X'34' 21 X'C7' 37 X'AB' 20 X'C9' 36 X'AC'
Chapter 6. Using the Fibre Channel interface
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