We bought an extension for our FAS 270c. It's a shelf of 14x300GB disks with ESH4 heads (don't know the name).
On my FAS 270c, head A is an host : "myuphost" and head B is another one : "mydownhost", each have some disks assigned. I want to assign all new disks to head A ("myuphost").
I don't know what to connect to what.
On my FAS270c :
Head A (up) : FC B : nothing
FC C : gbic with a LC loopback in
Head B (down) : FC B : nothing
(this picture is not mine because there are no LC loopback, but heads are the same)
On my Extension :
Head ESH4 A (up) : "IN" port and "OUT" port
Head ESH4 B (down) : "IN" port and "OUT" Port
Do I have to connect Head A FC port (C) to ESH4 A "OUT" and plug the loopback in ESH4 A "IN" ? (and also for Head B with ESH B ? )
Thanks a lot.
See The Solution
If you follow the doc carefully each step number is shown (with relevant location) on the diagram:
5. Plug the SFP module into Fibre Channel port C. If you are not attaching a third-party device, terminate the port.
In other words, if you are not connecting any host-side (or backup) fabric, then terminate port C
8. Cable the Fibre Channel port on Node B to the disk shelf ESH2/ESH4/AT-FCX module B Input.
And the diagram clearly shows this step has to be done using port B on the controller (yeah, confusing as they also use A & B to describe two different controllers)
View solution in original post
Have a look at attached pdf with step-by-step instructions.
Thanks for this help.
I've one last question.
Do I have to plug a "loopback" in the OUT FC port of the ESH4 head ?
Nope - terminators stay in controller units.
I'm not sure of what I have to do...
In my extension, ESH4 modules only have LC plugs for Fiber Channel
In controller units, I have one LC port C and another type of plug (don't know the name) on port B.
Is it OK if I plug LC port from the controller unit (so I have to remove terminator) to "IN" port of ESH4 module ?
The older FAS270s have an hssdc2 connection (newer ROHS compliant have SFP). To connect the older 270 to the ESH, you need an HSSDC2 to SFP cable. The NetApp part # is X6531...you have to run the shelf at 1GB.
But can I connect SFP port to my ESH4 module ?
The document that radek.kubka post show that this is the port C which is connected.
OK, thanks you very much.
Now I'm sure that my provider didn't give me the rights cables ...
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