Re: Moving dual attached disk loops from one adapter to another -- HOT ??

There are some risks involved, so lets start with the basic question. Why do you want to move the loops to the expansion cards in the first place?

Paul Letta wrote:

Hello,

I've got 2 disk loops, both are dual attached. I've got 2 unused, dual port FC cards in slots 3 and 4. The cards/slots are listed as good for disks on the hardware guide. This is for a FAS3040, running 7.2.6.1.

Loop 1 is attached to port 0a and 0c. Loop 2 is attached to port 0b and 0d.

Can I do the following hot with no down time?

1. Unplug loop1 from 0a and plug it into 3a
2. Unplug loop1 from 0c and plug it into 4a
3. Unplug loop 2 from 0b and plug it into 3b
4. Unplug loop 2 from 0d and plug it into 4b

I would wait after each step and verify that the disks are visible via both adapters with a sysconfig -a before moving on to the next step.

I did open a support case with the exact text above. But all I got was a very non-technical answer:

In rare cases it can be done... but it always has potential for problems. I will say :”NO” to your question, It is not a good idea to do it “HOT”. It would be better to schedule a time when you can have a maintenance window (there will be downtime).

I can wait for an off peak time to try this. But I would rather not take the filer down to do it cold if there is a chance I can do it hot.

Thanks, Paul