There is really nothing magical about this, except that you must be running at least 6.1 (I suggest 6.1R1 as it has some really good fixes in it, but that's not really relevent to this topic).
Basically, for non-clustered filers, if the filer detects and A and B loop on the same shelf, then it assumes dual path. If you have two A loops on different shelves, it assumes a single path.
It is suggested if you are hooking up a dual path loop that the B loop start at the opposite end of the loop as the A loop. In other words, the B loop starts on the last shelf on the A loop and works it's way back.
Once the filer is brought up, you can view this with the new 'storage' command in 6.1.
filer> storage show disk -p
Is a good start. This will show you which disks are on the A loop and which disks are on the B loop.
There really isn't much to it.
-- Adam Fox NetApp Professional Services, NC adamfox@netapp.com
-----Original Message----- From: Honeycutt, Michael [mailto:MichaelHoneycutt@NC.SLR.com] Sent: Wednesday, May 16, 2001 11:00 AM To: 'toasters@mathworks.com' Subject: Hardware Upgrade
Anyone upgraded to the new dual port fcal's yet? Looking for some info on what options/config changes would have to be made after the cards are installed. Should the filer just recognize that the cards are there and automatically set up the second loop? Anyone at NetApp with documentation that could be supplied would be appreciated. Thanks.
Michael Honeycutt MCSE/A+ NT/Exchange Engineer IBM Global Services