Linux Admin wrote:
Thanks to a lot of people who responded: Adam, Skottie, Blake. In regards to 4 FC on board FC cards if I have a 3050 cluter system: don't I use all 4 for disk shelves connectivity: 2 locally, 2 partner? does it not leave me without tape/san ports?
depends on how many shelves, and the disk performance you need/expect.
I use as few loops / fc ports as possible for partner disks, since (by definition) failover performance may be degraded.
If you require failover performance to not degrade, then you need to be sure to never run either head > 50%, and provide sufficient FC bandwidth to the disk shelves to match your workload when failed over.
Since we rarely operate failed over for very long, I'd rather use the fc ports for the primary disk shelves.
-skottie