Fibre Channel (SAN)

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Occasional Contributor
Posts: 5
Registered: ‎02-15-2007

single point of failure in a three switch fabric

Our SAN was originally designed as a two switch fabric in a two room environment on a manufacturing campus. We have added IBM blade centers with a Brocade 4020 switch and have added that switch to the fabric via one connection from the 4020 to one the local switch.

External Moderator
Posts: 4,973
Registered: ‎02-23-2004

Re: single point of failure in a three switch fabric

Stuart, i am not sure if i understand wath you mean:If yes, you can connect the SW4020 trough ISL with a External Switch to create a Fabric, but this not will create any Failover, because the SW4020 connectivity with the Blade's Server / HBA is only available trough the Backplane. To Create a Failover beetwen the Blade Center you must insert 2x "TWO" SW4020. I hope this help, otherview explain here the Config.

TechHelp24
Occasional Contributor
Posts: 5
Registered: ‎02-15-2007

Re: single point of failure in a three switch fabric

I thought that I had notification turned ON, but I don't recall ever seeing a post notificaiton. My question is still outstanding. Stuart

Frequent Contributor
Posts: 78
Registered: ‎12-23-2005

Re: single point of failure in a three switch fabric

for having redundancy with the switches you are correct.the most common approach would be to have all switches redundant (2x4020, 2x3800) and set them up in a dual fabric design (4020_1 and 3800_1 in one fabric and 4020_2 and 3800_2 as seperate fabric)

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