redundant switch connections (verification)

[beckhamk]

Take a look at: [http://www.vmware.com/pdf/vi3esx_san_cfg.pdf]_ goto page 43 where it shows the diagram on how the host servers are wired to the switches and then how the switches are wired to the sp's.

I want to verify that this diagram is correct and that if the correct wiring that switch1 has 1 wire to sp1, and 1 wire to sp2, and ditto for switch2.

Some techs came in and connected our FC wiring with switch 1 both ports going to the two ports on sp1 and switch 2 both going to sp2, which seems completely fubar to me.

[Dave_Mishchenko · Accepted solution]

Sounds like they have it wrong. If you lose one of your switches, you lose connectivity to the SP. In the diagram which is correct, if you lose a switch you can still access both SPs.

[mreferre]

The one in the diagram is the correct wiring.

If i remember well years ago you could only have HBA1 seeing SP1 (theough SW1) and HBA2 seeing SP2 (theough SW2). This was done because there was a limit with regards to the number of path to the same LUN (2 in this case, 4 now in the case of the diagram you pointed out...).

Massimo.