We have a dual SAN fabric for our ESX cluster, backed with a FAS3140 MC.
SAN switches are (NetApp provided) Brocade 300's.
There are 2 completely separate SAN fabrics, each ESX and each FAS being joined to each fabric.
What would be the right and clean way to shutdown a SAN switch for maintenance ?
Should I disable FC links on the ESX side first ?
Can I just halt the switch and let it go and notify nodes, or even just power it down ?
What's the minimal set of steps required for NOT losing any I/O ?