06-09-2011 05:14 AM
the construct is a little bit strange.
Simple version of the connection is:
Storage controller – Blade Switch – Core Switch
Imagine, a link failure between the blade switch and the core switch occurs. In that case the storage controller is not able to recognize this failure. So my wish is, if a link failure occurs the switch goes offline, the storage also recognizes a link failure and switches the datatraffic to another port, which is connected to another switch.
06-13-2011 03:43 PM
Use Multipath software to overcome that. Don't mess about with disabling switches.
EMC for instance has PowerPath for its boxes.
Linux systems can use multipathd/ dev-mapper/ PVlinks (LVM)
Micrsoft systems can utilize the MPIO framework, which is used extensivly by HP (array's).