2016-04-05 09:22 AM
I am assigned to work on this chronic ISCSI/storage failover/failback issue.
So here is the issue:
Everytime there is storage failover, the host loses the lun connectivity and there is timeout. Servers needs to be either rebooted or the luns needs to be rescanned in order to connect back. Any thoughts/suggesstions/soulutions would be appreciated.
2016-04-05 04:56 PM
The SAN host(s) may require remediation.
First validate the config against the IMT, then perform any required updates.
-Lack of MPIO, or misconfigured MPIO (if cDOT)
-misconfigured CFO (if 7mode)
-misconfigured network switch (spanning-tree/portfast)
-Unsupported SAN host
2016-04-06 07:46 PM
Thats a good point. For VMware hosts the recommended settings should be applied with the VSC, some of which require a host reboot to take effect. Some guest instances may need timeouts set as well.