Setup
A number of Dell PE1950/R610 servers connected to MD3000i disk array via dedicated iSCSI switches Cisco 3750.
Problem
After upgrade from ESXi 3.5 to ESXi 4.1.0 hosts may lost and restore connection to one of LUN.
In most cases connection lost/restored in same second so no real problem.
However few times it took long time ( >60 sec) and as result VMs freeze/become unresponsive.
We installed latest updates, upgrade BIOS/firmware, tried different path policy: Round Robin, Most Recent Used, Fixed.
Hopefully no more real outages, but still see these messages, which scare us :-(
What else we can do?
Thank you in advance,
-- Maxim
Lost access to volume 4a152e6b-8bc7843f-8500-001b21351ec0 (raid5_1) due to connectivity issues. Recovery attempt is in progress and outcome will be reported shortly.
26/02/2011 7:34:04 AM
Successfully restored access to volume 4a152e6b-8bc7843f-8500-001b21351ec0 (raid5_1) following connectivity issues.
26/02/2011 7:33:47 AM