ESXi reports "All Paths Down" for ReadyNAS hosted NFS share

diegoaze wrote:

Hi jlehtinen, Have you, by any chance, got this issue sorted? We are having same issue here since ever. We use ReadyNAS 4200 as NFS datastores for VMs running virtual backup appliances. During backup window, ReadyNAS is under intensive I/O and I believe it cant handle the load. It will happen if more than 2 backups are running at the same time. We have 10GB NICs setup as a Team, with Active/Backup policy. I have upgraded firmware on it over and over, but none of them have fixed the issue. Currently installed version is RAIDiator 4.2.23. ESXi are running 5.1 U1, but the issue happened when hosts were running 5.0 as well. We have 3 ReadyNAS devices attached to ESXi hosts and the issue happens on all of them, ones more often then the others.

diegoaze

No luck on resolving it. A tech had me do (another) chassis replacement on one of the 3200's, so I've been monitoring that unit.

The storage with the replaced chassis has actually been OK so far, but I'm not sure if that's a coincidence.

This issue seems to get worse over time - the longer the storage is on, and the more data gets pushed on/off, the worse they get - to the point where a reboot of the storage is required to resolve connectivity. It is possible that the unit with the replacement chassis is working better because it was just rebooted, and the issues will manifest again over time.