Finally VMware have patched the problem with the previous vSphere update that ended up causing All Paths Down errors with NFS storage which I blogged about here: https://thevirtualunknown.wordpress.com/2014/04/24/intermittent-nfs-all-paths-down-on-esxi-5-5-u1-upgrade/ ESXi 5.5 Express Patch 04 has resolved this issue and so any customers with NFS storage should be able to safely patch their VMware environment to resolve the … Continue reading vSphere Patch released to resolve APD errors