Am finding it takes quite a long time ie several minutes, for the following commands to finish executing (but without failure!) when logged in via ssh in tech support mode. It is Esxi4.0...which I agree is quite old:
ls -asl /
(ie listing the root directory)
ls -asl /vmfsvolumes
ls: ./e00f98e1-2bcc0c91-e7a2-3487611c1557: Connection timed out
ls: ./8651407d-22f5a0a4-44b3-aa1ac5b23fe8: Connection timed out
ls: ./4bbcb300-91be9561-f4d1-00270e22118d: Connection timed out
ls: ./4bbcb302-e81e496c-10d5-00270e22118d: Connection timed out
ls: ./74b0ab7e-3c564a8d-e693-0f8e5503d3d6: Connection timed out
1 TB new Seagate HDD Hypervisor1 Hypervisor3 VMwareOS
55b426c5-9fb7f4ef-350f-00270e22118d Hypervisor2 QNAP-backup fb4a3148-fb757b6e
Is my vmware about to fail?
Someone said it could be the datastore (which is on a NAS), and which has had some anomalous behaviour lately
anything else I can check?
should I reboot the vmware OS?
What hardware are you using for the asked ESXi 4.0? It seems to be related to HBA adaptor driver as well. If any hardware upgrade (Drivers\BIOS\Firmware) is available please upgrade.
Parallely you can check with your storage team if they are seeing any disconnects from Fibre Switch end or not. If they are all clear then the maim culprit is your HBA drivers.