VMware host shows not responding VMs disconnected

Greetings,

I am running VMware 5.5 on two hosts. One host is unreachable but had no VMs on it anyway. The production host has 5 VMs and all show disconnected but are, luckily, still accessible through RDP or UNC. The host shows not responding. vCenter is a VM and on the host that is not responding (was on other host but was moved to this one over the weekend while maintenance was done on the other host). vCenter is still accessible.

There were no errors on the not responding host an hour ago. I created a volume on an HP SAN then mapped it to the production host. I then went to the production host and refreshed the storage adapter. Still didn't see the volume to create a datastore. I then did a rescan through the web client of just the host's HBA. It timed out after a while then the host showed not responding and the VMs showed disconnected. I was able to add a volume / create a datastore and add to this host over the weekend in about 30 minutes with no issues.

Any help on getting the host to respond as well as get the VMs to connect would be excellent.

THANKS!!
LVL 7
king daddyAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
No SSH, no ability to run the command, you will need to iLo, iDrac from console, I'm afraid.

otherwise it's a restart.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Have you tried restarting the network management agents ?
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Stephen McTigueAssistant Director of Information TechnologyCommented:
Try the following:

Log directly to the host that is connected using the vSphere client. This requires using a local (possibly "root) user name and password on the host.

Once you're logged into the host, right click on the datastore where the vm's are located and choose Browse Datastore... Next, open the directory for each of the servers, locate the .vmx file for the servers. Once you located it, then right click on the file and select Add to Inventory. (This will register the machine with this host and should show as connected in vCenter.) Lastly, restart the host that is not responding and it should come online.

Hope this resolves the issue.
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king daddyAuthor Commented:
I have tried but can't connect using putty and I am not on site. I get a network error: connection refused. I am hoping someone can go there and do it from the DCUI.

Any other way to do it?

Thanks
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king daddyAuthor Commented:
mctigue - the other host does not have any datastores connected right now. During maintenance this weekend the tech disconnected the SAN from the host he took down and didn't reconnect them since I was going there today. I got pulled away and no one is available to go there yet. Further, the VMs are still running without issue so I can't just add them to the other host without powering them off and can't during business hours. I can't migrate due to net mgt agent issues plus no physical connection to the SAN right now.

thanks for replying
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king daddyAuthor Commented:
I had just thought of iLO and may try that but since I will need to deal with other stuff on these hosts I may just wait until after hours and go with the reboot.

Thanks Andrew.
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Mr TorturConnect With a Mentor System EngineerCommented:
Hi,
yes a reboot shoud resolve this. Also if you get the Ilo you should try to restart mgmt agents.
I don't recommend to re-add VM using Add to inventory option if they are already in inventory but greyed out / disconnected. Anyway it may be refused by the system. Even if you power them off.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
do you require any more assistance with this to close out this question.
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