ESX 4.1 Configuration Issues after VCenter 5.1u1 upgrade ?


I got this error / warning in all of my ESX 4.1 433742 hosts after I have successfully upgraded the VCenter 5.1u1

The number of vSphere HA heartbeat datastores for this host is 1 which is
less than required 2

ESX issue
What should I do to fix that issue as per this article:

One and only datastore
should I put check box in that one and only data store ?

I don't want to create any unwanted downtime by any chance.
Senior IT System EngineerIT ProfessionalAsked:
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AkshayNaikConnect With a Mentor Commented:
ESXi 5.0 and later is required for HA datastore heartbeating. This issue occurs if there is no redundancy in shared storage heartbeat (that is, at least two shared datastores on each host in the cluster).

As you have only one datastore hence you need to disable the HA error message. Perform the below steps to disable the same :-

- Log in to vCenter Server.
- Right-click the cluster and click Edit Settings.
- Click vSphere HA > Advanced Options.
- Under Option, add an entry for das.ignoreInsufficientHbDatastore
- Under Value, type true.
- Click Cluster Features.
- De-select Turn on vSphere HA and click OK.
- Wait for all the hosts in the cluster to deconfigure HA, then right-click the cluster and click Edit Settings.
- Click Cluster Features.
- Click Turn on vSphere HA.
- Click OK.
Senior IT System EngineerIT ProfessionalAuthor Commented:

Does this step "De-select Turn on vSphere HA and click OK." causing any down time to the production VM ?
No. it will not cause any downtime for production VM.
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