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Number of vSphere HA heartbeat datastores less than 2 error, while having more?

Duncan Epping · May 23, 2013 ·

Last week on twitter someone mentioned he received the error that he had less than two vSphere HA heartbeat datastores configured. I wrote an article about this error a while back so I asked him if he had two or more. This was the case, so next thing to do was to “reconfigure for HA” to clear the message hopefully.

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

Unfortunately after reconfiguring for HA the error was still there, next suggestion was looking at the “heartbeat datastore” section in HA. For whatever reason HA was configured to “Select only from my preferred datastores” and no datastores were selected just like in the screenshot below. HA does not override this so when configured like this NO heartbeat datastores are used, resulting in this error within vCenter. Luckily the fix is easy, just set it to “Select any of the cluster datastores”.

the number of heartbeat datastores for host is 1
the number of heartbeat datastores for host is 1

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Server 5.0, 5.1, ha, VMware, vSphere

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Comments

  1. Thomas says

    11 October, 2013 at 02:45

    Hi Duncan
    Thanks for the post. My cluster has 2 NFS datastores and one local datastore, the warning message never goes away for any of the 3 options above.

    Any idea
    cheers
    Thanks

  2. supertekboy says

    7 January, 2014 at 04:15

    Another fix for this same error.
    http://supertekboy.com/2013/07/12/664/

  3. Kumaresh says

    31 May, 2014 at 09:31

    Hi,

    I also faced this issue, and tried “Select only from my preferred datastores” and no datastores were selected but no luck. Then i tried das.ignoreInsufficientHbDatastore as supertekboy said.now the error disappear.
    Thank you!

  4. Tony says

    23 July, 2014 at 00:45

    I am having simular issues, but I have 2 clusters. 1 HA works great. The other shows no datastores to add for HA clustering. Even though the hosts see the datastores. Anyideas?

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About the author

Duncan Epping is a Chief Technologist in the Office of CTO of the Cloud Platform BU at VMware. He is a VCDX (# 007), the author of the "vSAN Deep Dive", the “vSphere Clustering Technical Deep Dive” series, and the host of the "Unexplored Territory" podcast.

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