VMware - persistent "Host memory status" alarm in vSphere

whens the last time you've updated the HP ESXi stuff? There could be a bug in thier HW pack that's been resolved, or provides more info.

I experienced the same issue and this article solved it. I ended up having to perform all 9 steps.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2011531

To resolve this issue, you must clear warnings and errors from the Hardware Status tab in VMware vCenter Server.

To clear warnings and errors from the Hardware Status tab:

1. Go to the Hardware Status tab.
2. Click the System event log view.
3. Click Reset event log.
4. Click Update. The error clears.
5. Click the Alerts and warnings view.
6. Click Reset sensors.
7. Click Update. The memory clears.

Note: If the error does not clear, connect, connect to the host via SSH. For more information, see Enabling root SSH login on an ESX host (8375637).

8. Run this command to restart the sfcbd service:
   services.sh restart

   Run this command to restart the service in ESX:
   /etc/init.d/sfcbd-watchdog restart

9. Click Update. The error clears.