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markokobal
Enthusiast
Enthusiast

vCloud Director and DPM (Dynamic Power Management)

Hi,

I'm using vCloud Director v5.1, but this issue also appears in v1.5. DPM (Dynamic Power Management) is enabled in a cluster. Some hosts are powered off (standby mode) for the power savings via the DPM. If there is not enough resources to satisfy all conditions (HA, DRS, DPM) on the currently powered-on hosts, then power-on operation (on vApp or VM) via vCloud Director fails. However, If I issue an manual power-on operation via vSphere Client, additional host is automatically powered-on (DPM in action) and after it is online, VM is also powered-on.

Is there any setting to allow vCloud Director to issue ESX power-on commands via DPM and thus allow to power-on vApps and VM's even on DPM-enabled clusters?

-- Kind regards, Marko. VCP5
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krnewell2011101
Contributor
Contributor

Have you tried testing with HA admission control turned off? I have recently started looking into DPM w/vCD and haven't started active testing yet, but at a glance I would assume this is the hangup.

With HA admission control turned on you'll probably hit that wall from the vCD side. If you shut off admission control I would assume it would let your power-on succeed, add too many resources for the existing hosts, and trigger DPM to start another host to reduce contention afterwards based on load rules.

If you have spare hosts (required for DPM already) then admission control shouldn't be a big deal unless you can't sustain the temporary contention you may cause while waiting for a new host to boot up and rebalance.

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