insufficient ressources to satisfy ha failover

[zemotard]

Hi, I want to active HA option.

I own 3 ESX (DELL PE 2900 Bi-Pro Quad core 8G of ram)

I have check the option HA, but now I have the popup "insufficient ressources to satisfy ha failover" while each esx is running less 20% of cpu and average 50% of memory.

I wish just to active 1 server for failover.

Could you help me ?

[ilatimer]

Try setting the option on your cluster under HA call Admission Control and set it to Allow virtual machines to be started even if they violate availability constraints.

[masaki]

Which is the Configured Failover Capacity?

[masaki]

You can find any info at:

http://www.vmware.com/pdf/vi3_esx_resource_mgmt.pdf

[zemotard]

Where can I find this ?

[zemotard]

Whith that it's working, but what is the real impact ?

[VirtualNoitall]

Hello,

You need to be aware of the resources available within your cluster to ensure adequate spare capacity in the event of a fail over.

[zemotard]

If I have not enough ressources, some vm could no start in case of failure ?

If I reboot VC, hosts will lose connection with VC, is it a problem for HA ?

Message was edited by:

zemotard

[masaki]

Page 63:

If you have selected the Allow virtual machine to be started even if they violate

availability constraints option when you enable HA, and you later power on more

virtual machines than HA would advise, a message appears and the cluster turns red.

In this case, the current (available) failover level can also fall below the configured

failover level if the number of hosts that have failed exceeds the configured number.

For example, if you have configured the cluster for a one host failure, and two hosts fail,

the cluster turns red.

A red HA cluster still performs virtual machine failover in case of host failure, using

virtual machine priority to determine which virtual machines to power on first. See “Customizing HA for Virtual Machines” on page 107.

[zemotard]

Ok, but when I choose to not start 2 bigger VM, I have always this message ... That means HA doesn't care this parameter ?

[mittim12]

Once HA is configured it does not depend on Virtual Center to function properly.

[masaki]

It's only an alert.

HA will work even with VC down.

[zemotard]

If I uncheck all vm in order to no restart them, HA sould be ok ? no ?

[sipsipi]

How many host failures on your HA config are you allowing for?

If you have 3 boxes, and allow for 1 failure, you need enough resources that the other 2 can handle all virtual machines.

Thus, you have too many resources deployed, or not enough boxes.

Time to ask the boss for more ESX Boxes!

[zemotard]

Yes I'm in this case.

How do HA to deploy vm on each ESX if DRS is not activated ? All vm are restarted on the first ESX ?

[masaki]

VMs are not deployed.

They are still on SAN.

Ha will remove locks from the old HOST and will start them on another HOST

[zemotard]

Ok but If I have 2 available hosts, how HA restart VM when DRS is disabled ? On first host ? on Second one ?

[CKloseFUM]

Ok but If I have 2 available hosts, how HA restart VM

when DRS is disabled ? On first host ? on Second one ?

HA starts the VM's on the first available ESX... there is nor order to configure