Configure HA for cluster with 3 host

[zemotard]

1--> Hi, is it possible to configure a cluster with HA with 3 hosts ?

2--> If yes, how VC chooses an esx to re-start vm, if just one fails ?

Regards

[MR-T · Accepted solution]

Yes you can have a 3 node cluster.

HA will pick the first server alphabetically following a failure.

All the VM's will power on here, and then if DRS is used they'll be balanced.

[zemotard]

ok, so could you explain me the failover capacity option ?

[admin]

That's how many hosts in the farm can fail before there is no remaining capacity to restart VMs. Once it's reached, HA will not try to restart any more VMs.

[zemotard]

1--> In my case, the better choice is to set 2 hosts in failover capacity no ?

2--> A last point, I have drag/drop my host under my cluster. But now, my vm are on same level that my host. Is it normal ?

[admin]

1--> In my case, the better choice is to set 2 hosts

in failover capacity no ?

Yes if you have sufficient capacity to run all of your VMs on one box - that would imply loading no individual ESX host more than 33% though. If you went for 1 host failure allowed you could run them at 66%.

Regardless of what you set the configured failover capacity to be, if you start more VMs than can be run on one host (in your case), then the "Current failover capacity" will automatically be lowered to 1 and this over-rides the configured failiover capacity (and generates warnings in VC).

2--> A last point, I have drag/drop my host under my

cluster. But now, my vm are on same level that my

host. Is it normal ?

Yes.

[MR-T]

Leave the default settings for a 3 node cluster.

The view you're seeing is normal.

If you want to move the machines into a different level, you need to create resource pools.

[zemotard]

My wish is to have:

ESXcluster

-->HostA

-

---

>VM1

-

---

>VM2

-

---

>VM3

-->HostB

-

---

>VM1

-

---

>VM2

-

---

>VM3

Is it possible ?

[admin]

Not really, but it's only a cosmetic issue. The reason they are displayed as they are is that with a DRS cluster they can move dynamically between hosts.

If you want to see all the VMs on a host, click the host, then the Virtual Machines tab.

[zemotard]

cosmetic comestic ... I think this view is more usefull than to clik on each host to see what it's hosting ... no ?

[admin]

The idea is that they aren't tied to any particular host, hence the view.

If you don't want to click on each host, click on the cluster and then click the Virual machine tab, the host each VM is on is listed in that view.

[zemotard]

You are a joker

You can tell me I must to change my method of working

[admin]

Lol. You must change your method of working.

[zemotard]

ok good guy, thanks for your help