Quorum best pratices on 4 node cluster

[larsjohansen5]

Hi,

I have a customer with 3 nodes in the same cluster, on the same location.

What are best pratices when inserting a 4th node? Should I use all of them as managers and put up a failover manager.

Or should I just use 3 as managers ?

What are pros and cons?

Greetings,

[ftepe]

Hi,

you should use 4 physical + FOM = 5 managers...

2 Nodes can fail (e.g. seperatet in 2 locations).

I don't think using 3 physical + FOM is supportet because it should be an odd number of managers...

But when you add the node, the best practice analyser will tell you what to do :)

[Bart_Heungens]

Hi,

Indeed a FOM is only  possible and supported with 2 or 4 nodes... In the other cases you cannot add a FOM inthe cluster...

And you need in normal conditions 3 or 5 managers...

Kr,

Bart

[Emilo]

I would use 3 managers if these are in one site.

5 Managers are awfully chatty and really dont provide much more of a benifit.