Indexer server performance vs indexer cluster

[Adpafer]

Hi Everybody,

Could you pls explain which works faster - to have 1 indexer server, high performance (48CPU, 128GB) or 2 indexers in cluster (each 24CPU, 64GB)?

thanks for reply.

regards, pawelF

[gcusello]

Hi @Adpafer ,

you can compare one high performance (48CPU, 128GB) indexer with two medium size (each 24CPU, 64GB) indexers without cluster, and the performaces are more or less the same.

You cannot compare one indexer with two clustered indexers because, in the second case, you have also High Availability performances that obviously you don't have with one server.

Anyway, I always hint more systems than one, even if not clustered.

Obviously clustered is better!

Ciao.

Giuseppe

[richgalloway]

It depends.  Faster at what?  Assuming the same CPU in both cases, both will run at the same speed. When you have more than one indexer with data distributed among them, searches will be faster because of parallel processing.  This benefit works with both clustered and independent indexers.

Clustering of indexers is for data protection/redundancy rather than for speed.

There no doubt is some overhead in a cluster for replicating data, but I've not seen any data about how much that affects performance.