For the moment there's a lot of choices for setting up a Linux cluster.
For cluster manager: you can use Red Hat Cluster manager, Pacemaker or Veritas Cluster Server.
The first one has the most momentum, the second one comes by default with RH subscriptions and the last one is very expensive and has a very good reputation 😉
For storage:
– You can replicate LUN's using software raid / md device
– You can use the network using DRBD replication, which offers a bit more flexibility
– You can use Veritas Storage Foundation technology to talk to your SANs replication technology.
Anyone has any recommandations or experience with these technologies?
Best Answer
I'd go with GlusterFS. The latest version 3.x supports geo-replication (long latent pipe type of thing) as well as LAN replication. There's plenty of docs about how to replicate and spread data across the cluster.
I don't like DRDB, because there's a limit on the number of nodes you can use. I think GlusterFS on decent hardware, with a decent bit of network tuning might be just what you're after. Definitely worth a test session.