I'm currently planning an upgrade of our Citrix environment to 7.x. I also have VMware and a Nimble SAN. I'm wondering what is the best way to setup the datastores for the new servers.

I've heard a lot of recommendations for bigger datastores to hold more VMs as opposed to one datastore for one VM. Is there any performance issues/negatives with placing my Citrix session hosts in one datastore?

The admin that setup the SAN, way before my time, just kinda threw VMs in random datastores. Some are one vm to one datastore. Others have multiple VMs.

Any suggestions are appreciated.