hi all, i'm going to install zimbra on a HP DL580G5 2QUADCORE 20GBRAM SCSI/SAN machine on ESX.
The purpose is to have up to 1000 users in a 64bit ubuntu installation.

My question is: does make sense to plan a multiserver installation following the guide (3 servers)?
does this improve performances instead of single installation ?
Is it a good choice instead of dedicated hardware ?

thanks for any help