Our company is moving over to Zimbra from Domino and we have purchased a completely new server just for Zimbra to run on. The server is the Intel SR1630GP. Now the issues I am having is finding a suitable OS that supports my hardware and that Zimbra works well with. My company has already spent 200k on IT infrastructure in the last 4 months and are reluctant or not willing at all to buy software like RedHat or Suse.
So question, what OS can I use to have completely stable environment for Zimbra and that supports my hardware. I have tried Ubuntu 8.04 (not support for chipset) tried Ubuntu 10.04 (issues with GRUB installing on software RAID 1) am currently downloading Ubuntu 10.10 and OpenSuse 11.3. Can anyone tell me if these two OS's function properly with Zimbra?