My organization has a Zimbra server at a managed hosting provider. Our mailstore is about to exceed the 500GB that is available on internal storage. Unfortunately, DAS/NAS/SAN storage at this provider is way too expensive for us. I can think of a couple of options:
1) Relocate archive/discovery mailboxes to a local Zimbra server
2) Use Zimbra HSM to archive mail older than x days to a volume at our headquarters via NFS, sshfs, or something similar.
I think option 1 is ideal for us, but I'm not sure the best way to go about this. Perhaps configure an identical server with the .archive domain and have .archive-bound mail routed here. Would this pose a licensing problem?
Option 2 seems like a bad idea. Too many moving moving pieces, performance considerations, etc. Although the messages stored on the NFS share would be rarely accessed by users, there may be some other implications (e.g. Would overall mail performance suffer if the share went down?)
Halp! I need some guidance.