I hope I can help some:
As far as I see ZCS Archiving does not implement the concept of retention time.
Originally Posted by r8escjohn
What you could do, is use a new archiving mailbox for each user every month or year (or what suits you best). Then after three years you can delete all archiving mailboxes that are older than 3 years.
To the Zimbra guys: correct me if it is not possible to use several archiving mailboxes over time per user.
The archives are just mailboxes you cannot log in to.
- Can I transfer the e-Mail archive to a Tape based media for off-site backup?
You could make a seperate backup for those mailboxes and move those backups to tape.
Not sure about this one.
- Does ZCS Archiving process the calendar data also? It is my understanding that we need to archive that data also for the same amount of time.
Depends on the number of mailboxes. But basically you do not need a seperate server.
- I assume that ZCS Archiving require a separate box. Is that correct?
Yes, you have to configure/activate for each account seperately.
- Can I archive selective e-mail accounts or can I only archive all accounts?
Hope to have helped