I have one MS exchange server with over 2000 mailboxes. I use Symantec Veritas NetBackup to do all my backups.
The Exchange mail storage groups are devided into 9 groups, so - I have 9 storage groups, each with a single database in it.
A full backup of all the Information stores takes just under two hours, however when I do a full backup of all the mailboxes, it takes close to 19 hours.
My question is this:
Do I have to do mailbox backups to have the ability to do single mailbox restores, or single email restores?
Can I do this with only doing Information store backups?
Is there a best practice for doing mailbox backups?
Please give some advice.