When a mail file with an attachment is addressed to 2 or more of your
exchange server clients, the attachment is stored only once and, with
your NetBackup setting, backed up only once.
If you've a lot of multiple-recipient mail (same exact, came into your
server in one blob, mail) with attachments, this setting can help. My
exchange server folks think they do this a lot, but in practice I see
little or no effect on backup/restore times.
Mailbox backup is snail-slow compared to DB backups.
cheers, wayne
Kilpatrick, Mark wrote, in part, on 4/26/2006 11:19 AM:
>
> What happens if I enable the option of ?single instance backup for
> message attachments? under exchange field of client properties. I am
> currently using mailbox backups but they take a long time. What will
> be different in a mailbox backup if I enable this option? How will
> backup time and restore time of mailboxes be effected.
>
> Single Instance Storage is used by our exchange server.
>
>
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