Document ID: 259794
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What is the 'Enable single instance backup for message attachments' option in Backup Exec 9.x , 10.x,11,12,12.5 and how can it be enabled?
Details:
Enable single instance backup for message attachments (for mailbox and public folder backups only) is one of the new features that was introduced in VERITAS Backup Exec (tm) 9.x for Windows Servers.
Enabling this option will back up only a single copy of all identical message attachments.
When an identical attachment is found, a reference to the attachment is retained and the actual attachment is backed up at the end of the backup set.
Enabling single instance backup for message attachments may increase backup performance since duplicate attachments are backed up only once.
Disable this option if you want each identical copy of a message attachment backed up and kept in order on the backup set.
This option can be accessed from Tools | Options | Job Defaults | Exchange for 9.x (Figure 1).

Figure 1
 

This option can be accessed from Tools | Options | Job Defaults | Microsoft Exchange for 10.x (Figure 2)
Figure 2
 

This option can be accessed from Tools | Options | Microsoft Exchange   for 12.5x (Figure 3).
Figure 3
 


This option can  then be accessed from Backup Job Properties  | Microsoft Exchange   for 12.5.x (Figure 4)
Figure 4
 


NOTE: If the backup job does not run to completion, the message attachments may not be included in the backup set. Rerun the backup until it is successfully completed. If the incremental backup method was used, running the job again will not back up the same messages and attachments. You must run a full or copy backup to ensure that all messages and attachments are backed up completely.







Products Applied:
 Backup Exec 10.0, 10.0 5484, 10.0 5520, 10d (10.1), 10d (10.1) 5629, 11d (11.0), 12.0, 12.5, 9.0, 9.1
Last Updated: February 26 2010 04:00 PM GMT
Expires on: 365 days from publish date
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Subjects:
 Backup Exec
   Application: Backup, How To

Languages:
 English (US)

Operating Systems:
Windows 2000

Advanced Server, Advanced Server SP1, Advanced Server SP2, Advanced Server SP3, Advanced Server SP4, Datacenter Server SP1, Datacenter Server SP2, Datacenter Server SP3, Datacenter Server SP4, Server SP1, Server SP2, Server SP3, Server SP4

Windows NT

4.0 Server SP6a, 4.0 Workstation SP6a

Windows Server 2003

DataCenter, Enterprise Server, Standard Server, Web Server

Windows Small Business Server 2003

Premium Edition, Standard Edition