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How SnapManager works with other backup methods

It is best to employ SnapManager technology as a complement to conventional backup processes. See the following topics for more information:

Related topics

SnapManager and your current backup processes  Top

SnapManager complements conventional backup processes. For example, SnapManager backups reside on disk. To archive SnapManager backups to another storage medium, such as tape, you use the same tools and processes you currently employ.

However, some backup processes interfere with SnapManager's ability to back up and restore correctly. It is important that you understand which of your current backup tools and processes must be modified or eliminated when you implement SnapManager.

SnapManager backups are not intended to replace periodic disaster recovery measures, such as archiving to tape or other offline media.

Type of external backup to use with SnapManager  Top

Exchange-aware backup tools (such as NTBackup) can create backups of different types. Generally, SnapManager backups replace these backups. However, if you need to create a backup using an Exchange-aware backup tool on a system with SnapManager installed, you must use only a copy or differential backup.

Attention
Using an Exchange backup tool to create a backup of a type other than copy or differential after you implement SnapManager causes your previously created SnapManager backups to become unusable for up-to-the-minute restores.

The following table describes the backup types.

Backup type

Description

Result

Copy

Backs up all selected files; does not clear archive bit

OK

SnapManager backups unaffected

Normal (full)

Backs up all selected files and clears archive bit

DO NOT USE

Truncates transaction logs; disables SnapManager up-to-the-minute restores

Differential

Backs up all selected files with archive bit set

OK

SnapManager backups unaffected

Incremental

Backs up all selected files with archive bit set and clears archive bit

DO NOT USE

Truncates transaction logs; disables SnapManager up-to-the-minute restores

Exchange files you should back up using a Windows backup utility  Top

SnapManager does not back up all the files commonly used by an Exchange server. You should use a standard Windows backup utility, such as NTBackup, to back up the following items:

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