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Related Best Practices
How to implement snapshots
the snapshot once it's stored.
Employ security features to manage recoverability Traditional backups are usually not recoverable by everyday users, but snapshots can often allow end users to recover the most recent copies of their files without the direct intervention of a storage administrator. While this provides convenience, it also presents a security risk... More...
How to implement disk-to-disk backups
might otherwise be required.
Avoid the use of compression or backup sets When dealing with D2D backups, it's often a preferred practice to backup in native file system formats and avoid the use of vendor-specific backup save sets or compression-centric formats like .zip or .tar. This may demand additional disk space, but eliminates the need for backup or compression... More...
How to improve tape backup performance and reliability
compression and delta differencing to reduce the amount of data that must be backed up. Smaller backups will execute faster, resulting in a shorter backup window, less drive wear, and lower media usage (and lower media costs). Most backup software packages today include some combination of data reduction features, though dedicated deduplication appliances are also...
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FAQ's
Do you think data should be deduplicated while the backup is occurring or after it is complete?
level is that these products can do consistent restores, backups and offloads to tape. And, that the product can do these things while maintaining performance.
From a tactical perspective, I like the post-processing approach. As long as you keep buying disk, you can keep doing backups. It may not be... More...
Are there any instances where data deduplication will not provide any benefits? Superior benefits?
. In that case, you're better off just running differential or incremental backups.
As far as areas in which data deduplication can provide superior benefits, databases have a lot of redundant data and deduplication can have dramatic results. Also, large file systems with small numbers of changes are a good... More...
Why should I encrypt tape?
backup best practices, it should. You should be sending a copy of your backups to a vault site, so therefore you want that added level of protection and should the tape become lost, it won't end up in the wrong hands. Encryption makes the data unreadable without the encryption key.
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