IBM adds dedupe to Tivoli Storage Manager

IBM has announced a major release of its Tivoli Storage manager backup, archive and compliance product, adding scalability to up to a billion data objects, up to 3X faster backup speeds, and de-duplication. TSM 6.0 has an integrated DB2 engine that doubles the number of storable data objects with the potential to manage a …

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Posted Monday 9th February 2009 06:50 GMT

Anonymous Coward

SnapMirror to tape ... #

SnapMirror to tape is only useful for migrating an initial replica. If you use it to make backups (which NetApp explicitly don't support), you can only make a full backup of the entire volume, including all historical snapshots, and you don't even get a decent catalogue.

NetApp's D2D2T approach is still missing two major pieces of the puzzle:

* The ability to send snapvault deltas to tape

* A decent catalogue integrated into Protection Manager.

At which point, they will eat IBM and Symantec's ILM lunch.

Posted Monday 9th February 2009 10:09 GMT

Mostor Astrakan

De-duplication ratios? #

There may be a good reason why IBM is somewhat reticent in specifying the space saved by de-duplication. It depends on your data. If you have no duplicates in your data, then you will gain nothing. I like IBM's approach better than that of a better-unnamed sales rep who tried to convince me that de-duplication would save me up to 80% storage, even though no two of our servers were even running the same level of OS. While on the subject of specifying storage space: I'm also annoyed by tape drive manufacturers who happily market their tape drives as being capable of storing twice their native amount of data because of compression. Give me bloody numbers I can work with, you morons!

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