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Storage Vendor Humpty Dumpty: Page 2 of 2

Only files that have not been accessed for a period of time will be processed, and, in addition to eliminating duplicates, the process will also compress inactive files, including those that are being deduped.

Compared to NetApp's de-dupe (formerly A-SIS), this is a lower-risk, lower-reward mechanism that can't reduce the space occupied by similar files.

Amazingly enough, Windows Storage Server has had single instance storage and file-level compression for years without getting any credit.

— Howard Marks is chief scientist at Networks Are Our Lives Inc., a Hoboken, N.J.-based consultancy where he's been beating storage network systems into submission and writing about it in computer magazines since 1987. He currently writes for InformationWeek, which is published by the same company as Byte and Switch.