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All Archive Data is Not Alike: Page 3 of 3

Just because we call all the data users aren't changing on a daily basis archival, that doesn't mean it's all the same. The 31-day old email that's been replaced with a stub in the user's mailbox and the 15 year old X-ray HIPPA requires you to keep don't need the same SLA and may be better served by different storage systems.
Howard Marks
May 30, 2009

Note this deep archive data is also typically made up of
large objects and these objects are frequently retrieved together.  Boeing
may need to call up all the tail sections of 737s built over a 3-year period to
see which have the old style parts the FAA says need to be replaced or Lucasfilm
may want to call up all the Star Wars Episode XXXIV footage for a new Blu-Ray
special edition.
While all this data could be stored on magnetic disk systems,
with or without MAID, the power, space and periodic migration required could
make another medium more attractive. 
More on this subject next week.

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