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  Apr 13, Exchange 2010 Archiving: Dumpster Revealed
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Blog Item(s)

Exchange 2010 Archiving: Dumpster Revealed

Exchange operates with a hidden deleted items folder referred to as the "dumpster." In Exchange 2007, end users can manually purge email in the dumpster, thereby bypassing an organization's legal hold. This was a major legal risk.

Exchange 2010 introduces a new and substantially improved dumpster that fixes this design flaw, and offers additional benefits.

End users can use the dumpster to restore single emails that were deleted by mistake. Here is how it works: When an email is first deleted it moves to the Deleted Item folder. It remains there until the Deleted Item folder is emptied. Next, the deleted email moves into the dumpster where it is held according to a retention policy set by the administrator. Normally the dumpster retention period is set for 30 days, allowing users to change their mind and restore deleted email within that period.

The dumpster retention period can be set for longer periods or an unlimited time, and this is the important benefit to the organization. Organizations that require retention of email for regulatory compliance, for example, can use a dumpster retention period of n years as prescribed by the law. Organizations facing legal discovery can set the dumpster retention to an unlimited period, in effect putting email deletion on hold until the legal case is resolved.

Dumpster retention periods are set on a per-mailbox basis. Thus, if a legal case requires some of a user's email to be retained indefinitely, for example, then all that user's email is retained indefinitely.

Finally, it should be noted that the dumpster has an important role in the new backup strategy adopted from Exchange 2010 onwards. Because Exchange databases are so large, traditional backups and restores have become impractical. Thus, the approach to backup with Exchange is now:

  • Keep one or more live copies of an Exchange database in case the main one gets damaged.
  • Keep copies of emails around for some extended period elsewhere; e.g., in the archive or in the dumpster, so that users can restore a damaged or deleted email if they need to.

... Bob Spurzem

In addition to his role as Ferris analyst, Bob is director of product marketing at Permabit, which offers a grid–based disk storage system.


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We've been in business since 1990-longer than any other analyst firm in our field:

  • Clients include many of the world's largest organizations as well as computer vendors from major corporations to small startups.
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  • Our news service has approximately 10,000 readers and covers more than 2,000 highly specialized announcements annually.
  • Our research team shares many decades of experience in our core competencies.

In short, our technology and industry depth helps you understand today's products, where they've come from, where they're going, and their value.

Have news you want to share with us or product or interest area that you would like us to cover? Send press releases to releases@ferris.com.

Copyright © Ferris Research 2010.


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