Why is single instance storage important when looking at an email archiving solution?

Say the human resources department at a company of 1,000 people sends out an email with a 1 MB message attachment to every employee. That means up to 1,000 copies of that attachment (at 1 MB each in this case) may ultimately be archived -- demanding up to 1 GB of email archiving

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Email archiving information
Choosing an email archiving strategy

Archive or backup? 
When evaluating email archive systems, the system should have the ability to create one copy of the email and attachment so that only one copy will reside in the archive. That way you potentially save a great deal of storage space over time, and it's much easier for an archive system to track the lifecycle of a single instance and ultimately delete it later on as policies dictate.

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Go back to the beginning of the Email Archiving FAQ Guide.

This was first published in October 2006

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