Single Instance Storage (SIS) in Exchange Server 2010

MSExchangeTeam blogged about SIS in the old versions of Exchange Server and why it was removed from Exchange Server 2010.

In Exchange Server 2010, there is no more single instance storage (SIS). To help understand why SIS is gone, let’s review a brief history of Exchange.

During the development of Exchange 4.0, we had two primary goals in mind, and SIS was borne out of these goals:

1. Ensure that messages were delivered as fast and as efficient as possible.
2. Reduce the amount of disk space required to store messages, as disk capacity was premium.

Read more at source: http://msexchangeteam.com/archive/2010/02/22/454051.aspx

Cheers,
Anderson Patricio
http://blogs.msexchange.org/patricio
Twitter: @apatricio

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