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Vol. 10 Num. 2 April 2011

Exchange 2010 and storage systems

The latest version of Exchange Server has some significant changes that will impact the storage supporting the mail system. By Brien M. Posey With Exchange Server 2010, Microsoft Corp. made some major changes to the database structure that underlies the email application. These architectural changes have a significant impact on planning for Exchange Server's data storage requirements. The biggest change Microsoft made was eliminating single-instance storage (SIS). Previously, if a message was sent to multiple recipients, only one copy of the message was stored within the mailbox database. User mailboxes received pointers to the message rather than a copy of the entire message. The elimination of single-instance storage means that when a message is sent to multiple recipients, each recipient receives a full copy of the message. In terms of capacity planning, the overall impact of this change will vary depending on how many messages include attachments. Text and HTML-based messages are typically small and will have a minimal ...

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Features in this issue

  • Thin provisioning in depth

    by  Stephen Foskett

    Thin provisioning can help you use your disk capacity much more efficiently, but you need to get under the hood to understand how the technology might work in your environment.

  • Exchange 2010 and storage systems

    by  Brien Posey

    With Exchange Server 2010, Microsoft made some significant changes to the email app's database structure, and those changes may also affect the storage it resides on.

  • Virtual disaster recovery

    by  Lauren Whitehouse

    Whether used singly or combined, server virtualization and storage virtualization are making an impact on IT's ability to deliver disaster recovery, and to do so cost effectively.

Columns in this issue

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