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... email, spam and malware control, archiving, e-discovery, information leak prevention, unified communications, instant messaging, SharePoint, and mobile communications...
|Daily Digest: March 3, 2010|| |
|Archiving, E-Discovery, & Compliance|
|Email, Messaging & Collaboration|
|Blog Item(s) & Announcements|
Exchange 2010 Archiving #1: No SIS
This is the first of a series of bulletins on important features of Exchange archiving, namely: single instance storage, retention management, PST management, mailbox size, multi-mailbox search, and item-level restore. Beginning with Exchange 2010, many small and medium-size organizations may find that sufficient features are included, so that third-party archiving tools are no longer necessary.
One of the lesser-known changes to Exchange 2010 is the removal of single instance storage (SIS). The reason for this is related to an architectural change, disk I/O performance, and the availability of cheap disk.
There tends to be a trade-off between better disk I/O performance and reduced storage capacity. Architecturally, Exchange 2010 introduces a new per-mailbox table structure that replaces the original per-database table structure. The original per-database table structure was optimized for SIS, but disk I/O suffered. The new per-mailbox table structure improves disk I/O, but without SIS.
In place of SIS, Exchange 2010 uses compression. Only large, redundant attachments files truly benefit from SIS; otherwise, compression delivers roughly the same volume of data as SIS.
For further information, see this Exchange team blog discussion.
... 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.
Determining Retention Policy for Electronic Documents
It is very difficult for an organization to determine its retention policy for electronic documents. This defers the purchase and implementation of archiving and related technologies.
Further information is here. Sponsorship starts at $5,995.
To order your sponsorship, contact David Ferris at email@example.com or +1 415 367 3436.
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