Blackbe;rry Enterprise Server 4.1 User manual

BlackBerry Enterprise Server for
Microsoft Exchange
Version 4.1 Service Pack 6
Technical Advisory: Impact of Supporting Remote Message
Searches on the BlackBerry Enterprise Server
©2008 Research In Motion Limited. All rights reserved. www.rim.com

BlackBerry Enterprise Server for Microsoft Exchange
Technical Advisory: Impact of Supporting Remote Message Searches on the BlackBerry
Enterprise Server 2 of 4
Last saved: 14/08/2008
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Overview
BlackBerry®Enterprise Server version 4.1 SP6 supports remote message searches on
BlackBerry devices that are running BlackBerry®Device Software version 4.5 or later. Users can
search for email messages that are located on the organization’s messaging server from their
BlackBerry devices. By default, this feature is turned on. You can turn off this feature using the
BlackBerry Manager.
This document outlines the expected impact of supporting remote message searches on the
BlackBerry Enterprise Server.
Test conditions
The server hosting the BlackBerry Enterprise Server used the following hardware and operating
system:
•2.66 GHz Dual-Core Intel®Xeon®processor 5150
•2 logical processors
•4 GB of memory
•2 x 33.9 GB SAS drives, RAID 1
•Windows Server®2003 SP2
The tests were performed with 2000 users. Each user performed one remote message search
each day. The tests were conducted under certain lab conditions; the results experienced in your
organization’s environment might be different.
Results
Impact on the BlackBerry Enterprise Server
The Average %Processor Time on the BlackBerry Enterprise Server was approximately 16%.
Impact on the Microsoft Exchange server
The test results indicate that the impact of users performing remote message searches from their
BlackBerry devices is similar to the impact of users performing remote message searches from
Microsoft®Outlook®. If you did not turn on full-text indexing on your organization’s Microsoft®
Exchange server, remote message searches for text within the bodies of messages can result in
a significant number of read operations on the hard disk, which impacts performance.
The impact on the Microsoft Exchange server depends on various factors in your organization’s
environment, including the average size of user mailboxes, and the number of messages and
total disk storage for each user mailbox.

BlackBerry Enterprise Server for Microsoft Exchange
Technical Advisory: Impact of Supporting Remote Message Searches on the BlackBerry
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BlackBerry Enterprise Server for Microsoft Exchange
Technical Advisory: Impact of Supporting Remote Message Searches on the BlackBerry
Enterprise Server 4 of 4
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Document ID: 19871986
Last Modified: July 9, 2008