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BlackBerry Enterprise Server for Microsoft Exchange

Technical Advisory: Impact of Supporting Remote Message Searches on the BlackBerry

Enterprise Server

Overview

BlackBerry

Enterprise Server version 4.1 SP6 supports remote message searches on

BlackBerry devices that are running BlackBerry

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

•

2 logical processors

•

4 GB of memory

•

2 x 33.9 GB SAS drives, RAID 1

•

Windows Server

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.

Last saved: 14/08/2008

www.rim.com

Device Software version 4.5 or later. Users can

Xeon

processor 5150

2003 SP2

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