Compaq ProLiant 5000 Performance of Microsoft Exchange Server 4.0 on Compaq Pr
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- Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 1
crucial to understand so the proper decisions can be made. This white paper covers various performance aspects of Microsoft Exchange Server 4.0 on Compaq ProLiant Servers, specifically the ProLiant 4500 and the ProLiant 5000. Fundamentally, this paper should provide the reader with an expectation of - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 2
and Trademark Office. Other product names mentioned herein may be trademarks and/or registered trademarks of their respective companies. ©1996 Compaq Computer Corporation. All rights reserved. Printed in theU.S.A. Microsoft, and Windows NT, are trademarks and/or registered trademarks of Microsoft - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 3
utility, and they can both be found on the Microsoft Exchange Server CD in the \SUPPORT\LOADSIM directory. The operation ofLoadSim users is governed by aLoadSim profile, which is stored on disk as a .SIM file. This profile controls things like how long aLoadSim 'day' is, how many email messages to - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 4
444A/0696 WHITE PAPER (cont.) 4... Default User Profiles There are three pre-configuredLoadSim profiles which are built intoLoadSim: Light, Medium, and Heavy. DEFAULTLOADSIM USER PROFILES LoadSim USER ATTRIBUTE ATTRIBUTE DETAIL TEST DURATION Length of a day (hours) READING MAIL New mail ( - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 5
Excel attachment ( upsXLatt.msg) Embedded Excel object ( upsXLobj.msg) SCHEDULE+ CHANGES Changes per day Update Free/Busy information? Average Schedule File Size PUBLIC FOLDERS Folder activity CALCULATED DAILY LOAD (based on these defaults) TOTAL MAIL RECEIVED PER DAY CALCULATED DAILY LOAD - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 6
444A/0696 WHITE PAPER (cont.) 6... User Profile Definition for This Paper The actual LoadSim user profile used in these tests is based on theMedium user profile. In the following table, deviations from the standardMedium profile are in bold. LOADSIM USER PROFILE FOR THIS PAPER LoadSim USER - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 7
upsWDatt.msg) Excel attachment ( upsXLatt.msg) Embedded Excel object ( upsXLobj.msg) SCHEDULE+ CHANGES Changes per day Update Free/Busy information? Average Schedule File Size PUBLIC FOLDERS Public folder tasks? Number of times/day to open public folders % of time to open active folders Read old - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 8
444A/0696 WHITE PAPER (cont.) 8... LoadSim Score The data point resulting from aLoadSim run is called theScore. The LoadSim Score represents a weighted average of the 95th percentile Exchange client response time (in milliseconds) of the various Exchange tasks. The read task is the highest - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 9
ProLiant 2000 System Processor Single Pentium/100 System Memory 64 Mbytes Disk subsystem 1GB Fast SCSI-2 Network Interface Compaq NetFlex/2 (10BaseT) Operating System Windows NT Workstation v3.51 + SP2 Table 3. LoadSim client hardware configurations PERFORMANCE RESULTS Introduction - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 10
a bottleneck, then adding more of that resource will not help the problem. In all likelihood, it will merely amplify the existing weakness in showing how the different processor and server products from Compaq affect the performance of Microsoft Exchange Server. The value manual tuning was done. - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 11
on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 (10BaseT) Operating System Windows NT Server v3.51 + quickly consumes processor resource with a single CPU. Only 500 users can be supported withsubsecond response time. • In the single CPU data there is a huge - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 12
port 0, RAID 1 (Array Accelerator enabled) IS volume: 7x2GB Fast SCSI-2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 (10BaseT) Operating System Windows NT Server v3.51 + SP4 Table 5. Pentium/133 Exchange Server hardware configuration LoadSim Score vs - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 13
a single Pentium/133 easily outperforms two or four Pentium/100 CPUs. The server is less quick to consume processor resource. 800 users can easily be supported with subsecond response time. In this data there is not the huge jump in Score as exhibited by the Pentium/100. This is possibly because - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 14
: 7x2GB Fast SCSI-2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 (10BaseT) Operating System Windows NT Server v3.51 + SP4 Table 6. Pentium/166 less quick to consume processor resource. 800 users can easily be supported with subsecond response time. - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 15
166 PENTIUM PRO/166 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 5000 Processor Subsystem One Pentium Pro/166, 512 SCSI-2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 PCI (10BaseT) Operating System Windows NT Server v3.51 + SP4 - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 16
attributed to better performance of the disk subsystem. • The server is less quick to consume processor resource. 1000 users can easily be supported with subsecond response time. • Interestingly, there is no real apparent bottleneck in the server hardware itself. However, the gradual slowdown trend - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 17
444A/0696 WHITE PAPER (cont.) 1...7 LoadSim Score vs. # Users 1P CPU Comparison 3000 (lower score is better) 2500 2000 Score 1500 1000 500 0 300 500 800 1000 1200 Number of Users Figure 6. Single CPU performance comparison. 1500 P5/100 P5/133 P5/166 P6/166 3000 LoadSim Score vs. - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 18
time. PENTIUM PRO/166 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 5000 Processor Subsystem 1 Pentium Pro/166, 512 Kbyte -2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 PCI (10BaseT) Operating System Windows NT Server v3.51 + - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 19
444A/0696 WHITE PAPER (cont.) 1...9 Score 4000 3500 3000 2500 2000 1500 1000 500 0 500 LoadSim Score vs. # Users # RAID 5 Drives in Store Volume (lower score is better) 7 drvs 3 drvs 1000 Number of Users 1500 Figure 8. Performance benefit of adding disks to an array. • Adding disk spindles - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 20
on port 0, RAID 1 (Array Accelerator enabled) IS volume: 3x2GB Fast SCSI-2 drives on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 PCI (10BaseT) Operating System Windows NT Server v3.51 + SP4 Table 9. Pentium Pro /166 Exchange Server hardware configuration In - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 21
perform exceptionally well. • Although there is no Exchange-specific data to support the claim, the Pentium Pro/166 with 512 Kbyte L2 cache will Place the database logs on a separate physical volume from the Information Service databases. Using the two ports of a SMART controller for this works - Compaq ProLiant 5000 | Performance of Microsoft Exchange Server 4.0 on Compaq Pr - Page 22
444A/0696 WHITE PAPER (cont.) 2...2 • The log volume mustalwaysbe fault tolerant. Due to the sequential write-only nature of the log volume, many disks in a RAID set to not provide a significant benefit. Two high capacity disks mirrored (RAID 1) is a configuration that provides good sequential
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444A/0696
June 1996
Prepared By
Os Development
Compaq Computer
Corporation
C
ONTENTS
Test Configuration
..........
3
Introduction
.........................
3
LoadSim
..............................
3
Performance Monitor
.............
8
Configuration of Test Facility . 8
Performance
Results
..........................
10
Introduction
........................
10
Processor Subsystem
...........
10
Disk Subsystem
...................
18
System Memory
...................
19
Conclusions and
Recommendations
...............
21
Performance of Microsoft Exchange
Server 4.0 on Compaq ProLiant Servers
Electronic messaging is consistently becoming more pervasive in the business world. As
people must process increasing amounts of information, there is a need for powerful
software and hardware products to satisfy the requirements imposed.
To fill the need for a powerful messaging software product, Microsoft has created
Microsoft Exchange Server 4.0. This product has been the focal point of extensive
development and testing efforts involving the commitments of both Microsoft and its
partners. During this time, Compaq and Microsoft have worked together to optimize
Microsoft Exchange Server on Compaq System products.
Microsoft Exchange Server is enormously complex, with many features and capabilities.
One important part of understanding the product is understanding its performance. For
system administrators and potential purchasers of both Microsoft Exchange Server and
Compaq products, this aspect of Microsoft Exchange Server is crucial to understand so
the proper decisions can be made.
This white paper covers various performance aspects of Microsoft Exchange Server 4.0
on Compaq ProLiant Servers, specifically the ProLiant 4500 and the ProLiant 5000.
Fundamentally, this paper should provide the reader with an expectation of how
Microsoft Exchange Server will perform on a Compaq ProLiant under various user
loads. Furthermore, the paper should uncover other useful information pertaining to
Microsoft Exchange Server configuration and performance tuning, as well as CPU,
RAM, and disk utilization on Compaq ProLiant servers. Ultimately, this paper should
help the potential purchaser make good decisions about which Compaq products to
purchase in order to satisfy the requirements of his or her business needs.