Compaq ProLiant 6000 Performance of Microsoft Exchange Server 5.0 on Compaq Pr
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- Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 1
performance aspects of Microsoft Exchange Server 5.0 on Compaq ProLiant Servers, specifically the ProLiant 6000-class of servers. The reader will learn what to expect from such a system under various user loads. Also, he or she will discover other useful information pertaining to Microsoft Exchange - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 2
OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. This publication does not constitute an Server are trademarks and/or registered trademarks of Microsoft Corporation. Performance of Microsoft Exchange Server 5.0 on Compaq ProLiant 6000-Class Servers - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 3
feature sets. From the ProSignia 200 and ProLiant 800/850R to the ProLiant 2500 through the ProLiant 6000 and beyond, Compaq servers represent the ultimate combination of price/performance, manageability, integration, and ease of use. When deploying messaging systems like Microsoft Exchange - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 4
actual performance of a Compaq server product in your environment regarding LoadSim, contact Microsoft Product Support Services or Microsoft on the Web at server computers, they can be treated as quantum events for the purpose of load analysis. In this case, the load a user places on a server - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 5
the delay between the initiation of an action by the user and the server's response to it. LoadSim The main tool used in generating the performance data contained in this paper was the Microsoft Exchange Server User Load Simulation utility called LoadSim. As its name implies, LoadSim is a tool - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 6
ECG052.0897 WHITE PAPER (cont.) 6... Default User Profiles There are three pre-configured profiles built into LoadSim: Light, Medium, and Heavy. Their characteristics are detailed in Table 1. DEFAULT LOADSIM USER PROFILES LoadSim USER ATTRIBUTE ATTRIBUTE DETAIL TEST DURATION Length of a day ( - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 7
in user perception between these two distributions. We do not use the maximum response time here because of the quantum effect, explained in a previous section. In a user-driven client/server system like Microsoft Exchange Server, there is always a statistical chance that several clients will - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 8
for detecting bottlenecks. The principles outlined there are relevant to monitoring the performance of Exchange Server. The Exchange Server Resource Kit contains complete details on Exchange-specific Performance Monitor objects. Configuration of Test Facility The test facility is configured on two - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 9
ProLiant 6000 ProLiant 6000 ProLiant 2500 Figure 1. Exchange Server test lab setup and topology. LoadSim Client Configurations LOADSIM CLIENT HARDWARE CONFIGURATIONS Machine Class System Processor System Memory Disk Subsystem Network Interface Operating System Compaq ProLiant 4500 Dual Pentium - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 10
RAID1 IS: (7) 4.3-GB Drives - RAID5 Compaq NetFlex-3 (100BaseTX) Windows NT Server v4.0 + SP2 Exchange Server 5.0 PROLIANT 6000 HARDWARE CONFIGURATION B Machine Class Compaq ProLiant 6000 System Processor (2) Pentium Pro/200 - 512K Cache System Memory 256 MB Disk Subsystem (2) SMART-2/P OS - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 11
server (CPU, memory and support overhead, case, it is unlikely that the additional cost for a processor is justified. Similarly, a large, high-end RISC-based system may provide performance gains of from five to ten percent, but may cost as much as 200% of the price of a Compaq ProLiant server - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 12
0 500 1000 1500 2000 2500 3000 3200 User Load Figure 2. ProLiant 6000 Response Time (See Appendix for detailed information) Processor Subsystem In general, the processor subsystem is not an area of contention for Exchange servers directly supporting Exchange Mail users. However, certain specialized - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 13
application base is one of many reasons that Compaq has built its entire server line around the Pentium and Pentium Pro processor technologies A further important point is that a "chip" does NOT make a server. Contrary to what competing RISC-based server vendors would like the industry to believe - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 14
papers: • SMART-2 Array Controller Technology (Document number 317A/0797) • Configuring Compaq RAID Technology for Database Servers (Part number 184206-001) • Configuration and Tuning of Microsoft SQL Server 6.5 on Compaq Servers (Document number 415A/0696) The concepts discussed in these white - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 15
I/O generated by access to each of these key data file areas in Microsoft Exchange Server. For the Exchange Server data files (PRIV, PUB, and DIR), the access patterns are random READ and levels and number of drives (See Compaq White Paper Configuring Compaq RAID Technology for Database Servers). - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 16
to disk bottlenecks and architecture issues in Exchange Server. NOTE: The Log files do not incur READ recovery. CONTROLLER CACHING: Microsoft recommends turning off disk controller caching based on battery backup for its cache. When a cache is amply protected, as in the case of the SMART-2, Compaq - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 17
information stores. Rather than retrieving information from disk and incurring disk I/O, Exchange Server uses IS Buffers for better performance. Exchange Server does not use standard NT caching services. During installation of Exchange Server, the Performance Optimizer is run to tune the Exchange - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 18
100 80 MB 60 40 20 0 500 1000 1500 2000 2500 User Load (Exchange MAPI) 3000 Figure 8. Available System Memory at various user loads Pages/Sec Memory: Paging 10 9 8 7 6 5 4 3 2 1 0 500 1000 1500 2000 2500 3000 User Load Figure 9. System Paging at various user loads and hardware configurations - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 19
. • The Pentium Pro has clear advantages over Pentium-based systems running Exchange Server. Pentium-based servers are not recommended for user loads greater than 1000. Disk • Place the database logs on a separate physical volume from that occupied by the Information Service databases. Using the two - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 20
. General • Always run Exchange Optimizer after the initial setup of Exchange Server. Also, run it after changing configuration of the server. • Always ensure that your capacity planning simulations include proper workload characterization. Use the tools available to profile your actual messaging - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 21
ECG052.0897 WHITE PAPER (cont.) 2...1 CONCLUSION The Compaq ProLiant 6000-class server is an ideal deployment platform for Microsoft Exchange Server 5.0 in the enterprise. As this paper demonstrates, the ProLiant 6000 comfortably supports the maximum user loads attainable with the current version - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 22
ECG052.0897 WHITE PAPER (cont.) A : F D T R 2...2 PPENDIX ULL RESPONSE TIMES CONFIGURATION A LoadSim Score (ms) CONFIGURATION B LoadSim Score (ms) CPU INFORMATION CONFIGURATION A % CPU - STORE % CPU - DS % CPU - MTA CPU Avg. Priv. Time CPU Avg. Interrupt Time Avg. Context Switches/sec Avg. CPU - Compaq ProLiant 6000 | Performance of Microsoft Exchange Server 5.0 on Compaq Pr - Page 23
ECG052.0897 WHITE PAPER (cont.) 2...3 MEMORY INFORMATION CONFIGURATION A 500 Avg. Avail. Bytes (MB) 37 Avg. Pages/sec 0.016 CONFIGURATION B 500 Avg. Avail. Bytes (MB) 119 Avg. Pages/sec 0.008 1000 18 0.014 1000 105 0.021 EXCHANGE SERVER INFORMATION CONFIGURATION A 500 1000 IS
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ECG052.0897
August 1997
Prepared By
Internet Solutions
Business Unit
Compaq Computer
Corporation
C
ONTENTS
Executive Summary
........
3
Test Configuration
..........
4
Configuration of Test Facility . 8
Performance
Results
.........................
11
Introduction
........................
11
Disk Subsystem
..................
14
Memory Subsystem
.............
17
Network Subsystem
............
19
Conclusions and
Recommendations
..............
19
Conclusion
...................
21
Appendix: Full
Disclosure of Test
Results
.........................
22
Performance of Microsoft Exchange
Server 5.0 on Compaq ProLiant 6000-
Class Servers
Electronic Messaging and GroupWare applications are quickly becoming ubiquitous in
the business world. Because people must process and share increasing amounts of
information, there is a need for powerful software and hardware products to satisfy the
requirements of these applications. As customers deploy such systems, capacity planning
and optimization become increasingly critical. Being the world’s largest supplier of Intel-
based servers, Compaq is uniquely positioned to be a leader in GroupWare and
Messaging system platforms.
Microsoft Exchange Server has been the focal point of extensive development and testing
by both Microsoft and Compaq. Throughout this activity, Compaq and Microsoft have
worked together to optimize Microsoft Exchange Server performance on Compaq Server
products.
Microsoft Exchange Server is complex and has many features and capabilities. For
system administrators as well as potential purchasers of both Microsoft Exchange Server
and Compaq products, a solid grasp of the performance issues associated with Microsoft
Exchange Server is crucial to the decision-making process.
This white paper contributes to such an understanding by examining various
performance aspects of Microsoft Exchange Server 5.0 on Compaq ProLiant Servers,
specifically the ProLiant 6000-class of servers. The reader will learn what to expect from
such a system under various user loads. Also, he or she will discover 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.