HP ProLiant 2000 Performance of Microsoft Exchange Server 4.0 on Compaq ProLia
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- HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 1
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 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 2
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 Corporation. Performance of Microsoft Exchange Server 4.0 on Compaq ProLiant Servers First Edition (June 1996) - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 3
Exchange 4.0". This paper is included with theLoadSim 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 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 4
% of Forward % of Move % of Copy % of Delete % of Do nothing DISTRIBUTION LISTS Minimum size Maximum size Average size Cover 100% of users (no overlap) ATTACHMENTS % to Run/Load Mail Attachment (if one exists) INBOX SIZE Inbox Size Limit (# messages) SENDING MAIL New mail (times/day - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 5
sent as a Reply to All Mail sent as a Forward CALCULATED DAILY LOAD (based on these defaults) AVERAGE # RECIPIENTS FOR EACH MESSAGE Table 1. DefaultLoadSim user profile definitions LIGHT 0% 0% 1 No 22KB None 22.94 MEDIUM 4% 2% 5 No 22KB None 66.30 HEAVY 5% 10% 10 No 22KB None 118.89 4.70 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 6
) % of Reply % of Reply All % of Forward % of Move % of Copy % of Delete % of Do nothing Minimum size Maximum size Average size Cover 100% of users (no overlap) % to Run/Load Mail Attachment (if one exists) Inbox Size Limit (# messages) New mail (times/day) Save a copy in Sent Mail Folder? Number - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 7
as a Reply to All Mail sent as a Forward CALCULATED DAILY LOAD (based on these defaults) AVERAGE # RECIPIENTS FOR EACH MESSAGE Table 2. LoadSim user profile definition for this paper 5% 2% 2% 4% 2% 5 No 22KB Yes 5 60% 4% 15% 7% 3% 5% 1 5% 0% 0% 5% 5% 5% 30% 76.76 15.11 4.00 4.10 2.91 4.10 5.08 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 8
Exchange tasks. The read task is the highest weighted task - accounting for over half of the i.e. a lower Score indicates better Exchange Server performance. Only you can determine the acceptable following process. 1. A LoadSim client simulates 100Medium users 2. LoadSim is configured to log data to - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 9
cont.) 9... Figure 1. Exchange Server test network topology. LOADSIM CLIENT HARDWARE CONFIGURATIONS Machine Class Compaq 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 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 10
are graphs showing how the different processor and server products from Compaq affect the performance of Microsoft Exchange Server. The value on the vertical axis is theLoadSim Score. The value on the horizontal axis is the number of LoadSim users. 1P indicates one processor installed in the - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 11
on port 1, RAID 5 (Array Accelerator enabled) Network Interface Compaq NetFlex/3 (10BaseT) Operating System Windows NT Server v3.51 + SP4 Table 4. Pentium/100 Exchange Server hardware configuration LoadSim Score vs. # Users ProLiant 4500, Pentium/100 - 512KB L2 3000 (lower score is better - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 12
the response time improves very little until you get above 800 users, which is where 2P becomes processor constrained. • There is Pentium/133 PENTIUM/133 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 4500 Processor Subsystem 1,2 Pentium/133, 2 Mbyte L2 cache System Memory - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 13
results shown in Figure2 with those of Figure3, it is clear that 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 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 14
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 Exchange Server hardware configuration LoadSim Score vs. # Users ProLiant 4500, Pentium/166 - 2MB L2 3000 (lower score is better - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 15
the number of users exceeds 1000. Interestingly, there is no real apparent bottleneck in the server hardware itself. Pentium Pro/166 PENTIUM PRO/166 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 5000 Processor Subsystem One Pentium Pro/166, 512 Kbyte L2 cache System Memory - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 16
3000 LoadSim Score vs. # Users ProLiant 5000, Pentium Pro/166 - 512KB 2500 2000 1P 1500 Score 1000 500 0 500 1000 Number of Users 1500 Figure 5. Relative Score performance of Pentium Pro/166. • This data illustrates the increased power of the Pentium Pro processor with 32-bit Windows NT - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 17
P5/100 P5/133 P5/166 P6/166 500 0 300 500 800 1000 1200 1500 Number of Users Figure 7. Dual CPU performance comparison. • This data again illustrates the increased power of the Pentium Pro processor with 32-bit Windows NT applications. It also demonstrates the benefit of large L2 cache in - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 18
disks to the array set to increase response time. PENTIUM PRO/166 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 5000 Processor Subsystem 1 Pentium Pro/166, 512 Kbyte L2 cache System Memory 128 Mbytes Disk Subsystem Integrated Fast Wide SCSI-2 controller Pagefile - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 19
in response time. • The benefit increases as the number of users increases. This is because the number of disk I/Os required memory in an Exchange Server computer. Effect of Increasing IS Buffers Aside from the amount of memory required for running Windows NT and Exchange Server, system memory - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 20
PENTIUM PRO/166 EXCHANGE SERVER HARDWARE CONFIGURATION Machine Class Compaq ProLiant 5000 Processor Subsystem 1 Pentium Pro/166, 512 Kbyte L2 cache System Memory LoadSim Score vs. # Users Effect of increasing IS Buffer by 128 Mbytes (lower score is better) 1000 Number of Users 1500 39 MB 167 - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 21
there is no Exchange-specific data to support the claim, the Pentium Pro/166 with 512 Kbyte L2 cache will likely outperform the Pentium Pro/200 with 256 Kbyte L2 cache. • The Pentium Pro demonstrates its benefit with the full 32-bit code of Windows NT and Exchange Server. Disk Subsystem • Place the - HP ProLiant 2000 | Performance of Microsoft Exchange Server 4.0 on Compaq ProLia - Page 22
Memory • 128 Mbytes of RAM is a good amount of system memory to start with for the 500 user range. 256 Mbytes can provide additional benefit. • Monitor the available memory at least 10-15 Mbytes free memory in the system at all times users for a single Exchange Server is 1500. Depending upon your user
W
HITE
P
APER
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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.