Compaq 108164-003 - ProLiant - 800 White Paper page 11

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HITE APER
(cont.)
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Pentium/100
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P /100 E
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ENTIUM XCHANGE
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Machine Class Compaq ProLiant 4500
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Processor Subsystem
1,2,4 Pentium/100, 512 KByte L2 cache
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System Memory 128 Mbytes
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. . Disk Subsystem Integrated Fast Wide SCSI-2 controller
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EISA SMART Controller
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Network Interface Compaq NetFlex/3 (10BaseT)
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Operating System
Windows NT Server v3.51 + SP4
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Table 4. Pentium/100 Exchange Server hardware configuration
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3000
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2500
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2000
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1500
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1000
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500
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0
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300
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The server very quickly consumes processor resource with a single CPU. Only 500 users can
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be supported with subsecond response time.
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In the single CPU data there is a huge jump in Score above 500 users. The trend carries over
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to the 2P and 4P data as well. This could be due to the L2 cache getting overrun at those
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numbers of users.
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This is a good example of showing the benefit of a second CPU because Exchange is
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becoming processor constrained after 600 users.
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11
S
ERVER HARDWARE CONFIGURATION
LoadSim Score vs. # Users
ProLiant 4500, Pentium/100 - 512KB L2
(lower score is better)
500 600
Number of Users
Figure 2. Relative Score performance of Pentium/100
Pagefile and executables volume : 1x2GB Fast Wide SCSI-
2 drive
Log volume : 2x2GB Fast SCSI-2 drives on port 0, RAID 1
(Array Accelerator enabled)
IS volume: 7x2GB Fast SCSI-2 drives on port 1, RAID 5
(Array Accelerator enabled)
800 1000 1200
1P
2P
4P