Disk Subsystem - Compaq 108164-003 - ProLiant - 800 White Paper

444A/0696
W P
HITE APER
(cont.)
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There is consistency in the relative performance of both the 1P and 2P data.
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Four CPU data is omitted because it provides no additional benefit in this scenario.
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Disk Subsystem

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Effect of Number of Spindles
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The basic idea with a disk subsystem is to make disk I/O as fast as possible. One good way to do
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this is to have several spindles (disks) spinning at the same time connected to a Compaq SMART
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Array Controller.
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For related information see the Compaq white paper, 'SMART-2 Array Controller Technology'
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or the Compaq technote, 'Configuring Compaq RAID Controllers for Database Servers'.
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This concept applies to Microsoft Exchange Server. Table 8 describes the hardware used in this
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test. Figure 8 depicts the benefit of adding disks to the array set to increase response time.
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P P /166 E
ENTIUM RO
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Machine Class Compaq ProLiant 5000
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. . Processor Subsystem 1 Pentium Pro/166, 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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. . PCI SMART-2 Controller
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. . Network Interface Compaq NetFlex/3 PCI (10BaseT)
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Operating System Windows NT Server v3.51 + SP4
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Table 8. Pentium Pro /166 Exchange Server hardware configuration
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18
S
XCHANGE ERVER HARDWARE CONFIGURATION
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)