VMware vSphere Fault Tolerance 4 - Manual (Page 13)

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VMware white paper
3.8. Microsoft exchange Server 2007
In this experiment, the Loadgen workload was used to generate load against Microsoft Exchange Server 2007. A heavy user profile
with 1600 users was used. This benchmark measures latency of operations as seen from the client machine. The performance charts
below report both average latency and 95th percentile latency for various Exchange operations. The generally accepted threshold for
acceptable latency is 500 ms for the Send Mail operation. While FT caused a slight increase, the observed SendMail latency was well
under 500 ms with and without FT.
Figure 13. Microsoft Exchange Server 2007 Performance
0
20
10
30
70
60
40
50
80
FT Disabled
FT Enabled
Microsoft Exchange Server 2007
(lower is better)
M
illisec
onds
Send Mail Average Latency
FT traffic:
13 to 20 Mbits/sec
Figure 14. Microsoft Exchange Server 2007 Performance
0
50
200
100
150
250
FT Disabled
FT Enabled
Microsoft Exchange Server 2007
(lower is better)
M
illisec
onds
Send Mail 95 Percentile Latency