Troubleshooting

Migrating Exchange 2010 To Dell Advanced Infrastructure Manager Environment
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Log Latencies
Log writes are indicators of the time taken to write log buffers to log files, and are indicators of active
copy performance. The log writes are sequential, and hence these transactions should be faster. The
threshold is 10 ms, and measured values are within the acceptable range. Log reads indicate the
typical time to read from a log file, and indicate log replay performance. These values are within the
desired range. The threshold is 200 ms. The Log Record Stalls indicate whether or not log records are
being written to log buffers. If this value exceeds the threshold of 10/sec, then the log buffers are full.
The values are within limits. Figure 10 shows the results for Exchange database Log read latencies and
Figure 11 shows the results for Exchange database Log write Latencies in case of all the three
scenarios.
Figure 10. Exchange 2010 database log latencies
Figure 11. Exchange 2010 database log latencies
From the above figures it can be seen that the read and write latencies have increased in scenario 3.
However, the latencies are well below their specified targets and should not impact Exchange
performance.