Troubleshooting

Migrating Exchange 2010 To Dell Advanced Infrastructure Manager Environment
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Exchange queue lengths
This section discusses the performance in terms of various queue lengths. The copy queue length
measures the number of logs that need to be copied from the active to the passive log folder, and
should be below. The replay queue length is the number of logs that are waiting to be replayed to the
passive copy, and the target value of this counter should be less than 5. Figure 14 shows the results for
these two counters. Both counters were observed within limits during the three test scenarios.
Figure 14. Queue length - mailbox
The number of submitted messages to the hub transport layer but not processed is indicated by the
‗Messages Queued for Submission‘ counter. This number is well within the threshold value. The total
messages queued for delivery in all queues is indicated by Aggregate Delivery Queue Length (All
Queues) and must be less than 3000. ‗Active Mailbox Delivery Queue Length‘ represents the number of
messages in active remote and mailbox delivery queues and this counter must be less than 250.
The submission queue should be less than 100 and it is represented by ‗Submission Queue Length‘
counter. The retry mailbox delivery queue consists of messages being attempted to be delivered to a
remote mailbox, indicated by ‗Retry Mailbox Delivery Queue Length‘; it should be less than 100. All the
queue lengths are optimal for all the three scenarios as shown Figure 15.