View this "Best Answer" in the replies below ». Popular Topics in Microsoft Exchange. Which of the following retains the information it's storing when the system power is turned off? Submit ». Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help.
If you have feedback for TechNet Support, contact tnmff microsoft. I have read numerous posts about defragmenting Exchange Databases. And one recurring question is Why? Why would I want to do that? When using backup appliances such as Avamar and AppAssure, they back up the physical database not the actual mailbox space.
The appliances backs up the 70 GB not just the 12 GB. It's wasting space, time and it's space I can use on the server.
Office Office Exchange Server. Not an IT pro? Resources for IT Professionals. Sign in. United States English. Ask a question. Quick access. If you suspend the Unreachable queue, messages won't be automatically resubmitted to the categorizer when configuration updates are detected. To automatically resubmit these messages, you need to manually resume the Unreachable queue.
If you suspend the Submission queue, messages won't be picked up by the categorizer until the queue is resumed. There are other queue properties that are self-explanatory.
You use most of the queue properties as filter options. By specifying filter criteria, you can quickly locate queues and take action on them. For a complete description of the filterable queue properties, see Queue filters. An important queue property that's also worth mentioning here is the MessageCount property that shows how many messages are in a queue.
This property is an important indicator of queue health. For example, a delivery queue that contains a large number of messages that continues to grow and never decreases could indicate a routing or transport pipeline issue that requires your attention. A message in a queue has many properties. Many of the properties reflect the information that was used to create the message. Some of the messages status and information properties are heavily influenced by corresponding properties on the queue.
However, an individual message may have a different value than the corresponding property of the queue. Other properties contains status, time, or other indicators that are updated frequently. The current status of a message is stored in the Status property of the message. A message can have one of the following status values:. Active : If the message is in a delivery queue, the message is being delivered to its destination.
If the message is in the Submission queue, the message is being processed by the categorizer. Locked : This value is reserved for internal Microsoft use, and isn't used in on-premises Exchange organizations.
PendingRemove : The message was deleted by the administrator, but the message was already in the act of being transmitted to the next hop.
The message will be deleted if the delivery ends in an error that causes the message to reenter the queue. Otherwise, delivery will continue. PendingSuspend : The message was suspended by the administrator, but the message was already in the act of being transmitted to the next hop.. The message will be suspended if the delivery ends in an error that causes the message to reenter the queue.
Retry : The last automatic or manual connection attempt for the queue in which this message is located failed. The message is waiting for the next automatic queue connection retry. Suspended : The message was manually suspended by the administrator. All messages in the poison message queue are in a permanently suspended state. There are other message properties that are self-explanatory.
You can use most of the message properties as filter options. By specifying filter criteria, you can quickly locate messages and take action on them. For a complete description of the filterable message properties, see Message filters. Queue Viewer and virtually all of the queue and message management cmdlets are restricted to a single Exchange server. You can view or operate on individual queues or messages, or multiple queues or messages, but only on a specific server.
Exchange introduces the Get-QueueDigest cmdlet that provides a high-level, aggregate view of the state of queues on all servers within a specific scope, for example, a DAG, an Active Directory site, a list of servers, or the entire Active Directory forest.
Note that queues on a subscribed Edge Transport server in the perimeter network aren't included in the results. By default, the Get-QueueDigest cmdlet displays delivery queues that contain ten or more messages, and the results are between one and two minutes old.
For instructions on how to change these default values, see Configure Get-QueueDigest. The following table describes the management tasks you can perform on queues or messages in queues.
This action displays one or more queues on a transport server. You can use the results to take action on the queues. This action displays a summary view of queues across a defined scope servers, DAGs, Active Directory sites, or the entire Active Directory forest. This action temporarily prevents delivery of messages that are currently in the queue. The queue continues to accept new messages, but no messages leave the queue.
This action reverses the effect of the suspend queue action and enables delivery of queued messages to resume. This action immediately tries to connect to the next hop.
Without manual intervention, when the connection to the next hop fails, the connection is attempted a specific number of times after a specific time interval between each attempt. Whether the connection attempt is manual or automatic, any connection attempt resets the next retry time. For more information, see Message retry, resubmit, and expiration intervals.
This action causes the messages in the queue to be resubmitted to the Submission queue and to go back through the categorization process. Note that you can use Queue Viewer to resubmit messages, but only from the poison message queue. To resubmit a message in poison message, you resume the message in Queue Viewer, or by using the Resume-Message cmdlet. This action temporarily prevents delivery of a message. You can use the suspend message action to prevent delivery of a message to all the recipients in a specific queue or to all recipients in all queues.
Manage messages in queues. This action reverses the effect of the suspend message action and enables delivery of queued messages to resume. You can use the resume message action to resume delivery of a message to all the recipients in a specific queue or to all recipients in all queues.
This action permanently prevents delivery of a message. You can use the remove message action to prevent delivery of a message to any recipients in a specified queue or to all recipients in all queues. You can also configure the remove message action to send a non-delivery report NDR to the sender when the message is removed. This action copies a message to the file path that you specify. The messages aren't deleted from the queue, but a copy of the message is saved to a file location.
This enables administrators or officials in an organization to later examine the messages. Before you export a message, you need to suspend the message in the queue so that typical delivery doesn't continue during the export process. How did you go about it? Any good resources for me to get started on that? Why is it that my Exchange Servers will become so heavily fragged then?
I don't store files on the DB partitions, and these are the most heavily fragmented parts. But, when I run Diskeeper, the system will go to a healthy state. My exchange server was hosting about GB of apps and data due to the unexpected demise of another 'server'. I have moved about GB of this GB off the exchange server. There are still about 60GB of user profiles on the drive. My thinking was that the information store is defragmented nightly online defrag , and that an offline defrag of the exchange info.
Hence the information store should not be particularly fragmented?? To defrag the file system, I can either use windows defrag tool, which does not allow you to specify directories to exclude, or a 3rd party disk defragging tool. Either way, I was hoping there was a definitive answer.
Anyway - thanks all for the input - i'll get a copy of diskkeeper and do a defrag of the file system excluding the exchange db. I'll see how that fares, and if no real performance increase is realised then I'll run an offline defrag. To be honest I don't think that is your issue. You mentioned you also have a SQL system on this mail server that has the database on the same volume as the mail databases and trans logs.
With Exchange and SQL both on the same disks - it is very likely that you are taxing these disks because you have too much running on the system. You should put the SQL database on a different system or at least on a different disk set.
Also the split the databases for exchange away from the trans logs, queues, etc. You will see better performance. To measure this, run perfmon to a trace log for 2 hours during normal busy hours. Then view the results to get the average for this counter for the 2 hour period. Then you can tell how busy the system is. If this counter is above 25ms Exchange stopped responding and it was not possible to dismount info store so i had to reboot. The overall health of volume D: is degraded.
The overall health is at "Warning" level for the following reasons: 1. The volume is heavily fragmented. The average number of fragments per file is 1. In any case, I believe that this will be the first step in recovering exchange performance, and reducing the load on the disks.
Thanks everyone for the input.
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