It's dependent on the total I/O load on the server. Export-mailbox/new-mailboxexportrequest are based on the new "mailbox replication service" which, according to my understanding, uses a direct-to-the-EDB technology. It's MUCH faster than the old methods used and therefore puts a correspondingly higher I/O load on a server.
User-level MAPI is throttled in Exchange 2010, so you are correct - that would have less of an impact on a server. Without having funding to run performance tests, I have no clue as to what the total wall-clock difference might add up to be. That would be dependent on lots of factors, as I'm sure you are aware. Doing an export against a passive or offline copy of a DB seems like a win to me, just off the top of my head. But don't go quoting me or anything. :) Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Troy Werelius [mailto:troy_werel...@lucid8.com] Sent: Thursday, October 28, 2010 2:04 PM To: MS-Exchange Admin Issues Subject: RE: exporting ALL mailboxes to PST's Michael, would the "DAG I/O issue" you mention be a concern if you used a third party utility like Kroll PC or Lucid8's DigiScope (DS) to do the export? I would tend to think not if you ran DS from a member machine since it would extract the information over MAPI but thought I would check to ensure I am correct in my thinking since we have the ability to do exports of entire databases or large groups of mailboxes. Granted that we recommend that customer to do so from an offline version of the database in order to avoid any type of impact to production server and users but your comment about log shipping on DAGs made me wonder about the impact of doing a mass export against a live server even with a 3rd party product Thanks Troy C. Werelius Lucid8, LLC troy_werel...@lucid8.com<mailto:troy_werel...@lucid8.com> 425.456.8499 Monday-Friday 8AM to 6PM PST [http://www.lucid8.com/images/L8SIC3.jpg]<http://www.lucid8.com/> - This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this message, or the taking of any action based on it, is strictly prohibited. From: Michael B. Smith [mailto:mich...@smithcons.com] Sent: Thursday, October 28, 2010 10:48 AM To: MS-Exchange Admin Issues Subject: RE: exporting ALL maiboxes to PST's Are we talking sp1 or rtm here? Anyway, if you are using DAG, the recommendation is to do no more than 2 concurrent exports (otherwise the I/O gets in the way of log shipping). RTM shipped with a default of 5 and SP1 changes the default to 2 (and changes the command to new-mailboxexportrequest). I honestly have no idea whether this has made it into public documentation yet. Trust me. :) Regards, Michael B. Smith Consultant and Exchange MVP http://TheEssentialExchange.com From: Campbell, Rob [mailto:rob_campb...@centraltechnology.net] Sent: Thursday, October 28, 2010 1:44 PM To: MS-Exchange Admin Issues Subject: RE: exporting ALL maiboxes to PST's Actually you can do more than one at a time. Export-mailbox, like move-mailbox will multithread if you pipeline a collection of mailbox identities to the cmdlet. By default it will do up to 5 at a time. You can increase this number with the -maxthreads parameter. I believe up to a maximum of 10 get-mailbox | export-mailbox $_ -pstfolderpath c:\ $($_.name).txt -maxthreads 10 From: Jean-Paul natola [mailto:jnat...@hotmail.com] Sent: Thursday, October 28, 2010 12:36 PM To: MS-Exchange Admin Issues Subject: RE: exporting ALL maiboxes to PST's thanks for the example , where would i pcify the databse store name in this example, we have two DB's one named DBMAIN the other (that is the one that i leaving and i want to export) is called DBSEC Jean-Paul Natola ________________________________ Date: Thu, 28 Oct 2010 13:28:38 -0400 Subject: Re: exporting ALL maiboxes to PST's From: kenmli...@gmail.com<mailto:kenmli...@gmail.com> To: exchangelist@lyris.sunbelt-software.com<mailto:exchangelist@lyris.sunbelt-software.com> Something like this will export all "this has not been tested" get-mailbox | export-mailbox $_ -pstfolderpath c:\ $($_.name).txt On Thu, Oct 28, 2010 at 1:23 PM, KenM <kenmli...@gmail.com<mailto:kenmli...@gmail.com>> wrote: No you are able to script export-mailbox pretty easily using powershell On Thu, Oct 28, 2010 at 1:14 PM, Jean-Paul natola <jnat...@hotmail.com<mailto:jnat...@hotmail.com>> wrote: So if I understand this correctly, I have export each users box one at a time? ________________________________ Date: Thu, 28 Oct 2010 13:09:20 -0400 Subject: Re: exporting ALL maiboxes to PST's From: kenmli...@gmail.com<mailto:kenmli...@gmail.com> To: exchangelist@lyris.sunbelt-software.com<mailto:exchangelist@lyris.sunbelt-software.com> powershell and export-mailbox http://www.msexchange.org/articles_tutorials/exchange-server-2010/management-administration/exporting-importing-mailboxes-exchange-server-2010.html On Thu, Oct 28, 2010 at 1:04 PM, Jean-Paul natola <jnat...@hotmail.com<mailto:jnat...@hotmail.com>> wrote: Hi all, As I have mentioned one of oue divisions is leaving and I did have the foresight when I upgraded to ex2010 to put thme in their own ex database, now the company that is taking their email have asked to export all their mailboxes to PST's I didnt see exmerge anywhere on 2010 do I have to download it? or is it gone? I asked if I jusdt give them their DB but their hosting on ex2007 so that is why I think they want PST's TIA j --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist ************************************************************************************************** Note: The information contained in this message may be privileged and confidential and protected from disclosure. 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