Why was this changed? Is this a bug? Can we expect a patch to change it back?
sublemon
1 Mar 2011 9:04 PM
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For those who are moving mailboxes from your physical server to a server hosted on VMServer on the same box, you might be suffering from what I was. The move was so painfully slow that I was blaming it on the MRS. 45% in 2 days and 13 hours!
I eventually tried to copy the file manually and found I was getting 16KB/sec! I did some research and ran into this article on the VMware communities. Once I made the change, I was able to move my 2GB mailbox in about 30 minutes.
communities.vmware.com/.../267925
Which points to this article by Microsoft:
Rachel
28 Mar 2011 6:42 AM
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Why do microsoft change the value down to 2? Any technichal considerations?
Jay
20 Jun 2011 9:40 PM
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Hi Sublemon,
Did you install the hotfix to fix it? install the hostfix on the cas/hub and mailbox server(cas/hub and mailbox are on the seperate servers)?
Thank you and looking forward to your answer.
Joe
28 Jun 2011 5:55 PM
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I think this change is really badly thought through. Unless I am missing something any batch mailbox moves I do will use this setting now (2 mailboxes at a time - not 5) and to resolve it I need to stop the mailbox moves and then ON EACH CAS server in My organization I need to edit a config file and restart a service? Crazy..
Elango
23 Nov 2012 2:35 PM
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I have tried putting this as an article
www.itbigbang.com/how-to-configure-and-improve-move-request-performance-in-exchange-2010
JR
27 Dec 2014 4:06 AM
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Exchange 4, 5, 5.5, 2003 mailboxes/databases use single instance storage (SiS) to insert pointers (only store the body and attachments once) to files/emails/attachments within exchange 2k3 db Instead of having multiple copies of the same data object stored
within the db.
SiS is removed in ex2007, 2010, 2013.
2k3 mailboxes that are taking advantage of SiS have to expand during mailbox moves to 2007, 2010 databases.
http://blogs.technet.com/b/exchange/archive/2010/02/22/3409361.aspx