This is using MS Exchange Server 2010 with SP1. There are 2 CAS, and 3 Hub Transports + Mailbox servers. The objective is we wanted to backing up 30+ mailboxes into PST files, and then remove those mailboxes. We are using MS Exchange Mailbox export request utility. We also granted the "exchange trusted subsystem" the read/write permissions on the nas storage.
At first , we granted few of our accounts "mailbox Import Exports" role. After that, for each mailbox that we want to export as PST, we type:
- new-mailboxexportrequest -mailbox mailboxxxx -filepath "\\nas1\exchange mailbox archives\mailboxxxx.pst"
Type "get-mailboxexportrequest" to make sure that the above request is in queue.
Type "get-mailboxexportrequeststatistic -identity "mailboxxxx\mailboxexportx", to see the progress in percentage
After, proceed with the second and subsequent mailbox export.
we type in get about 10+ mailboxes in queue. However, the progress seems very slow, with only 2 GB of the mailbox contents completed in 12 hours. After waiting for about 4 days, I typed "get-mailboxexportrequest" again, and to my surprise, found about 6 mailboxes were completed but failed.
Why these mailboxes failed to export, and some more they were exported in the slow pace? Anywhere to increase the speed?