I am working on a on premise Exchange 2010 to 2013 migration (mailboxes are migrated) with a large public folder database (176GB). The old server had a 5MB limit on PF attachment sizes, however, some older folders and some newer ones did not have a limit applied and has 15MB+ attachments.
After following the TechNet article to migration PF folders (have done this many times in the past without issues), the PF migration fails. I have included the output from Get-PublicFolderMigrationRequest | Get-PublicFolderMigrationRequestStatistics -IncludeReport | FL below. I have verified all connectors are set over 30MB, the attachment size limit on the old public folder has now been removed and set to unlimited (after the PF migration started).
I would like to know if there is a way to increase the attachment sizes on the PF migration. I have found there are limits when moving to O365, but can't seem to find too much information on premise.
All attachments need to be moved. I do not want to set the largeitemlimit and not migrate these attachments.
1/15/2015 5:13:00 PM [NH-CBGEX01] A large item was encountered: Item (IPM.Note)
Subject:"Re: Phoebe Berks - Delivery #2 - Scheme B cam 1", Size: 7.039 MB
(7,380,412 bytes), Folder:"06096 Phoebe Berks Cottages"
1/15/2015 5:13:10 PM [NH-CBGEX01] A large item was encountered: Item (IPM.Note)
Subject:"FW: Revised Switchgear Layout", Size: 14.17 MB (14,856,345 bytes),
Folder:"07100 CIA Utility Relocation"
1/15/2015 5:13:15 PM [NH-CBGEX01] A large item was encountered: Item (IPM.Note)
Subject:"RE: Revised Switchgear Layout", Size: 14.17 MB (14,857,325 bytes),
Folder:"07100 CIA Utility Relocation"
1/15/2015 5:13:15 PM [NH-CBGEX01] Stage: CopyingMessages. Percent complete: 43.
1/15/2015 5:13:15 PM [NH-CBGEX01] Copy progress: 156035/183221 messages, 44.95 GB
(48,263,255,527 bytes)/172.5 GB (185,234,779,443 bytes), 130/2389 folders completed.
1/15/2015 5:13:16 PM [NH-CBGEX01] Fatal error TooManyLargeItemsPermanentException
has occurred.
What can be done to increase the attachment limit on the on premise Exchange or force the migration to copy these large items? Again removing them or manually migrating them is not really an option.