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标题
Item count discrepancy between source and target mailbox for Recoverable Items sub-folders. And/or between what ODM reports for source mailbox compared to MS Exchange -
说明
When migrating the Recoverable Items folder structure, you may notice a discrepancy in the number of items in source mailbox folders vs. the target mailbox folders after migration.
Or you may notice a a discrepancy in the number of items reported by the ODM tool in the source tenant /DiscoveryHolds folder compared to the source item count that MS Exchange shows.
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原因
On Demand Migration (ODM) and On Demand Migration for Email (ODME) only estimate and migrate the following item types when migrating items from the Recoverable Items folder:
"IPM.Note", "IPM.Document", "REPORT", "IPM.Schedule.Meeting", "IPM.Post", "IPM.Recall", "IPM.Sharing", "IPM.IxOS-Archive", "IPM.Appointment", "IPM.Task", "IPM.StickyNote", "IPM.Contact", "IPM.DistList"
ODM also exclude the following items:- Folder Class is "IPF.Configuration"
- Folder is Hidden
- "Conversation History/Team Chat" folder
- "Recoverable Items\Substrate Hold" folder
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解决办法
This is working as designed, we have logged an Enhancement request ODMEM-I-91 to include a log entry to help users understand what was/was not excluded from items to be migrated, with item counts of each item type, this will be evaluated by our product team for possible inclusion in a future release of the product.
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其他信息
Those "IPM.x" categories such as "IPM.Appointment" that do get counted and migrated are in the 'Calendar Logging' folder. So those to folders ought to have the same number of items on the source and target tenants. And reported by MS Exchange on the Source versus ODM on the Source.] The other folders such as 'Deletions' and 'Purges' are where we would expect the number of items not to match because those types of item don't get migrated to the target. And are not counted by ODM so MS Exchange and EWS on the source will report a higher number.