If you perform an incremental backup of a drive with “Windows data deduplication” enabled, the following issues occur.
1) Incremental backup of the C drive and Windows data deduplication drive together, the Windows data deduplication drive becomes RAW.
2) Even if incremental backup of Windows data deduplication drive only is performed, the file may not exist in the backup image in some cases.
The $AIPMAP file containing the tracking information of the tracking driver will also be deduplicated.
As a result, the tracking information is written to an incorrect place, the file system will be corrupted.
Please do not perform incremental backup of the drive with Windows data deduplication enabled.
Full backup does not corrupt the file system of the Windows data deduplication drive.
* This problem was fixed in AIP2018SP1M1 or later.
In Windows Server 2012, there is a known bug and it becomes RAW.
Please refer to this article.
Deduplication drive in Windows Server 2012 becomes RAW
– ActiveImage Protector 2016R2SP1(22.214.171.12407) — 2018(126.96.36.19941)