Veeam Certified Engineer (VMCE) Practice Exam

Which guest OS file system is required for excluding deleted blocks?

FAT32 exFAT Microsoft NTFS ext4

Correct Answer:

Microsoft NTFS

Explanation:

Excluding deleted blocks in this context relies on a change-tracking mechanism built into the guest OS file system. Windows NTFS provides the USN Journal, a change journal that records file and block-level modifications, including deletions. Veeam uses that journal to identify which blocks were deleted since the last backup so those blocks can be omitted from the next incremental pass, making backups smaller and faster. FAT32 and exFAT do not implement this kind of change journal, so they cannot support this optimization. ext4 is a Linux file system with its own journaling, but the specific ability to exclude deleted blocks in this Windows-oriented change-tracking workflow is tied to NTFS and its USN Journal. Thus NTFS is the required file system.

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