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Data Domain: About Veeam UI capacity reporting when DDFS quota is enabled

Summary: Veeam UI reports the smaller value (between hard-limit quota and calculation) as ddboost storage-unit capacity.

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Article Content


How does Veeam UI report capacity for ddboost storage-unit when DDFS quota is enabled and hard-limit quota is configured to ddboost storage-unit?

Background: When configuring Backup Repository in the Veeam UI for ddboost storage-unit and clicking on the Populate button, Veeam queries and reports ddboost storage-unit capacity.
Veeam UI Veeam UI pt 2

The reported capacity is
1 the hard-limit quota if hard-limit quota < the calculation ("LSU-pre-comp-size" + "DD-physical-available" x "overall-dedup-ratio")
2 the calculation if hard-limit quota > the calculation ("LSU-pre-comp-size" + "DD-physical-available" x "overall-dedup-ratio")

Hard-limit quota:
LSU 1 40TiB,
LSU 2 300TiB
Pre-comp size:
LSU 1 24.02TiB,
LSU 2 146.7TiB

DD physical available 4.41TiB and overall deduplication ratio 5.3x

LSU 1 24.02 + 4.41 * 5.3 = 47.393TiB,
LSU 2 146.7 + 4.41 * 5.3 = 170.073TiB

Result (Veeam GUI capacity report)
LSU 1 40TiB (calc 47.393TIB)

Capacity part 1

LSU 2 170.073TiB (quota 300TiB)

Capacity Part 2

Article Properties

Affected Product

Data Domain Boost


Data Domain

Last Published Date

13 Sep 2023



Article Type

How To