Poll: Observed vDP deduplication ratios

[dimka2000]

Hi,

would appreciate if people would share the vDP deduplication ratios from their enviornments.

I'm trying to come up with a solid average ratio I could use in our future production backup storage calculations.

Our vDP is in an evaluation mode, so it is small, per below. I'm hoping biger environments observe better ratios.

Number of backed up VMs: 6

Non-deduplicated size: 323.3GB

Deduplicated size: 67.6GB

Dedup ratio: 4.8/1

[jhunter1]

My lab environment:

8 VMs (adding more soon)

Non-dedup size: 621GB

Dedup size: 116GB

Ratio: 5.4:1

[Paul11]

VDP-1: (V6.0)

Number of backed up VMs:71 (Windows)

Non-deduplicated size: 6.3 TB

Deduplicated size: 1.3 TB

Dedup ratio: 4.8/1

VDP-2: (V6.0)

Number of backed up VMs:106 (windows)

Non-deduplicated size: 6.9 TB

Deduplicated size: 1.5 TB

Dedup ratio: 4.6/1

VDP-3: (V6.0)

Number of backed up VMs:62 (Windows)

Non-deduplicated size: 6.4 TB

Deduplicated size: 1.3 TB

Dedup ratio: 4.9/1

VDP-4: (V6.0)

Number of backed up VMs:72 (Linux)

Non-deduplicated size: 8.4 TB

Deduplicated size: 1.9 TB

Dedup ratio: 4.4/1

[smr222]

VDP version: 6.1.2.19

Number of backed up VMs: 25

Non-deduplicated size: 6,113.826 GiB

Deduplicated size: 3,128.997 GiB

Dedup ratio: 1.954/1

You might wonder why the compression ratio is so "low":
This certainly is not a very "average" environment. The major portion of storage is occupied by seismological time-series data already compressed by factors between 4:1 and 6:1.

I guess most of the compression happens with the "regular" Linux and Windows VMs in the backup set.

The lesson it should teach you: don't expect miracles if most of your data is already compressed.

For me a compression ration of almost 2:1 is pretty impressive already.

Stefan