Dell PowerVault DL2000 - Manual (Page 14)

ESG LAB VALIDATION
Dell PowerVault DL2000 Powered by CommVault
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Copyright  2008, The Enterprise Strategy Group, Inc. All Rights Reserved.
FIGURE 12. POWERVAULT DL2000 PERFORMANCE COMPARISON
What the Numbers Mean

The total amount of data that CommVault software would have sent to disk over the course of thirty days
without using file deduplication and synthetic full backups was calculated to be 613 GB.

CommVault Simpana file deduplication reduced the disk capacity from 613 GB to only 21 GB.

The amount of capacity reduction that can be achieved with the DL2000 and CommVault Simpana will
vary according to the backup policy in effect, the number of backups retained on disk, and the quantity of
file data being stored. In this scenario, capacity was reduced by 97%.

The DL2000 showed negligible impact when running file deduplication and compression enabled, with a
difference of less than 4%.
5 Source: ESG Research Report, Data Protection Market Trends, 2008
Why This Matters
ESG research indicates that cost is the leading obstacle to disk-based backup deployment.
5
Data
deduplication changes the economics of backup to disk by reducing the amount of data retained. ESG Lab
testing confirmed that CommVault Simpana file deduplication was able to reduce disk capacity for user file
backups by 85% after just one full and three incremental backups.
ESG Lab is confident that for a backup policy in which data is retained for 30 days with a 1% daily change
rate, the Dell PowerVault DL2000 Powered by CommVault can achieve data reduction rates of up to 97%
for file-based data.