DLO de duplication

[abhi1983]

If we enable de dup for user backup , and we are backing up 1 GB of data  how much data will be occupied in the de dup storage location .

The results have been varied till now

Our results

1.       Backup_test1

Data Backed up from Laptop = 2.97 GB; Dedupe = 51 MB; Storage Pool = 535 KB

2.       Backup_test2

Data Backed up from Laptop = 2.97 GB; Dedupe = 555 KB; Storage Pool = 535 KB

3.       Backup_test3

Data Backed up from Laptop = 2.97 GB; Dedupe = 555 KB; Storage Pool = 535 KB

4.       Backup_test4

Data Backed up from Laptop = 2.97 GB; Dedupe =  1GB; Storage Pool = 535 KB

1.       Backup_test1

Data Backed up from Laptop = 2.97 GB; Dedupe = 51 MB; Storage Pool = 535 KB

2.       Backup_test2

Data Backed up from Laptop = 2.97 GB; Dedupe =  900 MB ; Storage Pool = 535 KB

3.       Backup_test3

Data Backed up from Laptop = 2.97 GB; Dedupe = 555 KB; Storage Pool = 535 KB

4.       Backup_test4

Data Backed up from Laptop = 2.97 GB; Dedupe = 555 KB; Storage Pool = 535 KB

WHy is there this differnce in space occupied by de dup storage location . How can we estimate the storage space to give

[CraigV · Accepted solution]

Hi,

As the dedupe process runs, your dedupe results will get better. So it explains how it deduped 3GB down to 51MB.

However, the dedupe folder and rates can grow with any subsequent backup depending on how the data being backed up grows, or whether or not you're adding in extra files and information.

There is a dedupe assessment for Backup Exec, but you need to be a partner to access this...best bet, seeing as how you are one, is to log onto Symantec's PartnerNet site and download the tool from there.

It's targeted at BE, but might actually still be valid for your environment.

Thanks!

[abhi1983]

Ok ... In that case how will we delete the de dup  data or backup the de duped data to tape drives or some other location if the data is hash values ... if want users to free up there network drive when it gets full how will it be possible with De duped .