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Verifying client side deduplication

Created: 02 Dec 2013 • Updated: 05 Dec 2013 | 9 comments
This issue has been solved. See solution.

We have 10 clients in a policy using the same storage unit (appliance diskpool). For policy " Disable client side dedup" is un-checked. And for testing purpose, I have added a client in Master server property specify "prefer to use client side dedup". Looks like client side dedup is not happening.

Did I miss anything here ?

How to ensure client side dedup is working or not.

 

 

Operating Systems:

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Nicolai's picture

Monitor the NIC during backup - if client side dedupe is active no increased NIC load should be seen.

Assumption is the mother of all mess ups.

If this post answered your'e qustion -  Please mark as a soloution.

sri vani's picture

Please verify the Datailed Backup Job Status
If client deduplication is enabed, message wld be somethings like

 (pid=xxx) Using OpenStorage client direct to backup from client nbuclient to nbumedia..

https://www-secure.symantec.com/connect/forums/how...

 

ashokk's picture

Yes I can see the below entry. Is this only way to identify ?

(pid=xxx) Using OpenStorage client direct to backup from client nbuclient to nbumedia..

What I basically want to know is how much data was transferred over wire.

 

Marianne's picture

Wait for job to finish.

You will see amount of actual data that was transferred and dedupe rate in Job Details.

Supporting Storage Foundation and VCS on Unix and Windows as well as NetBackup on Unix and Windows
Handy NBU Links

ashokk's picture

Hi Marianne,

We use deduplication at media server and also client side dedup. For both backups , I can see "Scanned, Sent , CR sent" entries in Detailed status. But I couldn't distinguish exactly whether it is client side dedup or media server dedup (We use MSDP pools)

 

sri vani's picture

Hi Ashok,

 

For Client deduplication jobs it shows two duplication rates.

1st duplication rate for the client data and the 2nd data for disk image header and TIR(if applicable)

also u will see in the begining lines Using OpenStorage client direct  xxxxxxx

For more details:

Please verify the below link

http://www.symantec.com/business/support/index?pag...

check page number 85 and 86

ashokk's picture

I see below lines in Detaied status. How do I interpret this.

12/04/2013 20:59:17 - Info MediaServer (pid=7573) Using OpenStorage client direct to backup from client ClientServer to MediaServer

12/04/2013 21:00:23 - Info MediaServer (pid=7573) StorageServer=PureDisk:MediaServer; Report=PDDO Stats for (MediaServer): scanned: 105312 KB, CR sent: 3192 KB, CR sent over FC: 0 KB, dedup: 97.0%

12/04/2013 21:00:23 - Info MediaServer (pid=7573) Using the media server to write NBU data for backup ClientServer_<backupid> to MediaServer

12/04/2013 21:00:24 - Info bptm (pid=7573) EXITING with status 0 <----------

12/04/2013 21:00:24 - Info MediaServer (pid=7573) StorageServer=PureDisk:MediaServer; Report=PDDO Stats for (MediaServer): scanned: 1 KB, CR sent: 0 KB, CR sent over FC: 0 KB, dedup: 100.0%

12/04/2013 21:00:24 - Info bpbrm (pid=7455) validating image for client ClientServer

12/04/2013 21:00:24 - Info bpbkar (pid=412) done. status: 0: the requested operation was successfully completed

12/04/2013 21:01:25 - end writing; write time: 0:01:06

the requested operation was successfully completed  (0)

 

 

sri vani's picture

 It is a Client deduplication job :

Please verify below:

You have two duplication rates and the job begins with Using OpenStorage client

 

12/04/2013 20:59:17 - Info MediaServer (pid=7573) Using OpenStorage client direct to backup from client ClientServer to MediaServer

12/04/2013 21:00:23 - Info MediaServer (pid=7573) StorageServer=PureDisk:MediaServer; Report=PDDO Stats for (MediaServer): scanned: 105312 KB, CR sent: 3192 KB, CR sent over FC: 0 KB, dedup: 97.0%

12/04/2013 21:00:23 - Info MediaServer (pid=7573) Using the media server to write NBU data for backup ClientServer_<backupid> to MediaServer

12/04/2013 21:00:24 - Info bptm (pid=7573) EXITING with status 0 <----------

12/04/2013 21:00:24 - Info MediaServer (pid=7573) StorageServer=PureDisk:MediaServer; Report=PDDO Stats for (MediaServer): scanned: 1 KB, CR sent: 0 KB, CR sent over FC: 0 KB, dedup: 100.0%

12/04/2013 21:00:24 - Info bpbrm (pid=7455) validating image for client ClientServer

12/04/2013 21:00:24 - Info bpbkar (pid=412) done. status: 0: the requested operation was successfully completed

12/04/2013 21:01:25 - end writing; write time: 0:01:06

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