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Media Server Dedupe Rate

Created: 25 Mar 2013 • Updated: 02 Apr 2013 | 6 comments
Twinkle Sapra's picture
This issue has been solved. See solution.

Hi Folks

I have a implement a solution based upon below scenario.

Remote Location :- 5 clients with 200 GB each ( Total of 1 TB). Data type is mostly text files.

Want to deploy one media server (7.1.0.2) with MSDP at Remote location and using SLP data will replicate to central Master Server/Media (7.1.0.2)  Server with MSDP. No issue with Network bandwidth between Remote media server and Central Master Server.

Is there any case study to calculate de-dupe rate based upon below requirement

Dedupe rate from client side deduplication to Remote media server MSDP?

Optimize Dedupe rate from Remote MSDP to Central Master/Media Server MSDP ?

Thanks in Advance !!!

 

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Mark_Solutions's picture

Always difficult to say for this type of enquiry and compression set on the client and / or media server can make a difference too

The first run of 200GB you would hope to give about 20% de-dupe rates as long as it is not encrypted data or the like

After that first run you could be getting into the 90% range for de-dupe.

You could use client side de-dupe straight back to the remote site and if have backed up plenty of clients already in the data centre then the de-dupe rate could be quite good - Accellerator really comes into play here too!

If you have a remote MSDP Server then again it is all down to how much has already been backed up on the main site as to the ratio you will get - but they are all pretty much the same ratios as they just query the current fingerprint databases

As an example, a remote client i did took a hefty 26 hours for its first backup, but using accelerator the next full backup took 37 minutes

So sometime you either need to seed the data (put the MSDP local to the client for the first backup) or just accept the hit for that very first backup and then enjoy the subsequent ones!

A ball park is to expect in the 20% range for the first backup then 60 to 90% after that - but all depends on the data types and how much you have already backed up to the MSDP pool to give the maximum set of fingerprints

Hope this helps

Authorised Symantec Consultant

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Nicolai's picture

 As Mark mentioned it difficult to say. But I usually use a rule of thumb of 20X reduction rate. It's a  conservative estimate, but better hitting with a cannon than not hitting at all.......

Assumption is the mother of all mess ups.

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teiva-boy's picture

I'd hardly call "20x," conservative.  That's a greater than 95% dedupe rate, and IMO a best case scenario.  

You want to quote conservative, quote 10x or about 90%.  

There is an online portal, save yourself the long hold times. Create ticket online, then call in with ticket # in hand :-) http://mysupport.symantec.com "We backup data to restore, we don't backup data just to back it up."

Nicolai's picture

Never the less it's what I use, and until now it's has been working for me smiley

But lets meet halfways and say 15X wink

Assumption is the mother of all mess ups.

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

Mark_Solutions's picture

Is your question answered? If so dont forget to close off the thread using the Mark as solution option

Thanks

Authorised Symantec Consultant

Don't forget to "Mark as Solution" if someones advice has solved your issue - and please bring back the Thumbs Up!!.