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Dedupe Smarter, Backup Faster! NetBackup Intelligent Deduplication and NetBackup Accelerator

Created: 02 Apr 2012 • Updated: 05 Apr 2012 | 5 comments
Swathi Turlapaty's picture
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Location: 
Webcast
Time: 
Tue, 03 April, 2012 - 10:00 - 11:00 PDT

NetBackup has deduplication built-in.  Turn your cheap disk storage into a powerful deduplication pool in a matter of minutes.  The unique intelligent deduplication engine features end-to-end deduplication providing you the flexibility to dedupe at source and target with the click of a mouse.  NetBackup Accelerator breaks the backup window by delivering up to 100 times faster backups.  Whether you are protecting systems in data center or remote offices, NetBackup’s smarter way to dedupe while delivering faster backups is part of Symantec’s dedication to deliver better backup for all.

Are you concerned about backups taking too long? Is your backup storage requirement exceeding your budget? Are you nearing the risk of not being able to meet backup SLAs? Join us to learn more about how NetBackup can help.

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Tanmoy's picture

 

Webcast was good and helpful …thanks… need to confirm the following stuffs...

Whether the Natbackup client dedupe check with storage side metadata. If the storage pool already have that segment or not….or  rather it will check with its own metadata only or it checks both , as same block or segment may come from  different client systems also... Secondly whether this  dedupe metadata gets replicated between client and media servers or not...

 

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AbdulRasheed's picture

 

Hi Tanmoy,

  Thank you. Appreciate the feedback!

   In NetBackup client side deduplication caching, the fingerprints of the segments are compared with the cache first. It there is a match, storage is not contacted. If there is no match, the storage is contacted to see if storage has the fingerprint. If yes,  the segment is not sent. Thus, the client never sent the actual segment data unless its fingerprint is not present in the storage. It is providing true deduplication across all clients.

   NetBackup 7.5 (and also NetBackup 7.1.0.4) goes a step further! We have implemented client seeding. Using this technique, even when you backup a brand new client (which has no cache),  it is seeded with fingerprint cache from the server, so for a brand new client, the right seeding can significantly reduce the need to talk to the storage for fingerprints as it builds up the local fingerprint cache. Imagine how powerful this is when you are introducing a new client in a remote office that is being protected via WAN! 

  More details are available in NetBackup Deduplication documentation.

 

Warm regards,

Abdul "Rasheed" Rasheed

Tweet me @AbdulRasheed127

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rizwan84tx's picture

Does NBU client Deduplication cache is updated to storage server? 

The reason i ask is, we are running on NBU 7.1.0.3 version and if i had to reinstall NBU client software (dedupe is cache is deleted too) in the remote client and when i run backup (Client side Dedupe) and storage server has no finger-print info about the segments, then im afraid that it's going to backup alot of data.

If the client updates the its dedupe cache to storage server, then reinstalltion of NBU client is not going  to affect me at all.

Best Regards,

Rizwan

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AbdulRasheed's picture

Hi Rizwan,

  Sorry, I had been travelling. 

  The cache is stored locally. If you happen to reinstall the client, it is true that you do lose the performance advantage you get from the cache for the first backup. But it will not result in backing up 'a lot of data'. What happens there is that the client has communicate back and forth with storage server to see if the segments it finds (while reading the file system) are already in storage or not. However, the amount of data send to storage will be just the unique data (data not present in storage already). 

   With NetBackup 7.5 we have also provided seeding capabilities. Now you have the ability to say whether you want the client to preload fingerprints belonging to a client (it can be the reinstalled client or an entirely different client system) if you think the 'new client' has a lot of data in common with exisiting clients. 

 

   

Warm regards,

Abdul "Rasheed" Rasheed

Tweet me @AbdulRasheed127

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AbdulRasheed's picture

 

As I promised during the webcast, I am also sharing questions and answers I got from those who were not on Twitter. I am only using the first name to ensure privacy.

 

Minh asked: are there advantage to using the client/source instead of media server?

Rasheed: Client side deduplication the following advantages. Since the data reduction occurs at the source, you are not shipping all the data segments through your backup over network. This brings down the burden on your network from backups. Secondly, client side deduplication reduces the overall backup window as you don’t spend time streaming every segment. Further, when used in conjunction with NetBackup Accelerator which is included with NetBackup Intelligent Deduplication; you are significantly eliminating the resource overhead (CPU, I/O and network) from backups on production clients. Lastly, client side dedupe eliminates the potential of media servers in the data path as the bottleneck in backup performance.

 

Mike asked: Is the fiber channel configuration available in the "build your own" configuration?

Rasheed: Not sure whether you are asking fibre channel connectivity for backups (client to media server) or replication (media server to another media server). If it is the former, it is available in build your own configurations. Please see the NetBackup SAN Client guide for more details. Fibre channel based transmission is not supported for replication at this time.

 

 

Jeff asked: Does the VM backup require a full VMDK restore to do single file restores?

Rasheed: No! Because of V-Ray, NetBackup can restore individual files directly from the backup without any intermediate staging. For the nuts an bolts of this process, I would recommend reading my blog here: https://www-secure.symantec.com/connect/blogs/nuts-and-bolts-netbackup-vmware-understanding-v-ray-vision-through-backup-process-flow

 

 

Warm regards,

Abdul "Rasheed" Rasheed

Tweet me @AbdulRasheed127

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