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NetBackup Accelerator - is this SYMC version of EMC DDBoost ?

Created: 12 Feb 2013 • Updated: 13 Feb 2013 | 8 comments
totolitoto's picture
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Hi All,

  • The Accelerator is used as deduplication process transfered to the client ... so something as Client Side Deduplication.
  • DDBoost from EMC, allows the Media Server to handle the deduplication process in order to reduce bandwidth between the Media Server and the Data Domain Appliance, in the condition the Media Server is not already overloaded (CPU and RAM).

So, is the Accelerator compatible with an OST DDBoost environment ?

Can it be used on a NAS ? I never thought there was any client installed on a filer when doing NDMP backup, nor in Direct to Tape, nor in Remote NDMP ... (no client, so no accelerator)

What do you say .

Thanks all

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Yasuhisa Ishikawa's picture

DDBoost is just deduplication plugin that works with EMC Data Domain, whereas NetBackup Accelerator is not equivalent to DDBoost. Accelerator uses not only deduplication technology of MSDP or OST  but also other various technology like change tracking and synthetic backup, to improve backup performance.

Can it be used on a NAS ?

i presume you are talking about backup source, so impossible. As you know, Accelerator requires NetBackup client on source. NDMP can not work with Accelerator.

BTW, about use for backup destination,  it is possible to use Accelerator with NAS that support OpenStorage(OST) and Optimized Sythetics with it. but not possible with standard NAS that does not support Optimized Synthetics.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

Marianne's picture

Please read through this blog:

as well as this reply rhat explains how Accelerator can be used to backup NAS volumes: 

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

totolitoto's picture

Thanks for your answers, (and the links, Marianne).

So as far as I understand, Accelerator arrived with version 7.5.

With Client Side Deduplication, it can only work within a NetBackup Deduplication environment (as Client Side dedupe works only with MSDO and PureDisk).

Without Client Side Deduplication, it would work with any OST appliance that support Optimized Synthetics (that would be a pair of appliance with deduplication) ?

Marianne's picture

Keep an eye on the HCL that is updated about once a week (best to subscribe to the doc).

New OST features are updated constantly. See section called 'OST Secondary Storage Solutions'. Look for Accelerator. 

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

Yasuhisa Ishikawa's picture

If I understand right,  in Accelerator backup, dedplication performs on or behind Media Servers to reduce client load.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

totolitoto's picture

In facts, instead of synthetizing a Full Backup from 1 Base Full + x Incrementals, each Accelerated Full job sends only the delta blocs/files from the client to the dedupe appliance.

  • Without clientside dedupe, only delta files will be sent to the media server (and dedupe takes place there)
  • With clientside dedupe, only delta blocs will be sent to the media server (double benefit of deduplication process)
Yasuhisa Ishikawa's picture

I was convinced that support of Optimized Synthetics feature is enoght for Accelerator because it is mentioned in NetBackup 7.5 Release Notes.

But, as stated in HCL, only OST storages marked 'Accelerator' are supported. Thank you for ypur help, Marianne.

Authorized Symantec Consultant(ASC) Data Protection in Tokyo, Japan

teiva-boy's picture

You can use the Accelerator with DataDomain and BOOST per the HCL...However, the right software is not quite yet released.  You need NBU7.5, and from EMC you need the OST plug-in 2.6 and I bet DDOS 5.3 both of those are certified in the Symantec HCL, but not actually released from EMC.

The Accelerator IMO is Symantec's answer to what EMC was doing with Avamar and NDMP for years now. While I think it took them long enough, it's also great for Symc to finally have a competing product for large file backups and NAS backups like what Avamar can do.

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