Veritas Volume Replicator replicates HP VLS deduplicate data to DR

Updated: 14 Sep 2011 | 5 comments

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We are using Netbackup 7.0.1 and we also have HP VLS 12000 in our ifrastructure and VLS deduplicated all the data in our infrastructure. I just need to know Veritas Volume Replicator replicates the VLS deduplicated data from primary to DR site??

If Yes then any extra licenses we require for this.

Let me inform one thing VVR has not been setup yet.

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Storage and Clustering, Volume Replicator

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Sep

2011

0 Votes 0

Wally_Heim

Symantec Employee

Hi Sajid, I have to start

Hi Sajid,

I have to start with, I'm not familar with the HP VLS 12000 deduplication features. However, I don't think VVR is aware of the deduplication that is done on the HP VLS 12000. As such, I'm sure it will replication the entire volume (duplicated data and all) to the VVR secondaries. If you have another HP VLS 12000 at the VVR secondary site then the data will be deduplicated when it is written to the array on that side.

Maybe someone more familiar with the HP VLS 12000 will be able to comment on this configuration.

Thanks,

Wally

Sep

2011

0 Votes 0

sajid ahmed siddiqui

Dear Wally, Yes there is a HP

Dear Wally,

Yes there is a HP VLS 12000 at DR site as well. So as what i understand VVR will replicate all the thing which is reside in the particular volume which is either deduplicated data or any other data VVR just replicate this data to the DR site, first time VVR will replicate all the data in the volume and then it will replicate incrementally or differentially.

Am I rite??

Regards,

Sajid Ahmed Siddiqui

Sep

2011

0 Votes 0

mikebounds

Accredited

VVR replicates at block level

VVR replicates at block level so will replicate any filesystem with any type of data and even raw volumes.

You can do initial sync by tape, disk copy, or nework, after which VVR replicates continuously. VVR does not really replicate incrementally or differentially, it has just 3 modes:

Synchronous: Writes are not acknowledged until written at Primary and received by Secondary
Asynchronous: Writes are acknowledged when written at Primary (so may be written at Secondary some time later)
Synchronus override: Same as Synchronous, but if network fails, the replication automatically switches to Async, rather than failing write

Mike

UK Symantec Consultant in VCS, GCO, SF, VVR, VxAT on Solaris, AIX, HP-ux, Linux & Windows

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SOLUTION

Sep

2011

0 Votes 0

sajid ahmed siddiqui

Thanks Mike for

Thanks Mike for clearification.

Its mean VVR first sync full and then replicate only changed data to other site.

Moreover, is VVR sync vice versa?

Sajid

Sep

2011

0 Votes 0

mikebounds

Accredited

Yes VVR only replicates

Yes VVR only replicates changes, but if you change the same block twice it will send both changes.

Not sure what you mean by "is VVR sync vice versa". Only the primary can be written to and the secondary is read-only and is not even available to be read. The primary and secondary roles can easily be reversed, if you need to run from DR site and a resync from scratch is not neccesary in this instance.

Mike

UK Symantec Consultant in VCS, GCO, SF, VVR, VxAT on Solaris, AIX, HP-ux, Linux & Windows

If this post has helped you, please vote or mark as solution

Veritas Volume Replicator replicates HP VLS deduplicate data to DR

Comments

Hi Sajid, I have to start

Dear Wally, Yes there is a HP

VVR replicates at block level

Thanks Mike for

Yes VVR only replicates

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