Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication

Last post 09-01-2015, 10:31 AM by ZCameron. 10 replies.
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  • Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-21-2015, 3:59 PM

    We have several customers who have offsite storage with a small circuit connecting back to the primary site.  I would like to be able to run an AUX copy from the Primary site to the storage at the secondary site but the pipe is too small to push all the data through.  I can setup a media agent at the remote site and seed the data but that means the media agent at the remote site has to always be there.  Since my source (primary) media agent already has connectivity to the offsite storage I really wish there was a way to seed the data without needing or only temporarily needing a media agent at the remote site.  Is it possible to do this without keeping the remote site media agent?

     

    This is not an ideal situation as there is nothing to restore the secondary site if the primary were to go down but I want to know for future scenarios say the customer wants the primary copy to be the remote site but has no servers there capable of being a media agent.

     

    Thanks for any input!

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 10:21 AM

    Have you thought about using a small NAS device to seed the data? You could size it based on the largest site that you have and then use it to send the data to each site. As you got one site done, you could have the NAS shipped back to you to use for the next site. Just a thought.


    Kenneth E. Davis

    Certified CommVault Administrator
    Certified CommVault DR Specialist
  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 10:32 AM

    We currently use a large external drive.  I am trying to eliminate the need for a media agent at the remote site(s).  Anytime you seed a remote site you have to have a media agent at that site.  Using the primary media agent would just pull all the data back across the link. 

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 10:40 AM

    That is true, but in the case I used that, I used one of the existing servers at the site as a media agent for that one purpose. Of course, you would have to coordinate that use with the owner of the server, and I wouldnt do it during the day or whatever peak business is for that server. Also, in regards to the sizing of the server, I used several that were not up to the CommVault specs, but they worked. Slow, but it worked faster that going over the pipe. When the server was not in use as a media agent, the services were disabled.


    Kenneth E. Davis

    Certified CommVault Administrator
    Certified CommVault DR Specialist
  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 10:51 AM

    Thanks,  We run AUX copies to the remote site everynight so I am stuck with keeping a media agent server there at all times.  I am going to go with it can't be done.  Only if I could merge the DDB from the remote site with the primary I would be so happy.

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 2:36 PM

    Have you asked your CommVault engineer (assigned to your account) about this? Seems I recall someone saying a merge could be done, but I could be wrong on that one. we were not deduping our remote sites, so this was not an issue for us.


    Kenneth E. Davis

    Certified CommVault Administrator
    Certified CommVault DR Specialist
  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-24-2015, 8:09 PM

    If you have a MA in remote site and MA in primary site both using dedupe, you could do DASH copies across the wire with only signature and change blocks needing to be transferred.

     

    This should significantly reduce the copy time across the small pipe.

     

    There is no way to merge DDB's, it's only the CS DB that can be merged if needed.

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-25-2015, 9:13 AM

    That is currently what I am doing.  My goal was to seed data at the remote site without needing to leave a media agent there.

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 08-31-2015, 8:03 PM

    Could you not just backup the data across the WAN to your central MA using client side deduplication without using a local MediaAgent at all? We backup customers all over the country via sometimes very poor internet links without issue using a Global DDB at the central site to cut down on traffic.

    It works out almost the same as having a permanent MA onsite performing DashCopies back but will cost you on recovery time if you needed to recover in place at remote site. If you recover at central office then ship out replacement gear then that would be fine to backup direct.

    Other options:

    Use a small desktop PC with a 3TB drive in it to send to site, you can fit it in a pelican case for easy shipping. 

    Use a USB drive for the seeding process and copy the DDB across to it before shipping back to your office, this is much slower and fiddly process though. This would only be needed for initial seeding once seeded you only need DashCopies to move updates.

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 09-01-2015, 10:15 AM

    Yes, we do that for many other customers.  My goal here was to see if I could seed data at a remote storage location without a media agent at the remote site.  Then once seeded run dash copies from the primary site to the remote storage since they are on the same network.  Again the whole goal is to not have a media agent at the remote site.  It seems the only way to do this would be to move the remote storage to the primary site seed the data then ship the remote storage back and run dash copies.  Obviously, not ideal.

  • Re: Aux Copy to Remote Site Storage without Remote Site Media Agent w/ Deduplication
    Posted: 09-01-2015, 10:31 AM
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