Topic
  • 6 replies
  • Latest Post - ‏2013-07-17T12:27:25Z by Kirson
AllenChang
AllenChang
12 Posts

Pinned topic V7000 mirrored volume and widnows cluster

‏2013-07-16T10:36:40Z |

My customer want and SQL Server cluster enveroment,

they want put the server in two site,

and they want the storage has high availability too!

So I planed use the v7000 in two site,

and the data volume and cluster quorum volume use the v7000 mirrored volume technology!

The customer want that if one site fail both storage and server,

the service is still alive!

Is any body can tell me it my idea can meet customer's demand ?

Thanks a lot!

 

Attachments

Updated on 2013-07-16T10:38:05Z at 2013-07-16T10:38:05Z by AllenChang
  • AndersLorensen
    AndersLorensen
    156 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-16T13:48:19Z  

    You cannot have Automatic failover with this setup.

    If you want zero downtime in case of a SAN failure, you need to look into an N-Series Metrocluster, or a SVC Stretched cluster.

     

    I'd suggest a solution with a Storwize V7000 on each location, with a 2-node SVC Stretched cluster in front of it. And some random storage (v3700 for exapmple) at a third location as a Quorom site.

    Read the redbook on it. This one is a good place to start:

    http://www.redbooks.ibm.com/redbooks/pdfs/sg248072.pdf

    Its not easy to design and setup, so ask for help from a distibutor or business partner  that have tried it, if you have no experience in it.

     

    SVC is pretty cheap for the hardware, the expensive part is the license. The licens is per TiB. So it can be made pretty cheaply if you want high uptime for a small number of GB.

     

    --

    Anders

  • AllenChang
    AllenChang
    12 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-16T23:16:39Z  

    You cannot have Automatic failover with this setup.

    If you want zero downtime in case of a SAN failure, you need to look into an N-Series Metrocluster, or a SVC Stretched cluster.

     

    I'd suggest a solution with a Storwize V7000 on each location, with a 2-node SVC Stretched cluster in front of it. And some random storage (v3700 for exapmple) at a third location as a Quorom site.

    Read the redbook on it. This one is a good place to start:

    http://www.redbooks.ibm.com/redbooks/pdfs/sg248072.pdf

    Its not easy to design and setup, so ask for help from a distibutor or business partner  that have tried it, if you have no experience in it.

     

    SVC is pretty cheap for the hardware, the expensive part is the license. The licens is per TiB. So it can be made pretty cheaply if you want high uptime for a small number of GB.

     

    --

    Anders

    Hi Anders:

    Thanks for your asnwers,

    but I have some question

    Does V7000 not the same function as SVC?

    I konw they use the sam firmware,but I don't find the stretched cluster function in v7000's redbook!

     

    In the other word,can't v7000 create the cluster enveroment accross the IP network or internet by ip router?

    So in the case,I can only choose SVC or N seies' metro-cluster?

  • AndersLorensen
    AndersLorensen
    156 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-17T06:55:42Z  

    Hi Anders:

    Thanks for your asnwers,

    but I have some question

    Does V7000 not the same function as SVC?

    I konw they use the sam firmware,but I don't find the stretched cluster function in v7000's redbook!

     

    In the other word,can't v7000 create the cluster enveroment accross the IP network or internet by ip router?

    So in the case,I can only choose SVC or N seies' metro-cluster?

    In the storwize, you have a 2U chasis that comes with 2 controllers.

    With the SVC you get 2 1U rack servers as controllers.

    The difference is that you can put on 1 controller on each location with the SVC. You cannot do that with the storwize because the controllers are in the same chasis.

     

    The Storwize software can do stretch cluster - its the hardware that cant.

     

    --

    Anders

  • AllenChang
    AllenChang
    12 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-17T07:16:02Z  

    In the storwize, you have a 2U chasis that comes with 2 controllers.

    With the SVC you get 2 1U rack servers as controllers.

    The difference is that you can put on 1 controller on each location with the SVC. You cannot do that with the storwize because the controllers are in the same chasis.

     

    The Storwize software can do stretch cluster - its the hardware that cant.

     

    --

    Anders

    Hi Anders

    In my plan,

    I will use four node cluster,

    two node (one storage system with two node canister)in one site,and two node in another site!

    and than this four node create one cluster!

    If can do this,I will use mirrored volume techonloy,the cluster will write the mirrored volume into two storage system in two site!

    Can I do this?

  • chriscanto
    chriscanto
    292 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-17T08:26:01Z  

    Hi Anders

    In my plan,

    I will use four node cluster,

    two node (one storage system with two node canister)in one site,and two node in another site!

    and than this four node create one cluster!

    If can do this,I will use mirrored volume techonloy,the cluster will write the mirrored volume into two storage system in two site!

    Can I do this?

    Hello Allen, I'd recommend reading through the Information Center and Redbook for V7000 as it sounds like you've misunderstood what volume mirroring is/does.

  • Kirson
    Kirson
    4 Posts

    Re: V7000 mirrored volume and widnows cluster

    ‏2013-07-17T12:27:25Z  

    BTW - its in the road map to support V7000 stretch cluster.

    not sure about dates...