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global vcs

linuly
Level 4

hi,

in global vcs with 2 or 3 sites what is the best way to use in data replication storage-to-storage(from a site to other site) or vvr?

tnx 

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Mouse
Moderator
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depending who is going to look after it

many storages don't support complex replication topologies which could be the limiting factor, however something like SRDF will do just fine. However storage replication offloads the replication task from servers and can have a consistency group across LUNs exported to multiple servers, something what VVR can't do.

VVR on another hand offers more granular control on what you replicate and how, supports multiple topologies but at expense of additional resources required on servers and storage for SRLs, need housekeeping - monitoring, etc and also reporting of VVR leaves better to be desired so keep it in mind

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Mouse
Moderator
Moderator
Partner    VIP    Accredited Certified

depending who is going to look after it

many storages don't support complex replication topologies which could be the limiting factor, however something like SRDF will do just fine. However storage replication offloads the replication task from servers and can have a consistency group across LUNs exported to multiple servers, something what VVR can't do.

VVR on another hand offers more granular control on what you replicate and how, supports multiple topologies but at expense of additional resources required on servers and storage for SRLs, need housekeeping - monitoring, etc and also reporting of VVR leaves better to be desired so keep it in mind

only a thing.

you written that vvr suport multiple technologies and offer more granular control.

can you elaborate?

tnx

CliffordB
Level 4
Employee

Hi.

 

Veritas Volume Replication (VVR) runs on the host and depends on the use of our volume manager, VxVM.   Since it is host based, and is supported everywhere VxVM is supported (5500 different arrays, direct attched disk, NVMe, etc) one can replicate from vendor A storage to vendor V storage.

 

On the second point, as VVR is host-based, one can select the specific volumes that one needs to replicate.  Array-based replication normally covers hundreds of LUNs, so for a particular host, one must replicate all volumes .

Another advantage is that the systems administrator has total control, not needing to talk to storage team to set up replication.

Hope that helps.

 

Cheers


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frankgfan
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The answer to your question "what is the best way to use in data replication" is VVR. (see release notes for the details of VVR/VCS on http://sort.veritas.com/documents)