data replication between SANs

Question

Hi everyone,

We have Clariion CX3-20 SAN on sites that are geographically dispersed.
In the new year we will be implementing DR and part of that will be data replication
between SANs. We will be doing a proof of concept to see what we can achieve.
I have to start somewhere so I thought I would ask if there is any good guides or documentation available?

Cheers

AllBlack · Answer

That's a lot of questions

I cannot answer all of those yet as we are going to investigate our options.
Our clariions are identical, we use ISCSI on each site.
There is 1Gb connectivity between sites and that will be upgraded to 10Gb soon.

Other than that we are looking for recommendations and best practices.
I think we want to get a better understanding about replication in general, we might do the concept in a development lab locally first. We want to start with basics

Hope this make sense

RRR · Answer

First of all you need to know specs of your SAN: are you getting dark fiber, which lenth, are you going to do production I/O over the those links or only Mirrorview ? Or are you getting an ip-connection between the 2 sites ? iSCSI Mirrorview or FC ?

Then, how much TB of storage is going to be replicated ? what's the change rate of the LUN on the production sites ? The more write I/Os, the higher bandwidth you'll need.

And.... please don't say SAN when you mean to say Storage please. SAN is the network where the storage array is attached to

AranH1 · Answer

With a 1Gb link between sites that will grow to a 10Gb link you are in great shape for replication. That is a WAN connection I assume? I would recommend either RecoverPoint with the CLARiiON splitter or MirrorView/A. Either one will work well in that environment. I am partial to RecoverPoint personnally, but that is just my opinion. It provides you with much more control over the replication and it is easy to manipulate and test the replicas at the remote site.

Either way you should be fine. We have two T3s to our remote site (90Mb combined) and are replicating 8TB with RecoverPoint and another 4TB daily of backups. I am envious of your 1Gb link

.

AllBlack · Answer

Yes it is WAN.I will start to look into both recoverpoint and mirrorview.We want to start using VMware's site recovery manager in the future too. Not sure if that limits the choice?

RRR · Answer

AllBack: did you get any further in this ? Can we help you in any way ? I know it's been quiet a bit in this thread, but I want to make sure you're ok with this.

CLARiiON

data replication between SANs

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