I've seen them for high availability configurations, however the distance is too short for some disaster recovery needs. In my shop, we don't use synchronous replication. The link distance we require (600KM) is too far for it, and reducing the distance enough that we could do synchronous mirroring would subject us to the risk of both datacenters failing to the same regional disaster.

On Tue, Nov 25, 2014 at 5:50 AM, Strauss Wolfram <Wolfram.Strauss@emmi.com> wrote:

NetApp MetroCluster, and the SyncMirror component in particular, is a construct mainly demanded by companies in the DACH region, as I was told by NetApp. We are a Swiss company and our management often demands synchronous data replication between two datacenters on the storage level, hence we have quite a couple of MetroClusters running. How many of you outside the DACH region are using MetroClusters?

 

And for those who don’t, how do you deal with synchronous replication of data? Do you solve the problem on higher layers (OS, application, etc.) or are your requirements simply less strict, so that e.g. snapmirror asnyc is sufficient?

 

 

Wolfram


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