Recently there are some request from my client who suggested to have their production and DR site to be automated protected and fail over in the event of disaster. VMware SRM seems to be right choice for most of the time, but these clients are decided to bring it to another level of fail over procedure during the DR happen. I am doing some research today and found this interesting topic from Netapp which the Metro cluster suppose to synchronize from production to DR through dark fiber to prevent controller failure, DR or disk corruption.

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