Our organization has about 130 SQL instances. Most are VMs (on Hyper-V). The more mission-critical VM SQL instances are failover-clustered.
The VM hosts themselves also consist of failover-clusters. So we have:
SQL on a cluster, which is built out of two nodes (each on a different VM host), Each host is running on a two-node hardware cluster. Belt-and-suspenders redundancy by design.
My boss's boss wants me to discover whether this is too redundant - whether we are setting ourselves up for a glitch or failure, that should by common knowledge within the Windows and SQL Server community. Using Google, I haven't found much that would be definitive, or even an example of anyone else doing this.
Anyone have experience or knowledgable opinions to share?
Thanks,
Mike Hinds
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