That's a pretty wide open question, can you narrow down the options you are considering? What are your system requirements? Are you looking for high capacity basic storage, or virtualization, software defined storage, etc?
In general, they offer hyper-converged servers/storage appliances that can be configured for high levels of system redundancy.
As an additional note, we reached out to Pivot3 earlier this week to publish an update report on them.

Why Choose Pivot3?

I am seeking information why anyone would use Pivot 3 for video versus any other options.....?