We have used other products from other vendors in the same category. We are using mostly Dell products for the storage and servers unless a customer comes specifically demanding another brand. Otherwise, we are pushing the Dell products. Other than that, another brand we might recommend is Cisco ACS. This is based on customer needs only.  

We use these products so that we do not create too much complication for ourselves and can best serve our clients. Comparing other products that are competing with Dell EMC (Enhanced Memory Controller), Dell seems to us to always come out on the high-side.  

We previously used vSAN.

We switched because ScaleIO is a pioneer in all-flash; therefore, I applied that in our lab.