All-Flash storage is taking over many production storage responsibilities but because of cost, most organizations can’t justify placing all production workloads on all-flash storage. These organizations then certainly can’t justify placing secondary storage and data protection workloads on all-flash.
These systems, in most cases, have the performance capabilities to support all of these various workloads but the high cost of flash relative to high capacity hard disk drives makes the goal of an all-flash data center impractical.
The elephant in the room of course is how can the cost of all-flash storage be driven down to the point that it is competitive with hard disk drives and maybe eventually tape technology? The answer is multi-faceted and can be found in this eBook: Overcoming the Real Roadblocks to the All-Flash Data Center.