Which HP Storage solution is built on an architecture that allows a customer to scale capacity and performance linearly without incurring downtime or performance bottlenecks?

HP StoreSure is a data protection and business continuity solution, not a scale-out storage platform designed for linear capacity and performance growth.

HP StoreServ (3PAR) offers strong scalability through its mesh-active controller architecture, but it scales by adding controllers and drive shelves in a traditional dual-controller array model rather than through a purely linear peer-to-peer node expansion.

HP StoreEasy is a simple, fixed-configuration NAS solution intended for file storage workloads and is not architected for linear scale-out of capacity and performance.

HP StoreVirtual (based on the LeftHand OS) uses a clustered, peer-to-peer architecture where every node added to the cluster contributes equally to both capacity and performance, achieving true linear scaling. Because there is no single controller or head node acting as a bottleneck, performance scales proportionally with each added node, and nodes can be added online with no disruption to running workloads.