If you’re considering deploying an SDS solution and looking for simplicity, flexibility, and savings, ESG Lab suggests considering OSNEXUS.
— Enterprise Strategy Group

QuantaStor is a unified Software Defined Storage (SDS) platform designed to scale up and out to make storage management easy while reducing overall enterprise storage costs. QuantaStor SDS addresses a broad set of storage use cases including server virtualization, big data, cloud computing, and high performance applications through scale-out physical and virtual storage appliances (VSAs). With support for all major file, block, and object protocols including iSCSI/FC, NFS/SMB and S3/SWIFT, QuantaStor storage grids may be configured to address the needs of complex workflows which span sites and data-centers. 

Storage Grid Technology
QuantaStor’s storage grid technology enables scale-up and scale-out to 64 physical or virtual storage appliances and over 100 petabytes of managed storage.   QuantaStor's storage grid technology combines appliances together so that they're easy to manage as a single entity.   All appliances within a given storage grid present a single federated real-time view of all appliances within the grid.   Within a storage grid many independent pools and storage clusters may be setup to deliver highly-available file, block, and object storage. 

Flexible, Modular Architecture
The layered architecture of QuantaStor SDS provides solution engineers with unprecedented flexibility and application design options that maximizes workload performance and fault-tolerance for a wide range of storage workloads.   To provide organizations with maximum hardware flexibility OSNEXUS provides published Reference Configurations on all major server platforms including Dell, HPE, Cisco, Supermicro, Intel/HGST, and Lenovo.  Storage grids can use a combination of hardware from different storage vendors and different generations of hardware all within the same storage grid.

End-to-End Security
QuantaStor SDS includes end-to-end security coverage enabling multi-layer data protection “on the wire” and “at rest” for enterprise and cloud storage deployments. Combining protocol-level encryption with SMB, IPsec and HTTPS across any storage grid, hardware and software disk drive encryption with Intel AES-NI technology and advanced user security featuring role-based access controls, QuantaStor SDS end-to-end security is ideal for industry applications ranging from energy, healthcare, financial services and education to government. 

Simplified Management
The intuitive QuantaStor SDS management interface and configuation workflow manager eliminates many complicated steps commonly associated with legacy storage applications to provide IT generalists powerful storage solution configuration options. 

Further Reading:
ESG Lab First Look: Simplified Scale-out SDS for Block, File, and Object
QuantaStor SDS v4 Overview