Unlocking native Flash performance

At Radian we’ve taken a system-driven approach to redefining software for Flash storage. Our Symphonic™ Cooperative Flash Management architecture replaces the SSD Flash-Translation-Layer (FTL) to overcome performance, cost, and endurance limitations while providing the functionality required of a data center class product.


NV-RAM + Flash

OC2 on U.2

Configurations with Symphonic CFM or Radian’s implementation with an Open-Channel 2 compliant interface

U.2 form factor with Dual Port or Single Port configurations

Up to 12GB PMR style User NV-RAM

Up to 12TB Flash



Radian's Implementation with an Open-Channel 2 interface

Starting with its new RMS-350 SSD, Radian is offering a configuration that leverages some of its innovative Cooperative Flash Management functionality into an implementation that is compliant with the new Open-Channel 2 interface specification.



NVMe Bakeoff

NV-RAM vs. 3D X-Point™

Check out Part 1 of a three part series on NV-RAM on NVMe, starting with a benchmark comparison against an NVMe Optane™ SSD.


Software-Defined Flash:
the answer to the SSD Delta

Why can’t conventional SSDs deliver the capacity, performance,
or endurance of their own raw Flash?

FTLs and the SSD Delta

Utilizing NAND memory for data storage requires performing Flash management processes, such as garbage collection and wear leveling.

SSDs perform these processes transparently in a black box known as the Flash-Translation-Layer (FTL) that abstracts the processes and emulates hard drives for backwards compatibility.  But this abstraction significantly reduces the native performance and cost metrics available from the raw NAND memory, creating a gap that we call the SSD Delta.

Challenges from SDF

  • Difficult integration and significant modifications to target host software stacks
  • Burdens host with low level NAND details
  • Lacks Forward Compatibility and ties host software to geometry and vendor-specific NAND properties
  • Lacks Reliability, Availability, and Serviceability features
  • Poor scalability as SSDs are added to a system


As a subset of SDF, Radian’s Symphonic technology preserves the SDF advantages while specifically addressing each of the resulting challenges to provide the functionality required of a data center class product.