4.5 TB 3U VPX Rad-Tolerant SSDR

On-orbit data storage, commercially available

Preserve up to 4.5 TB of data in radioactive environments

The RH304T solid-state data recorder (SSDR) enables immense storage capacity, high performance and long-term data integrity for applications with the potential for radiation exposure in space and on the ground, such as LEO satellites, high-altitude aircraft, airborne weapons and mission-critical ground computing systems. The RH304T utilizes enhanced error correction with a unique two-pass correction scheme and the latest generation 3D NAND in SLC mode, ensuring the highest possible reliability.

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FeaturesSpecificationsApplications
Features
  • 4.5 TB large geometry, industrial-grade SLC NAND flash memory
  • Dual-host (2 hosts with 4-Lanes each) and dual-port (1 host with 8-Lanes)
  • All components radiation tolerant by design (except NAND) at > 100 krad
  • Two-pass error correction with proprietary horizontal Reed-Solomon and TLC bit sweep algorithms
  • Designed for fault tolerance with multiple failed NAND flash devices
  • VITA 78 3U SpaceVPX compatible, P2 unpopulated
  • Ruggedized construction and assembly

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Specifications
  • SRIO interface running at 3.125 Gbps
  • Dual-port reads/writes 16 Gbps
  • Dual-host writes 9.2 Gbps, reads 8 Gbps

Radiation Tolerance

  • Total ionizing dose (TID) > 100 krad (all components except NAND)
  • TLC NAND in SLC mode. SEE/TID testing in progress; 25 krad TID expected

RTG-4-based NAND processor and controller

  • Configuration upsets immunity to LET > 103 MeV.cm2/mg
  • Single-event latch-up (SEL) immunity to LET > 103 MeV.cm²/mg
  • Registers SEU rate < 10–12 errors/ bit-day (GEO solar min)
  • Single-event transient (SET) upset rate < 10–8 errors/bit-day (GEO solar min)
  • TID > 100 krad

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Applications
  • LEO satellites
  • Nuclear industry
  • Medical industry
  • High-altitude aircraft
  • Airborne weapons
  • Mission-critical ground computing subsystems
  • Missile launch vehicles
  • Scientific missions

CASE STUDY

Mercury Supplies Solid-State Data Recorders For NASA'S JPL Emit Science Mission

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WHITE PAPER

Protecting Satellite Imagery From Radiation

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PRESS RELEASE

Mercury’s solid-state data recorders headed to International Space Station

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