MDA

MDA

13800 Commerce Parkway Richmond, BC, Canada, V6V 2J3

Data Storage Unit

Data Storage Unit

The heart of the flight qualified Data Storage Unit (DSU) is MDA’s Mass Memory Board (MMB) that combines high-density non-volatile NAND Flash technology, a Leon3 processor, and programmable radiation hardened FPGAs. MDA’s proprietary high-performance architecture integrates all interface, control, and memory functions into a single, low mass, low​ power, reduced envelope implementation. A cost-effective solution for space missions with moderate data rate and memory requirements, each MMB provides 1 Tbit (BOL) of storage and up to 800 Mbps input data rate.

Powerful EDAC routines maintain a high EOL storage capacity and low BER. A Leon3 32-bit processor provides a File Management System (FMS) and capability for ancillary data handling and payload or instrument control.

MDA’s DSU can concurrently write to one file and read from two files with pass-through capability and CCSDS Transfer Frame construction for playback at a fixed downlink rate of up to 600 Mbps. Based on QML-Q or equivalent space qualified EEE parts, the DSU is suited for a radiation tolerant environment.

A standard DSU contains two MMBs with an internally redundant MDA Electronic Power Conditioner (EPC) housed within a flight-qualified chassis to serve as a redundant mass memory unit. Operating two MMBs concurrently can double unit storage and data handling capacities.

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