Exascend PR4 (SSDs)

2024: Product Announcement

On April 10, 2024, Exascend announced the PR4 series of solid state drives (SSDs) with increased reliability and resistance to external influences. The devices are designed to operate in extreme conditions, including the aerospace industry and the manufacturing sector.

The peculiarity of the new products is the use of Neutron Shield 2.0 technology, which provides protection against radiation. It is said about compliance with the military standard of MIL-STD-810: the products are not afraid of shocks, falls, vibration, etc. The drives are also not afraid of moisture thanks to a special conformal coating. Dual Power Loss Protection (PLP) helps you save your data when you lose power suddenly. In addition, two copies of the firmware are provided for recovery in case of failures. The devices can be operated at temperatures from -40 to + 85 degrees Celsius.

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Exascend

The drives are based on 176-layer 3D TLC flash memory chips. The PR4 family includes versions in M.2 2280/2242, E1.S and U.2 formats: they all use the PCIe 4.0 interface (NVMe 1.4 specification). M.2 solutions have sequential read and write speeds of up to 3200 and 3000 MB/s, respectively. The number of I/O operations per second (IOPS) when working with data blocks of 4 KB - up to 400 thousand for arbitrary reading and up to 50 thousand for arbitrary writing. E1.S and U.2 products are capable of reading information at speeds up to 3500 MB/s and writing at speeds up to 3000 MB/s. The IOPS indicator when reading and writing - up to 500 thousand and 55 thousand.

SSDs have a capacity of 960 GB to 7.68 TB, and a 15.36 TB version is also available for modification of the U.2. Perhaps enciphering according to the AES algorithm with a key of 256 bits. The average time between failures (MTBF) reaches 2 million hours. The devices have a three-year warranty.^[1]

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