Seagate unveils its new Nytro family of SSDs. In particular, the Nytro 1351 and 1551 models, which feature SandForce DuraWrite technology for high durability.
Seagate Nytro, two series of extremely durable SSDs
Both SSDs operate via the SATA interface, and their sequential speed is up to 560 MB/s read speed and 535 MB/s write speed with the limitations of SATA SSDs.
These SSDs will offer versions from 240GB to 3.84TB and models 1351 and 1551 differ in durability with extremely high maximum guaranteed scripts (Total Bytes Written or TBW) ranging from 435 to 7,000TB in Nytro 1351 and from 1,300 to 21,000TB in 1551.
To demonstrate how high these figures are, we compare them to those offered by a mid-range SSD SATA consumer such as the Samsung 860 EVO and its high-end brother, the 860 PRO.
| 860 EVO (3D TLC) | 860 PRO (MLC) | NYTRO 1351 (3D TLC) | NYTRO 1551 (3D TLC) | |
| 240GB (Seagate) /250GB (Samsung) | 150TBW | 300TBW | 435TBW | 1.300TBW |
| 3.84TB (Seagate) / 4TB (Samsung) | 2,400TBW | 4,800TBW | 7,000TBW | 21,000TBW |
The figures are surprising, and especially when it comes to an SSD based on TLC memories that is denser and therefore less durable than MLCs. However, the controller would make a difference here.
Seagate has revived DuraWrite technology from SandForce, the proprietary manufacturer of SSD drivers. This technology is based on data reduction, i.e. the controller reduces the size of the data written to the flash memory, but can be read without compression.
According to SandForce, this increases the life of the SSD by reducing write times on the NAND that reduces wear and improves write performance without seriously affecting read performance.
These devices have a 5-year warranty and are intended for customers such as data centers. However, they could mean the return of this technology to the consumer market, e.g. it could make the QLC memory more “seductive” and reduce its disadvantages in terms of durability.
This Seagate Nytro isn’t in stores yet and we don’t know about the price.