Western Digital has released a new 3.5″ format 10TB hard drive in the HGST Ultrastar He10. The new 10TB adds to the HelioSeal line of drives that are helium-filled for more efficient operation (56% more efficient that traditional air-filled drives).

The Ultrastar He10 is preceded by 6TB and 8TB versions and is the third-generation in the enterprise line. HGST’s spec sheet rates the data transfer speeds at an impressive 249MB/s for the new 10TB model (up from 225MB/s in the 8TB model). With an annual failure rate of 0.35%, it includes a 5-year reliability warranty.

No word yet on pricing but the 8TB model currently runs $599, so expect it to come in north of that mark when it hits shelves soon.