Seagate on Wednesday introduced its Exos X24 family of hard drives, it's highest capacity series of drives to date. The new family is comprised of both conventional magnetic recording technology (CMR) and shingled magnetic recording (SMR) models, with the CMR drive topping out at 24 TB, while SMR brings the peak capacity up to 28 TB. Both are, as of now, the highest-capacity HDDs in their respective segments. But perhaps the most important technological development with the Exos X24 lineup is that it uses a platform that will be largely re-used for the upcoming HAMR drives.
The Seagate Exos X24 3.5-inch helium-filled hard drive family includes 12 TB, 16 TB, 20 TB, and 24 TB models, which are built using up to 10 2.4 TB platters. Seagate's platters feature perpendicular magnetic recording (PMR) and heads utilizing two-dimensional magnetic recording (TDMR) technology (to minimize adjacent track interference and ensure reliable reading at high track pitch densities). In addition, Seagate offers a sole 28 TB SMR version of the Exos X24 to select cloud customers who can self-manage shingled recording in their datacenters.
