Seagate announced in its latest earnings call that it has increased production of its as-yet-unannounced 20TB hard drives. The drives use vertical magnetic recording (PMR) technology with two-sizedollar magnetic recording (TDMR) heads. Also, unlike the existing 20TB HDDs based on heat-assist magnetic recording technology, which are only available to select customers, the new hard drives will be offered to all customers generally.

20 TB HDDs appeal to users who need plenty of storage space in their home desktop and NAS systems. For example, a four-drive NAS can store approximately 60TB of data in RAID5 mode, which offers both sufficient capacity and extremely high performance.

Dual Actuator HDDs

Seagate also has dual-actuator Mach. It also speeds up the production of 2 hard drives. Initially, these HDDs were only available to certain customers. The company began listing its Exos 2X14 HDD in May, signaling Seagate’s readiness to offer such drives to a wider range of customers. Here’s the Seagate president speaking for future hard drive technologies:

Mach. currently shipped on a large scale. I am equally excited by customer acceptance for our 2 double actuated discs. As we predicted a few months ago, Mach. We’re seeing more adoption of 2 drivers. You can benefit from the read and write performance gains we provide with these products. We expect dual-actuator drives to become more common as capacities rise above 30TB to support both cost and performance requirements.

Seagate’s Exos 2X14 14TB HDD basically consists of two 7TB drives crammed into a 3.5-inch hermetically sealed helium-filled chassis. The hard disk has 7200 RPM speed, 256 MB multi-partition cache and uses single port SAS 12 Gbps interface.

High-Capacity Storage

As SSDs and 3D NAND technologies evolve rapidly, hard disk drives for mass storage remain unrivaled in cost per gigabyte, reliability and longevity. HDD manufacturers will continue to adopt new energy-assisted magnetic recording (EAMR) technologies such as HAMR or MAMR (microwave assisted magnetic recording) to continue gaining capacity.

Toshiba and Western Digital currently use FC-MAMR (flux-controlled MAMR) and energy assisted PMR (ePMR) while Seagate chooses HAMR technology. HAMR requires new glass media and new write heads. Competing technologies use disks with minimal change (if any) according to the PMR implementation.

The manager of the company said, HAMR is really the way to go 30TB and beyond. We’re so confident right now. ” says. Earlier this year, Seagate said their technology would enable 100TB HDDs by 2030.

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Michael Lewis


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