Seagate's 14TB drives use standard PMR (Perpendicular Magnetic Recording), which has been the industry's recording technology of choice for nearly a decade. Seagate's next-gen 16TB models will mark the debut of HAMR (Heat Assisted Magnetic Recording) technology, which uses tiny lasers to increase storage density.
We'll have to wait for those exciting next-gen models until next year, but Seagate's new 14TB drives mark the debut of TDMR (Two-Dimensional Magnetic Recording). TDMR uses two read elements in the drive head to improve accuracy, thus increasing storage density.
Like most modern HDDs, the new 14TB models all come with a helium design, which reduces internal turbulence by replacing the air inside the hard drive with helium. This boosts reliability and capacity while reducing weight and power consumption.
14TB Barracuda Pro
All hard drives in the BarraCuda family come equipped with Seagate's Multi-Tier Caching Technology (MTC). This technology boosts HDD performance by applying intelligent layers of NAND, DRAM, or media cache. The desktop models do not use NAND caching, instead relying upon a 256MB DRAM cache and a complimentary media cache, which is a section of fast outer tracks reserved to boost the performance of frequently-accessed data. Seagate rates the Barracuda Pro drives for 300,000 load/unload cycles, which is standard for a desktop-class hard drive.
14TB IronWolf And IronWolf Pro
The standard $530 14TB IronWolf drives come with a three-year warranty and feature a maximum transfer rate of 210 MB/s. These models are designed to be used in groups of one to eight drives and come with a 180TB/year workload rating, which is surprisingly less than the Barracuda Pro desktop models (300TB/year). However, these drives are tailored for the frequent spin-up/spin-down environments found in a NAS and have a much higher 600,000 load/unload cycle rating. The drives also come with a 256MB DRAM cache and draw slightly more power than their 12TB counterparts with a 5.3W/7.9W idle/active rating (0.3W/0.1W increase, respectively).
The $600 14TB IronWolf Pro models step up to a five-year warranty that includes two years of Seagate's data recovery service. Seagate designed the Pro models to operate in groups of up to 24 drives, and they come with a more robust 300TB/year workload rating. They also offer up to 250MB/s of throughput and come with a 256MB DRAM cache. The Pro drives have the same power consumption rating as the standard IronWolf models.
Seagate also beefed up its SkyHawk line with a $510 14TB model. These drives are tailored for video surveillance applications, such as DVRs and NVRs, and can hold up to 9,000 hours of HD video from up to 64 simultaneous camera inputs. These drives come with a three-year warranty.
Seagate's new 14TB drives also mark the debut of TDMR (Two-Dimensional Magnetic Recording) in the company's drives. TDMR uses two read elements in the drive head to improve accuracy, thus increasing storage density by allowing the use of narrower tracks. The technology allowed Seagate to improve from an areal density of 923 Gb/in2 to 1077 Gb/in2.
All of Seagate's new HDDs begin shipping today.