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from the still-life-in-spinning-rust dept.
https://www.anandtech.com/show/14869/western-digital-announces-18-tb-eamr-hard-drive
Marking an important step in the development of next-generation hard drive technology, Western Digital has formally announced the company's first hard drives based on energy-assisted magnetic recording. Starting things off with capacities of 16 TB and 18 TB, the Ultrastar DC HC550 HDDs are designed to offer consistent performance at the highest (non-SMR) capacities yet. And, with commercial sales expected to start in 2020, WD is now in a position to become the first vendor in the industry to ship a next-generation EAMR hard drive.
The Western Digital Ultrastar DC HC550 3.5-inch hard drive relies on the company's 6th Generation helium-filled HelioSeal platform with two key improvements: the platform features nine platters (both for 16 TB and 18 TB versions), and they using what WD is calling an energy-assisted magnetic recording technology (EAMR). The latter has enabled Western Digital to build 2 TB platters without using shingled magnetic recording (SMR).
Since we are dealing with a brand-new platform, the Ultrastar DC HC550 also includes several other innovations, such as a new mechanical design. Being enterprise hard drives, the new platform features a top and bottom attached motor (with a 7200 RPM spindle speed), top and bottom attached disk clamps, RVFF sensors, humidity sensors, and other ways to boost reliability and ensure consistent performance. Like other datacenter-grade hard drives, the Ultrastar DC HC550 HDDs are rated for a 550 TB/annual workload, a 2.5 million hours MTBF, and are covered by a five-year limited warranty.
(Score: 2) by hendrikboom on Friday September 20 2019, @02:12AM (2 children)
Reliability also matters.
(Score: 2) by c0lo on Friday September 20 2019, @09:48AM
Hey! There's no words to describe the thrill of loosing your data at high speed.
https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
(Score: 0) by Anonymous Coward on Saturday September 21 2019, @03:50AM
I use magnetic disks to provide more long term storage reliability than SSDs. I have some drives up to 30 years old that still have data on them, and while there has been degradation, with check-summing and a percentage set aside for parity/ecc/etc recovery data, all of those should be good for 30-40 years of storage so long as the magnetic poles don't wipe it, or the head/drive motors don't stick.
Most HDDs are still far more reliable than SSDs for cold storage, and have the potential for recovery beyond that, that SSDs simply lack.