from the how-many-do-you-need dept.
Seagate has launched three new 12 TB helium-filled hard disk drives containing eight perpendicular magnetic recording (PMR) platters:
These are not the first 12TB drives in the market, as enterprise versions from both Seagate and Western Digital have been around for some time. However, Seagate is the first vendor to bring down the prices and ship 12TB drives in the consumer market.
From a hardware viewpoint, the three drives are similar to the Seagate Enterprise Capacity v7 drives launched in March 2017. All of them features eight PMR platters with a 923 Gb/in2 areal density in a sealed enclosure filled with helium. That said, the Barracuda Pro Compute, meant for desktop use, doesn't come with rotational vibration (RV) sensors or dual-plane motor balancing hardware. The RV sensors and the dual-plane balance / AgileArray features enable reliable performance in multi-drive enclosures. The other important differentiation aspects include firmware features, warranty / workload ratings, and value-added services like the Seagate Rescue Data Recovery.
Two of the drives come with 5 year warranties.
Previously: HGST Announces 10 Terabyte PMR Hard Drive
AnandTech Interview With Seagate's CTO: New HDD Technologies Coming
Seagate's 12 TB HDDs Are in Use, and 16 TB is Planned for 2018
Western Digital Begins Shipping 12 TB Helium-Filled Drives with 8 Platters
Seagate HAMR Hard Drives Coming in a Year and a Half
Glass Substrate Could Enable Hard Drives With 12 Platters
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HGST, a division of Western Digital, has announced its second 10 terabyte helium-filled hard drive. The Ultrastar Archive Ha10 , announced back in June, was a shingled magnetic recording (SMR) drive. Now HGST has launched the Ultrastar He10, a 10 TB helium-filled HDD using traditional perpendicular magnetic recording (PMR). With a total of 7 platters, each platter stores around 1.43 TB. AnandTech reports:
Hard drives are struggling to reach the 10TB capacity point with traditional PMR technology. While Seagate did announce a few 8TB PMR drives earlier this quarter, it really looks like vendors need to move to some other technology (shingled magnetic recording or heat-assisted magnetic recording (HAMR)) in order to keep the $/TB metric competitive against the upcoming high-capacity SSDs. As of now, helium seems to be the only proven solution causing minimal performance impact and HGST appears to have a strong hold in this particular market segment.
Ars Technica has some speculation about the price:
There's no price listed for the Ultrastar He10, but it'll probably cost about £600/$800. The first helium-filled drives were extortionately expensive, but the He8 is now down to around £400/$550, which isn't bad for an enterprise drive (these things have a 5-year warranty and other such niceties, too). Seagate's shingled 8TB drive is much cheaper (£170/$200), but you get a shorter warranty and less enterprisey stuff.
AnandTech interviewed Mark Re, SVP and Chief Technology Officer of Seagate, to talk about plans for upcoming hard disk drive (HDD) technologies.
Although shingled magnetic recording (SMR) lowers write speeds, a number of techniques help reduce the impact, such as banding together SMR tracks into certain zones with perpendicular magnetic recording (PMR) zones covering the rest of the drive rather than shingling, or adding more SLC NAND and DRAM cache. Seagate will be expanding its use of SMR to increase density in client drives, not just "cold storage" drives, but will be using partial SMR/partial PMR and caching in order to mitigate write performance issues.
For the moment, Seagate won't be using helium outside of products for capacity-demanding datacenter customers (such as the Seagate Enterprise Capacity 10 TB HDD). The company can reduce fluid flow forces inside air-filled HDDs using purely mechanical solutions. On the other hand, Western Digital has introduced helium-filled drives aimed at consumers and has a marketing name for its technology (HelioSeal).
Seagate claims that it has had 12 terabyte hard disk drives "in the field" for "several quarters", and that 14 TB and 16 TB drives are coming soon. The company has a goal of producing 20 TB hard drives by 2020:
The enterprise is also moving en masse to speedy SSDs for high-performance workloads, which recently led the company to halt further development of 15K HDDs. Many analysts opine that 10K HDDs are next on the chopping block. In response, Seagate shifted its production might to more lucrative high-capacity enterprise HDDs, which now account for 37% of its revenue, to leverage the shrinking HDD price-per-GB advantage over SSDs. Seagate recently closed its Suzhou, China manufacturing plant to reduce manufacturing costs, but it simultaneously increased its investments in other facilities to address the challenges of moving from six platters per drive to eight. The net effects of its maneuverings total $300 million in savings per year.
Seagate is essentially retreating into the high-capacity segment, and the company announced that its new 12TB HDDs have already been shipping to key customers for several quarters. Seagate CEO Steve Luczoalso noted that the company would offer 16TB drives within the next 12 to 18 months. Seagate's new high-capacity offerings are destined for data centers, NAS, DVRs, and a booming surveillance market.
Western Digital is shipping 12 TB helium-filled hard disk drives containing eight 1.5 TB platters:
Western Digital on Wednesday announced that it had begun to ship its HGST Ultrastar He12 hard drives with 12 TB of capacity. The HDDs are the first drives to employ eight platters, so the fact that Western Digital is now shipping them is important not only for its datacenter customers who need massive storage capacities, but also because the drive represents a significant step forward from a technology point of view.
The HGST Ultrastar He12 is based on Western Digital's fourth-generation HelioSeal technology, which uses eight perpendicular magnetic recording platters with 1.5 TB capacity each. To add the eighth platter, Western Digital had to redesign internal components of its HDDs (including arms and heads) significantly. In addition, the company increased areal density of the platters, which improved the sequential read/write performance of the new hard drives. In particular, Western Digital claims that the HGST Ultrastar He12 has a sustained transfer rate of 255 MB/s, an average latency of 4.16 ms, as well as an average seek time of around 8 ms.
Seagate last week made two rather important announcements regarding its current and upcoming hard drives. First, the company said that it had shipped 35 million HDDs based on shingled magnetic recording (SMR) technology. Second, the manufacturer confirmed plans to launch commercial hard drives based on its heat-assisted magnetic recording (HAMR) technology by the end of 2018, the first time the company set a precise launch timeframe for such HDDs.
[...] This is not the first time that Seagate has made a HAMR-related announcement, but this is the first time when the company has set a particular launch timeframe for such drives. Previously, Seagate has implied that the first HAMR-based HDDs would feature a capacity of 16 TB, which is a significant increase from 12 TB hard drives due to be released in the coming weeks. Given the fact that data centers cry out for high-capacity drives, it is inevitable that HAMR-based HDDs with increased performance and higher capacities will be in high demand. Keeping in mind that late 2018 (by "late" companies usually mean the fourth quarter) is over a year away, Seagate is not sharing details about experimental deployments of HAMR-based HDDs that may be planned for 2017/early 2018.
An upcoming Western Digital 14 TB 3.5" HDD will store 1.75 TB per platter.
Using a glass substrate instead of aluminum could allow 12 platters to be crammed into a 3.5" hard disk drive enclosure:
Even if many modern systems eschew classic hard drive storage designs in favor of solid state alternatives, there are still a number of companies working on improving the technology. One of those is Hoya, which is currently prototyping glass substrates for hard drive platters of the future which could enable the production of drives with as much as 20TB of storage space.
Hard drive platters are traditionally produced using aluminum substrates. While these substrates have enabled many modern advances in hard drive technology, glass substrates can be made with similar densities, but can be much thinner, leading to higher capacity storage drives. Hoya has already managed the creation of substrates as thin as 0.381mm, which is close to half the thickness of existing high-density drives.
In one cited example, an existing 12-terabyte drive from Western Digital was made up of eight platters. Hoya believes that by decreasing the thickness of the platters through its glass technology, it could fit as many as 12 inside a 3.5 inch hard drive casing. That would enable up to 18TB of storage space in a single drive (thanks Nikkei).
When that is blended with a technology known as "shingled magnetic recording," 20TB should be perfectly achievable.
Toshiba is reportedly planning to release a 14 TB helium-filled hard drive by the end of the year.
Also at Network World.