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Video and audio storage requirements drive doubling of maximum harddrive densities by 2016 by 123wert sdfsf
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Video and audio storage requirements drive doubling of maximum harddrive densities by 2016 by 123WERT SDFSF
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| Article Posted: 02/14/2013 |
| Article Views: 41 |
| Articles Written: 2217 - MORE ARTICLES FROM THIS AUTHOR |
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Video and audio storage requirements drive doubling of maximum harddrive densities by 2016 |
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Business,Business News,Business Opportunities
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Maximum areal densities in hard disk drives (HDD) are expected tomore than double during the five-year period from 2011 to 2016,spurring continued growth for HDDs in storage-intensiveapplications such as video and audio systems, according to an IHSiSuppli Storage Space Market Brief report. HDD areal densities measuring data-storage capacities are projectedto climb to a maximum 1,800 Gigabits (Gb) per square inch perplatter by 2016, up from 744 Gb per square inch in 2011, as shownin the figure below. This means that from 2011 to 2016, thefive-year compound annual growth rate (CAGR) for HDD arealdensities will be equivalent to 19 percent. For this year, HDDareal densities are estimated to reach 780 Gb per square inch perplatter, and then rise to 900 Gb per square inch next year. "The rise in areal density will pave the way for continued growthof the HDD industry," said Fang Zhang, analyst for storage systemsat IHS.
"Densities will double during the next five years, despitetechnical difficulties associated with the perpendicular magneticrecording (PMR) technology now used to create higher-areal-densityhard disks. In particular, growth opportunities will lie inapplications associated with mass enterprise storage requirements,gaming, and in digital video recorders (DVRs) where massivecapacity is required to store high-definition video." Areal density is the amount of data that can be physically storedin a given amount of space on a platter inside an HDD. Higher arealdensities mean that data can be packed more tightly onto thesurface of a disk, resulting in overall greater storage capacity.Areal density equals bit density, or bits of information per inchof a track (BPI), multiplied by tracks per inch (TPI) on a platter. This measure of density is distinct from actual HDD capacity.
Thisis because HDDs commonly use multiple platters. HDD areal density topped the 4-terabyte (TB) mark for the firsttime in September 2011 with the introduction of an external harddrive from Seagate Technology that was designed for desktopapplications. The Seagate HDD had five platters each with an arealdensity of 625 Gb per square inch, equivalent to more than 1 TB perplatter. Only a year earlier in 2010, the highest areal density that couldbe achieved for a platter amounted to 550 Gb per square inch.
Whileno forecast is yet available for the newly minted 4-TB hard diskdrive segment of the storage industry, the current 4-TB products onthe market will surely prove welcome for users hoping toaccommodate copious and ever-increasing amounts of data, includingstorage-intensive formats like gaming, music and videos. A tale of the tape: storage capacity explodes as HDDs increaseareal densities A comparison of higher-areal-density HDDs provides a clear pictureof exponentially greater storage capacity. For instance, 1 TB of storage can hold approximately 350,000 MP3songs at an estimated 2.85 megabytes per song, or up to 1 millionphotos at an estimated 1 megabyte per 2.4 megapixel JPEG-formatphoto, or up to 76 hours of uncompressed digital video at a datarate of 13 gigabytes per hour. With a 4-TB hard drive, thatcapacity quadruples to roughly 1 million songs, or 1,000 hours ofhigh-definition video, or 4,000 hours of standard video, or 1,400movies.
Just five years ago, HDD storage capacity per platter was at amaximum of 180 gigabits per square inch. Platters crossed theterabyte level for the first time in 2007, with hard disk drivescomprising two or more platters becoming more common as HDD storagecapacities increased. Now with the 1 TB per-platter milestonealready reached, 5-TB hard disk drives using five platters could beavailable on the market later this year. Following Seagate's 4-TB external hard disk drive product for thedesktop HDD consumer market, a 4-TB enterprise HDD suitable forbusiness applications was released in April by Hitachi GST; HitachiGST has since been acquired by Seagate archrival Western DigitalCorp. HDDs with more than 1 TB in density per platter have also beenreleased by the industry for the mobile market, with Toshiba's2.5-inch 1-TB version boasting the highest areal density for drivestargeting the portable PC and consumer electronics space.
New developments on the horizon All HDD manufacturers currently use PMR technology for existing HDDproducts, but the industry consensus is that existing PMRtechnology has two to three generations left before reaching itsareal density limit at about 1-terabit (Tb) per square inch. Infact, despite the solid five-year CAGR for higher-density HDDs,growth rates could have been much higher were it not for PMRtechnology nearing its limit. Nonetheless, new developments are on the way. For instance, Seagatein March announced it had achieved in its research lab 1 Tb persquare inch of areal density 30 percent higher than what could beachieved through PMR technology by using heat-assisted magneticrecording (HAMR) technology, a promising approach to enable largeincreases in the storage density of hard disk drives.
HAMR technology is likely to lead the way in creatingnext-generation HDDs, even though satisfactory costs via HAMRcomparable to those of PMR have yet to be seen. In theory, however,advanced technologies like HAMR could extend HDD areal density to arange spanning 5 to 10 Tb per square inch. The highest capacity for3.5-inch HDDs could then reach 30 to 60 TB, while the smaller andthinner 2.5- inch HDDs used in increasingly popular thinnernotebooks could reach 10 to 20 TB. Such lofty heights represent approximately 10 to 20 times thecapacity of current drives, with the new theoretical levels havinga capacity equivalent to those of conventional small and mediumbusiness (SMB) storage systems currently on the market, marking amajor leap in electronic storage for more common, non-enterpriseuses.
Visit IHS iSuppli at . This article originally appeared on EE Times Europe. I am Sports & Entertainment writer, reports some information about weight lifting shoes , meade refractor telescope.
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