Details about Hitachi 2TB Touro DX3 Desktop Hard Drive - USB 3.0 - BlackHitachi 2TB Touro DX3 Desktop Hard Drive - USB 3.0 - Black See original listing
08 Mar, 2012 16:56:21 GMT
Howden, Yorkshire, United Kingdom
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition
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Hitachi 2TB Touro DX3 Desktop Hard Drive - USB 3.0 - Black
Effortless plug and play, with all the quality and reliability expect from Hitachi
Product DescriptionStackable desktop design looks great in a style-conscious workspace.
Solid add-on storage - Perfect extra storage for all your photos, movies, music and documents.
Touro™ Desk external drive provides solid add-on storage for all your photos, movies, music and documents. Stackable, with plug and play simplicity, fast USB 3.0 interface and all the quality and reliability you expect from Hitachi.
Hitachi Global Storage Technologies (Hitachi GST) develops
advanced hard disk drives, enterprise-class solid state drives, and
innovative external storage solutions and services to store, preserve
and manage the world’s most valued data. More than an ordinary hard
drive; available in 2TB
How does USB 3.0 achieve the extra performance?
USB 3.0 achieves the much higher performance by way of a number of technical changes. Perhaps the most obvious change is an additional physical bus that is added in parallel with the existing USB 2.0 bus. This means that where USB 2.0 previously had 4 wires (power, ground, and a pair for differential data), USB 3.0 adds 4 more for two pairs of differential signals (receive and transmit) for a combined total of 8 connections in the connectors and cabling. These extra two pairs were necessary to support the SuperSpeed USB target bandwidth requirements, because the two wire differential signals of USB 2.0 were not enough.
Furthermore, the signaling method, while still host-directed, is now asynchronous instead of polling. USB 3.0 utilizes a bi-directional data interface rather than USB 2.0's half-duplex arrangement, where data can only flow in one direction at a time. Without getting into any more technical mumbo jumbo, this all combines to give a ten-fold increase in theoretical bandwidth.
Isn't USB 2.0 fast enough?
Well, yes and no. USB 2.0 for many applications provides sufficient bandwidth for a variety of devices and hubs to be connected to one host computer. However, with today's ever increasing demands placed on data transfers with high-definition video content, terrabyte storage devices, high megapixel count digital cameras and High Definition Video Capture and portable media players, 480Mbps is not really fast anymore. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) - the actual real-world maximum. Similarly, USB 3.0 connections will never achieve 4.8Gbps. We will likely see a real-world maximum rate of 400MB/s with overheads. At this speed, USB 3.0 is a 10x improvement over USB 2.0.
Inside the box:
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