Optical / Flash / HDD
DVD / Blu-ray
The Digital Versatile Disc (DVD) is a digital storage medium, which is similar to a CD, but has much higher
storage capacity. This is made possible by a higher data density and two parallel data layers. DVD is a further
development of optical storage media. It is the third generation after CD and the magneto-optical MiniDisc.
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CD-R
The Compact Disc Recordable (CD-R) is a write-once CD, which can be written to using a commercially available burner.
Apart from the CD-R, there is also the Compact Disc Rewritable, which allows the data storage medium to be written to
multiple times (up to 1,000 times). Package writing even enables a CD-RW to behave almost like a hard drive.
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MOD / UDO
The Magneto-Optical Disc (MOD) is a rotating storage medium, which is written to magnetically and read from
optically. Magneto-optical storage media are your guarantee of the highest data security. The underlying laser
technology makes them an absolutely secure, exceptionally fast, and the most efficient data storage medium.
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Solid State Drive
A Solid-State Drive (SSD), also called Solid-State Disc, is a storage medium which can be installed and addressed
like a conventional hard disc. It contains no rotating disc or other moving parts, as only solid-state memory
modules of similarly large capacity are used.
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Hard Discs
Portable USB 2.0 hard discs, from the palm-sized 2.5-inch through to 3.5-inch for flexible and mobile
use, now have a capacity of up to 2 TB. Convenient FireWire connections or even the eSATA technology
provide impressively fast transfer rates.
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Flash / USB
Flash memory is a memory module, which can store data permanently even without a constant supply of electricity.
If Flash memory is disconnected from the source of electricity, the memory contents are preserved. This is a great
advantage over conventional (SD) RAM memory, as used in computers (if (SD) RAM is disconnected from the source of
electricity, the memory is immediately erased).
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