World's Smallest 64GB Solid State Disk!

A solid-state drive (SSD) is a data storage device that uses solid-state memory to store persistent data. SSD are distinguished from traditional hard disk drives (HDDs), which are electromechanical devices containing spinning disks and movable read/write heads.

As of 2010, most SSDs use NAND-based flash memory, which retains memory even without power. SSDs is using volatile random-access memory (RAM) also exist for situations which require even faster access, but do not necessarily need data persistance after power loss, or use external power or batteries to maintain the data after power is removed.

A Hybrid Drive= HDD+SDD. In May 2010, Seagate launched the Momentus XT solid state hybrid drive. The SSD portion of new drive is also now a larger 4 GB, compared to 256 MB in th epast.


Compare to traditional HDDs, SSDs are typically less susceptible to physical shock, quiter, and have lower access time and latency. SSDs use the same interface as hard disk drives, thus easily replacing them in kosr applications.

NAND Flash uses floating-gate transistors, but they are connected in a way that resembles a NAND gate. These group are then connected via some additional transistors to a NOR-style bit line array. NAND flash uses tunnel injection for writing and tunnel release for erasing. NAND flash, memory forms the core of the removable USB storage devices known as USB flash drives, as well as most memory card formats and solid-state drives available today.


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References:

http://www.technama.com/2010/world%E2%80%99s-smallest-64gb-solid-state-disk/

http://encyclopedia.thefreedictionary.com/Flash+memory#NAND_flash

http://encyclopedia.thefreedictionary.com/solid+state+disk

http://encyclopedia.thefreedictionary.com/Hybrid+drive