Monday, 23 January 2012

Learn About SSD Caching Mechanisms

By Joseph Robertson


SSD is a short name for Solid State Drive, more typically called the electronic disk that uses a solid state retention space to the data and provides access to it in a similar manner as would a conventional I/O drive. Hard Drives HDDs and floppy disks are differentiated from SSDs on the principle of their data caching mechanism.

HDDs store info on electromechanical portable parts such as spinning disks, and so on. SSDs, on the other hand, store information on micro chips that are non volatile in nature and containing no moving parts like those of HDDs.

SSDs consist of flash memory modules that function in such a manner that the device keeps the data or data even when the power is turned off. It differentiates itself from RAM in the way that it does not need permanent power supply just to keep the info in the memory as it can hold information for months. Caching SSDs have now become a crucial part of the notebook designs and ultrabooks like Apple MacBook Pro, and so on.

The main cause behind it can be regarded to the undeniable fact that it does not warm up. Normal disk drives consisted mainly of metallic wheels that used to spin data at around 7200rpm that produced heat within the system. SSDs have micro chips instead of the wheel like structure. All of the data is cached in the chips and the leading to no heat emission.

At first the ssd caching speed was awfully low as showed by Tomshardware.com of on 14mb/s. Technical advancements have led companies like Mtron to produce SSDs having a 120mb/s read, and 90mb/s writing speed. SS drives cache data noiselessly. This can also be regarded to the fact that these drives do not have a spinning metallic wheel rather they store info in the micro-chips within them.

Definitely, storing or caching info through SSDs is the most highly effective way but it features a cost. A typical 64Gb ssd drive would cost you anywhere between $100-$150, while you can pick up a 1TB HDD drive for the same cost.




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