HDD And SSD

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HDD and SSD background
A hard disk drive is a computer data storage device use for storing and retrieving digital information using rapidly rotating disks coated with magnetic material. An HDD retains its data even when powered off. Data is read in a random-access manner; the meaning individual blocks of data can be stored or retrieved in any order rather than sequentially. An HDD consists of one or more rigid rapidly rotating disks with magnetic heads arranged on a moving actuator arm to read and write data to the surfaces.
A solid state drive is a data storage device using integrated circuit assemblies as memory to store data persistently. SSD technology uses electronic interfaces compatible with traditional block input/output hard disk drives, thus permitting simple replacement in common applications. SSDs have no moving mechanical components. This distinguishes them from traditional electromechanical magnetic disks such as hard disk drives or floppy disks, which contain spinning disks and movable read/write heads. Compared with electromechanical disks, SSDs are typically more resistant to physical shock, run silently, have lower access time, and less latency.
In my opinion, a solid state drive structure is very simple, but compare with mechanical hard disk is not in the same level. SSD can make computer performance speed up. It look like your computer has one more CPU. A hard disk drive is cheaper and it always has 500GB – 1TB storage. How should we choose? I think it depend on how to use your computer. If you want your computer performance faster, you should use SSD. If you feel your computer performance is enough for you and you want more storage, you can use HHD.
Speed:
HDD has higher latency because HDD is use spinning...

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...dvantages and disadvantages
Advantages of SSD: SSD is lighter than HDD, the size always is 1.8- inch and weight 20-30 grams, Low noise at work, has not too many mechanical parts so just have a little heat, fast heat dissipation.
Disadvantage of SSD: the price is very expensive and the capacity smaller than HDD.

My experience with SSD
If you want to buy a new notebook for desktop replacement, and you have choose to install SSD or HDD. At the same time you still using portable hard disk. You may have a question do you need to install SSD or using the traditional hard disk? If you choose to install SSD, what size is good fit for you?
My suggestion is that if you using a portable hard disk, you can go to install 128 GB SSD. Just remember the SSD just for your software, another data save to your portable Hard disk. It will be upgrading your computer efficiency.

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