How to choose a hard disk?
A hard disk or hard drive is a ROM, a devicefor permanent storage of data on a computer. The quality of the hard drive depends on the security of your data. When a hard disk crashes, it is very difficult to restore information from it, and sometimes it is impossible. Therefore, the choice of hard disk should be approached very carefully. Here are some recommendations for choosing a hard disk.
Hard Drive Specifications
Capacity. Capacity is a parameter that determines whichthe amount of information can fit on the hard drive. The capacity of modern hard drives is measured in gigabytes or even terabytes. The higher the capacity, the more data you can "get" on the hard drive. Modern hard drives have a large capacity: 500-700 GB or even a few terabytes.
Rotational speed. This parameter affects the read speedinformation and write information to the hard disk. Measured in revolutions per minute. The higher the speed of rotation of the hard disk, the higher the speed of reading and writing information. In our time, the most common rotation speed, equal to 7200, 5400 and 4500 rpm (rpm).
Interface connection. The interface defines the wayconnect the hard drive to the motherboard. Now the standard is the SATA (Serial ATA) interface, which is an improved version of ATA's AT (AT Attachment for Disk Drives) interface, which is also called IDE (Integrated Drive Electronics - a drive with an integrated controller ). The speed of data transfer from the motherboard to the hard drive is higher with the SATA connection interface.
The amount of cache. This parameter determines the amount of buffer memoryhard drive. In normal mode, the performance of the hard disk has little effect, but when you write information from one hard drive to another, it can play a significant role in the recording speed. In most modern hard drives, the cache size is 8, 16 or 32 MB. Hard disks with a large amount of cache memory are more expensive.
Choosing a hard disk for your computer,always first determine for what purposes you are acquiring it. If you do not plan to store large amounts of information on your computer, install a lot of modern games that require a lot of space, then you do not need to buy a hard disk with a huge capacity. Also, if your computer is designed for work in the office or at home, do not pursue high speed and cache volume, usually in this mode of operation all the advantages of such high characteristics are barely noticeable.
