Key words for selecting Hard drives
- Author:Charlotte
- Source:http://www.bluraysupplier.com/
- Release on :2015-11-26
Recently a friend asked about hard drive for surveillance and recording use.Now let's talk about some key parameters for selecting Hard drives.
1. Capacity. As a data memory of a computer system, hard disk capacity is the most important parameter. Hard drive capacity indicator also includes a hard disk platter capacity.
The so-called hard disk platter capacity refers to a monolithic disc capacity, disc capacity, the lower the unit cost, the average access time is shorter.
We buy hard when he is 500G, but the actual capacity smaller than the 500G. Because the factory is by 1MB = 1000KB to conversion,
So we bought a new hard drive, more than the actual amount of time you want to buy a small point.
2.Spindle speed. Speed ??is one of the important parameters indicate speed grade hard disk, it is one of the key factors that determine the internal hard disk transfer rate,
In large part a direct impact on the speed of the hard drive. The faster hard drive speed, faster to find a file,the relative hard disk transfer speed is improved.
Ordinary hard drive speed household generally 5400rpm, 7200rpm several high-speed hard drive is the first choice for desktop users; and for laptop users is 4200rpm, 5400rpm based, SCSI hard disk speed server used in the basic use 10000rpm, even 15000rpm.
3. The average access time reflects the hard disk read and write speeds.
4. The transmission rate (Data Transfer Rate) hard drive data transfer rate is the speed of the hard disk read and write data, in megabytes per second (MB / s) hard disk data transfer rate also includes an internal data transfer rate and external data transfer rate.
Internal transfer rate depends on the rotational speed of the hard disk. External data transfer rate and hard disk interface type and size of the hard disk cache.
Famous hard brand: Seagate,WD(Western Digital),Hitachi,Toshiba,Samsung
1. Capacity. As a data memory of a computer system, hard disk capacity is the most important parameter. Hard drive capacity indicator also includes a hard disk platter capacity.
The so-called hard disk platter capacity refers to a monolithic disc capacity, disc capacity, the lower the unit cost, the average access time is shorter.
We buy hard when he is 500G, but the actual capacity smaller than the 500G. Because the factory is by 1MB = 1000KB to conversion,
So we bought a new hard drive, more than the actual amount of time you want to buy a small point.
2.Spindle speed. Speed ??is one of the important parameters indicate speed grade hard disk, it is one of the key factors that determine the internal hard disk transfer rate,
In large part a direct impact on the speed of the hard drive. The faster hard drive speed, faster to find a file,the relative hard disk transfer speed is improved.
Ordinary hard drive speed household generally 5400rpm, 7200rpm several high-speed hard drive is the first choice for desktop users; and for laptop users is 4200rpm, 5400rpm based, SCSI hard disk speed server used in the basic use 10000rpm, even 15000rpm.
3. The average access time reflects the hard disk read and write speeds.
4. The transmission rate (Data Transfer Rate) hard drive data transfer rate is the speed of the hard disk read and write data, in megabytes per second (MB / s) hard disk data transfer rate also includes an internal data transfer rate and external data transfer rate.
Internal transfer rate depends on the rotational speed of the hard disk. External data transfer rate and hard disk interface type and size of the hard disk cache.
Famous hard brand: Seagate,WD(Western Digital),Hitachi,Toshiba,Samsung