The data transfer rate or DTR, is the speed that data can be transmitted between two devices. The DTR is also sometimes referred to as the throughput. The data transfer rate of a device is usually expressed in kilobits or megabits per second. This is abbreviated to kbps or mbps. The throughput can also be expressed in kilobytes or megabytes, which is KB/sec or MB/sec, abbreviated.
The equivalent values are shown below:
1,024 bits = 1 kilobit (kb)
8 kb = 1 kilobyte (KB)
128 KB = 1 megabit (mb)
8 mb = 1 megabyte (MB)
1,024 KB = 1 megabyte (MB)
128 MB = 1 gigabit (gb)
8 gb = 1 gigabyte (GB)
1,024 MB = 1 gigabyte (GB)
Because programs and data are becoming larger and larger, the need for faster data transfer rates is becoming more and more important. But because of the fast turnover of technology that try to improve data transfer rates, many devices and components now possess different specifications.
One example is RAID or Redundant Array of Independent Disks, which is composed of multiple hard drives that are joined together in order to pool their resources into a single storage system. These drives can reach into the hundreds of gigabytes. When transmitting and retrieving data, the data transfer rate of each drive becomes very important. The reason is simple, the RAID will adopt the data transfer rate of the slowest drive in the pool to prevent the loss of data when it travels from the slow disk to the faster hard drives. Because of this, it is important that when building a RAID system, all of the drives should have the same model and manufacturer in order to ensure that the same data transfer rate is supported by all the drives.