Data Transfer Rates states the maximum speed at which data can be read/write onto the storage disk.
less than the data transfer rate
7800 kB/s
The 50X maximum speed, 5.25-inch half-height form factor CD-ROM drive features high data transfer rate up to 7, 500 KB/Sec.
1x speed is about 150Kb per second.
disk rotational speed in RPM
It depends on the PATA drive in question. That said, the fastest UDMA interface when used with an 80-wire cable is 133 MB/s. From there, the maximum transfer rate for a SATA generation 1 drive is 150 MB/s. For SATA 2, it is 300 MB/s. For SATA 3, it is 600 MB/s.
Data transfer rate (also called bandwidth)
less than the data transfer rate.
Dear...users,Actually HDD speed how to calculate means ....Use of RPM( Rate+Per+Minute)
Transfer rate.
How quickly a drive can locate the correct track and sector once a data request has been made
access time is the amount of time required to deliver item from memory to processor. While, transfer rate is the speed with which data, instruction, and information transfer to and from a device. Transfer rate for storage are stated in KBs, MBps and GBps..etc