Overall Disk Performance is determined by: – Latency (time for sector to rotate under heads) – Seek time (time for heads to move to a new track) – Speed of I/O technology (SATA, SAS, FC, etc) – Speed and size of disk drive buffer memory
All of the above will have an impact on drive performance.
It will depend on the data access profile as to which one will have the most impact.
For random data access,
the seek time and the latency will have the most impact For sequential data access, disk capacity and memory size might have more impact