Improving System Performance Using Solid-State Disk

Solid-state disk (SSD) provides 100 times the I/O performance of hard drives (HDDs) but at 100 times the cost per gigabyte or more. Compared with other techniques such as in-memory databases and database tuning, SSD can be a cost-effective solution to improving the performance of I/O-bound applications. But in order to achieve the proper balance between cost and performance, it is necessary to first eliminate duplicate data produced by the applications, identify precisely which data and database elements are causing the I/O bottleneck, move only those data and database elements to the SSDs and then move them back to slower but less expensive HDDs as soon as such a move will not impact application performance.