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 Disk and Databases

dbazine talks about databases and disk in: Disk Architectures for Databases and Disk Management for Oracle.

"While disk volume capacity has been growing logarithmically, disk I/O capacity has been growing as a direct factor with disk rotational speed. So while volume capacity has jumped from 100 megabytes or less and 3600 rpm to 200 gigabytes at 10k or 15K rpm, the corresponding I/O rates have only increased from 30 IOPS to a around 150 IOPS (for sequential I/O only). This indicates that capacity has increased over two million times, while I/O rates increased by only a factor of five."

 (Submitted by Noel Thu Feb 5, 2004 )


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