Is RAID Dead ?
The Redundant Array of Inexpensive Disks or RAID has been a part of the IT vernacular for nearly 30 years. The goal was simple - to increase performance, reliability, availability or capacity by combining multiple physical disks. From RAID-0 and 1 through RAID 4, 5 or 6 and combinations like RAID 10 or 0+1 you can provide any of the aforementioned capabilities to your application. First introduced way back in 1987, most early RAID implementations were done in software - especially on Unix. This was typically applied to Just a Bunch of Disks or JBOD. One of the early ISVs in that space was Veritas with their VFS file system and eventually what became Storage Foundations. But one argument for some time was why would I want to take away CPU cycles from my application to manage the RAID work. Eventually RAID capability was transformed into hardware via ASICs into what we commonly call today as a RAID Controller. They took over all of the block m...