It is a specific technology, but not a specific hardware technology. RAID is a technology that uses multiple hard drives for performance, data management or reliability. You don't need a RAID card to make RAID. And it seems to me in google's case instead of using multiple hard drives in one server/box, they are using a server/box as if it were a drive and using multiple boxes to denote the (for lack of a better word) RAID. Mirroring whole machines rather then just HD's. What would you call this? It seems to me it's still multiple hard drives being used for performance, data management and reliability. RAID on steroids...if not in fact, but at least in practical terminology.
Mike On Sat, Aug 16, 2008 at 7:19 AM, John DeCarlo <[EMAIL PROTECTED]> wrote: > On Fri, Aug 15, 2008 at 5:14 PM, mike <[EMAIL PROTECTED]> wrote: > > > This part..maybe your terminology is confused..you say they get more > > realiability with 'redundant disk arrays then with RAID'. Just a point > of > > order, RAID *is* redundant array of independant disks. > > > > But RAID is a specific technology. Having multiple, redundant drives does > not require using RAID. My understanding is that Google doesn't use RAID > technology for anything but that one project (Adwords). While for their > search indices and Gmail and the like they simply store multiple copies of > the data. Then if one fails, the other copies are still there. > > > -- > John DeCarlo, My Views Are My Own > > > ************************************************************************* > ** List info, subscription management, list rules, archives, privacy ** > ** policy, calmness, a member map, and more at http://www.cguys.org/ ** > ************************************************************************* > ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************
