On Mon, Jan 02, 2012 at 09:12:44AM -0500, Edward Ned Harvey spake thusly: > If it's in BIOS, then it's hardware. Below the OS, regardless of what OS > you're talking about. Right? Or is there some new BIOS-vs-software > standard I'm not aware of?
BIOS is software stored in memory mapped into the system's memory which is loaded into the CPU and executed. And that "hardware" RAID card? It contains memory. Which contains software. Which is loaded into a CPU (which happens to be much slower than your primary cpu with something like an 800Mhz PPC being typical) and executed. I've never understood the big deal about hardware RAID. Especially not while the vast majority of your primary CPU's time is most likely spent idling. More hardware to fail, expensive hardware to buy, incompatible on disk formats making RAID card failure very difficult, special drivers needed, differing commands and management tools needed for each RAID card... I stick with software RAID wherever possible. -- Tracy Reed http://tracyreed.org Digital signature attached for your safety.
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