[Klug-general] Software Vs Hardware Raid

[J D Freeman]

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On Thu, Jul 03, 2008 at 03:30:57PM +0100, Peter Frost wrote:
>
>  + Not tied to a single brand of RAID controller (you can replace your  
> SATA controller/motherboard with a different one, put the array into  
> another machine, etc.); my understanding is that with hardware RAID you  
> generally have to stick to one chipset or set of chipsets, otherwise  
> your array will stop working. I have always used software RAID though so  
> I may be mistaken.

Its worse than that, you can even be tied to a certain model, and
version of raid board. This is due to the RAID controller writing meta
data on the disk, which is unique to the board. Thus if you change RAID
controller, you lose your data (effectively).

These days linux software raid is your best option.

J
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