> note that the 'performance' in many cases is a myth, > for several reasons, mainly because: > > - hardware raid has 2-256MB cache, software has 1-4GB > - hardware raid has a single channel to the host, > while proper setup soft raid can burst over N channels > simultaniously (and will do so, e.g. for separate I/O > threads) > - elevator in the kernel, vs limited TCQ I believe you are talking about simple SATA controllers, not real hardware raid setups?
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