On 03/02/2011 14:37, Roberto Spadim wrote:
hi guys, i another thread i read about SNIA DDF Technical Position v2.0 could we implement RAID-1E, for sequencial/random read speedup? http://www.snia.org/tech_activities/standards/curr_standards/ddf/SNIA_DDF_Technical_Position_v2.0.pdf after that, could we implement some tweaks on read balance (there's another thread just for it)
Those RAID-1E layouts look to me like what's implemented in md RAID as RAID-10 with near and offset layouts.
As discussed frequently here, md RAID-10 also has a far layout which can provide slightly faster than RAID-0 throughput for sequential reading with slightly slower than RAID-1 throughput for sequential writing. Please see some of the benchmarks that have also been referred to on this list in the last couple of days.
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