On Mon, Dec 10, 2001 at 10:13:20AM -0800, Matthew Dillon wrote:
> :Spindle sync is an anachronism these days; asynchronous behaviour
> :(write-behind in particular) is all the rage. You'd be hard-pressed to
> :find drives that even support it anymore.
>
> Woa! Say what? I think you are totally incorrect here Mike.
> Spindle sync is not an anachronism. You can't get good RAID{0,2,3,4,5}
For RAID3 that is true. For the other ones...
> performance without it - for reading OR writing. It doesn't matter
> so much for RAID{1,10}, but it matters a whole lot for something like
> RAID-5 where the difference between a spindle-synced read or write
> and a non-spindle-synched read or write can be upwards of 35%.
If you have RAID5 with I/O sizes that result in full-stripe operations.
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