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.

|   / o / /_  _                 email:  [EMAIL PROTECTED]
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