Re: poor sata performance on 2.6

Jeff Garzik
2004-04-19T16:56:55Z

Henrik Gustafsson wrote:
> [cut]
>
>> I _really_ like the SX4 -- it gives the programmer full control over
>> all aspects of RAID operation, while providing useful hardware
>> acceleration where it's needed. And not getting in the way of the
>> programmer, when it's not needed.
>
>
> Does this mean that the hardware-accelerated RAID5-mode will be
> compatible with soft-RAID5? So that I am able to create a RAID5-array
> today and get all the goodies from hardware-support later without having
> to do the backup - recreate-array - restore dance?

Who knows. It depends on the XOR algorithm block size and such. I
_think_ XOR'ing is compatible, but have not tested to verify that assertion.

Jeff