On 12/27/05, Marco Peereboom <[EMAIL PROTECTED]> wrote:
>
> Strip a single RAID 5 set across channels to speed up the SCSI
> backend.  Then slice it up using disklabel.  That should do the trick.


My problem is that the 2 OS drives are 160GB, whereas my attempt at a poor
man's raid5 are 4x250GB.

One thing I noticed.  copying 240G worth of crap from a 250GB drive, across
the motherboard's IDE interface, into the megaraid i4 raid0 (160GB on
channel 0, 160GB on channel 1) took 2 hours.

Copying from the above raid0 onto the 4x250GB raid5 (2 drives on channels 2
and 3) took 13+ hours.  Does raid5 really use up that much cpu?  I couldn't
have saturated the PCI bus or the individual ide channels, could I?

-Tai

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