Messages in this thread | | | Date | Fri, 15 Mar 2002 17:12:03 -0800 | From | Mike Fedyk <> | Subject | Re: HPT370 RAID-1 or Software RAID-1, what's "best"? |
| |
On Fri, Mar 15, 2002 at 05:43:38PM +0000, Alan Cox wrote: > > Hardware RAID is indeed better, but what you get using HPT370 IDE > > controlelr is not hardware raid at all. Just read the code of the driver. > > You get a software raid, period. > > Its not always that simple either. > > Software raid on aic7xxx totally blows away the Dell/AMI megaraid card I > have, to the point the megaraid now resides in my testing bucket. The promise > Supertrak 100 (now superceded by the SX6000) is also slower than the > software IDE raid, but does use less CPU in RAID5 mode. > > Some hardware raid cards do seem to be winners. The Dell Perc2/QC aacraid > based boards (233Mhz ARM etc) really shift. When I've had the chance to > borrow the disks to test I've seen it running over 100Mbytes/second. It > also supports nice stuff like online reconfiguration of active volumes. > [$$stupid from Dell $$notalot from ebay ;)]
Yep, but the aacraid controllers based on i960 don't do so well. I was able to double my throughput after switching to software raid (it acts like an aic7xxx in scsi mode, even using the adaptec driver instead of aacraid).
Mike - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |