EODetroit Posted June 8, 2005 Posted June 8, 2005 I read somewhere on some forums that you shouldn't put NCQ drives in a raid because if you do, you'll have data corruption problems. Any truth to this, or is this another one of those "things" you hear on the internet that is nothing but bull? Reason I ask is I'm having some Machine Check Exception (an error which normally indicates an "unrecoverable hardware error") problem after I re-installed WinXP x64 on my new pair of Seagate Barracuda 7200.8s. The first time I installed x64 this happened right after I plugged in a smart card reader into a USB header on the motherboard. I of course removed the smart card reader but the problem didn't go away. If I booted into safe mode, I was fine. If I booted into safe mode with network support, it crashed. So I reinstalled again and then everything was almost fine. I haven't put the smart card reader back yet, and figured that was the cause. After I re-installed, I couldn't get the non-NForce network port to work. At first the computer would crash if I tried to use it, but now it simply doesn't recognise a cable plugged into it. I plug the same cable into the NForce network port and it works fine. I was ok with this situation until last night my computer BSODed a couple times in a row with Machine Check Exception, again. I finally got it to boot before heading off to work this morning. The first thing I'd like to do is make sure I'm not fundamentally screwed up by raiding those 7200.8s. Quote Share this post Link to post Share on other sites More sharing options...
EODetroit Posted June 9, 2005 Posted June 9, 2005 /bump No one has heard of this and no one runs two NCQ hard drives in a raid successfully? My computer when I got from work yesterday was totally screwed over, looks like I'll have to try re-installing again . Quote Share this post Link to post Share on other sites More sharing options...
DeepBlue Posted June 9, 2005 Posted June 9, 2005 didn't read about problemas but I wouldn't use it, as NCQ is an internal drive's controller optimization that executes transfers out of order to optimize the transfer requests, and so I wouldn't trust that every disk in the RAID is doing exactly the same internal optimization pattern than the other one. This supposedly shouldn't happen as both drives get the request in parallel (supposing 100% hardware RAID 0, if it's done by the driver then it's not parallel) and the blocks are equally, but I wouldn't count on that. I'll look for more info just to be sure, though Quote Share this post Link to post Share on other sites More sharing options...
BLJ Posted June 9, 2005 Posted June 9, 2005 didn't read about problemas but I wouldn't use it, as NCQ is an internal drive's controller optimization that executes transfers out of order to optimize the transfer requests, and so I wouldn't trust that every disk in the RAID is doing exactly the same internal optimization pattern than the other one. This supposedly shouldn't happen as both drives get the request in parallel (supposing 100% hardware RAID 0, if it's done by the driver then it's not parallel) and the blocks are equally, but I wouldn't count on that. I'll look for more info just to be sure, though I'm using NCQ and Raid0 with 3 HDD's on DFI NF4 Ultra-D. Works just fine - besides that the performance is a little to low (30MB/s?)... -> that's an issue with SATA 1/2 Settings... cya Quote Share this post Link to post Share on other sites More sharing options...
Guest Dangermouse Posted June 9, 2005 Posted June 9, 2005 Ditto, I've got three Hitachi 80GB SATA2 drives, all striped together, all with NCQ (part of SATA2 spec), and no issues. Also, NCQ is something that came from the SCSI world (not sure about the name, but the technology for sure), and those have been RAIDed for decades, never heard about a problem there. Quote Share this post Link to post Share on other sites More sharing options...
Ambian Posted October 20, 2005 Posted October 20, 2005 Same here. I have two 250gb Seagates with NCQ in Raid0. No problems at all. My machine is constantly downloading so there is always a large amount of data being written/read, and then deleted. Average Transfer: 95MB/s Quote Share this post Link to post Share on other sites More sharing options...
Angry_Games Posted October 20, 2005 Posted October 20, 2005 ive tested 1, 2, 3, and 4 SATA II NCQ drives in RAID of all combinations on both the NV and Si3114 controller...no problems. Quote Share this post Link to post Share on other sites More sharing options...
Skulldor Posted October 20, 2005 Posted October 20, 2005 No hard drive issues in the three months I have had my system. HD Tach: Average read 105.4 MB/s Burst speed 236.4 MB/s CPU utilization 7% Random Access Time ~15 ms Quote Share this post Link to post Share on other sites More sharing options...
Guest Flip Posted October 22, 2005 Posted October 22, 2005 Does NCQ turn off when you raid HDDs? Quote Share this post Link to post Share on other sites More sharing options...
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