bill_in_socal Posted December 24, 2010 Share Posted December 24, 2010 I just purchased (5) new WD 2-TB drives (WD20EARS-00MVWB0). My parity drive is a Hitachi 2-TB drive. I have begun replacing my existing (5) 640 Gig drives with the 2-TB WD drives - all the same model number (above). However, two of the drives cause unRAID to report: "Stopped. Disk in parity slot is not biggest." The drives look like they're reporting about 1,500 more bytes than the parity drive. All of the drives went through a "preclear_disk" and all (5) have jumper 7-8 installed. Does anyone know what is going on here, and how to resolve it? Quote Link to comment
graywolf Posted December 24, 2010 Share Posted December 24, 2010 Sounds like it might be HPA (search the forums on it) that is causing you problems. Quote Link to comment
Joe L. Posted December 24, 2010 Share Posted December 24, 2010 I just purchased (5) new WD 2-TB drives (WD20EARS-00MVWB0). My parity drive is a Hitachi 2-TB drive. I have begun replacing my existing (5) 640 Gig drives with the 2-TB WD drives - all the same model number (above). However, two of the drives cause unRAID to report: "Stopped. Disk in parity slot is not biggest." The drives look like they're reporting about 1,500 more bytes than the parity drive. All of the drives went through a "preclear_disk" and all (5) have jumper 7-8 installed. Does anyone know what is going on here, and how to resolve it? Yes, we do... Do yo by chance have a Gigabyte motherboard? (or used the 2TB drive on a Gigabyte motherboard?) Check out these entries in the wiki and learn about HPA (host-protected-area) http://lime-technology.com/wiki/index.php?title=UnRAID_Topical_Index#HPA and specifically: http://lime-technology.com/forum/index.php?topic=4194 and here: http://lime-technology.com/forum/index.php?topic=3894.msg34327#msg34327 Joe L. Quote Link to comment
bill_in_socal Posted December 24, 2010 Author Share Posted December 24, 2010 Thanks guys - looks like I have a lot of reading to do... The motherboard is an MSI P4 Neo3 unRAID version 4.4.2 Quote Link to comment
Joe L. Posted December 24, 2010 Share Posted December 24, 2010 Thanks guys - looks like I have a lot of reading to do... The motherboard is an MSI P4 Neo3 unRAID version 4.4.2 Was the drive connected to a Gigabyte motherboard? even if only for a moment? Joe L. Quote Link to comment
bill_in_socal Posted December 24, 2010 Author Share Posted December 24, 2010 Now that you mention it Joe..... I used another system to preclear the disks. And it surely was a Gigabyte motherboard! Can I just go back and "re-preclear" the two offending disks on a non-Gigabyte motherboard system? This is a friends unRAID box with just too much data to back up. I'm not a Linux guy and frankly a little worried at this point. I really don't want to screw up. Quote Link to comment
Joe L. Posted December 24, 2010 Share Posted December 24, 2010 Now that you mention it Joe..... I used another system to preclear the disks. And it surely was a Gigabyte motherboard! Can I just go back and "re-preclear" the two offending disks on a non-Gigabyte motherboard system? This is a friends unRAID box with just too much data to back up. I'm not a Linux guy and frankly a little worried at this point. I really don't want to screw up. No, you cannot "just" do that. You must first reset the host-protected area. Otherwise, the pre-clear will only see the artificially smaller size of the drive. It will then set the partition size based on what it thinks is the "full" size available. You should be able to use the hdparm -N command to see the native size and then again to reset the HPA to the full size of the drive. Since you are planning to use the drive as the parity drive you really don't need a pre-clear signature on the drive, you just need to have it report its true size. This post gives the basics: http://lime-technology.com/forum/index.php?topic=4194.msg37010#msg37010 Joe L. Quote Link to comment
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