heffneil Posted April 18, 2011 Share Posted April 18, 2011 I am thinking of clearing out my unraid server and starting over. I have a couple drives that are suspect for one reason or another... Anyway I wondered what might be the best way to start fresh? Preclear the drives and start over? What about within the unraid config as well? Should I just copy over a new config? Thanks! Neil Link to comment
kizer Posted April 18, 2011 Share Posted April 18, 2011 1) If your not concerned with any data you could just delete your shares within unRAID webmenu, follow up with looking at your data via command line to make sure the drives are completely emtpy. 2) From the system console or telnet type in 'initconfig' and confirm with 'Yes'. Which will force your Parity drive to loose its configuration and start over. Link to comment
heffneil Posted April 18, 2011 Author Share Posted April 18, 2011 I noticed most of my drives say: MBR: unaligned Which is weird because I had ear drives WITH the jumper. I want to do things the right way this time so I am not really sure how to proceed or even if this is a problem. I change the default now running 4.7 to MBR: 4K-aligned The drives are all ST32000542AS and WDC_WD20EARS. I found out I need to firmware upgrade most of the seagate drives so that should be interesting! Link to comment
Joe L. Posted April 18, 2011 Share Posted April 18, 2011 I noticed most of my drives say: MBR: unaligned Which is weird because I had ear drives WITH the jumper. I want to do things the right way this time so I am not really sure how to proceed or even if this is a problem. I change the default now running 4.7 to MBR: 4K-aligned The drives are all ST32000542AS and WDC_WD20EARS. I found out I need to firmware upgrade most of the seagate drives so that should be interesting! for EARS drive WITH a jumper you WANT "MBR: unaligned." Do not do ANYTHING. Link to comment
heffneil Posted April 18, 2011 Author Share Posted April 18, 2011 Thanks you are the man! Link to comment
heffneil Posted April 19, 2011 Author Share Posted April 19, 2011 Joe do you concur with the above posting to start fresh? I had one suspect drive I replaced and I need to replace one other and then start a new array. I am hoping I might be able to look at the old drive in another system and recoup data (perhaps) Neil Link to comment
lionelhutz Posted April 19, 2011 Share Posted April 19, 2011 I don't know why you wouldn't just stick in the 2 precleared drives to replace the ones with the data loss, type initconfig, answer Yes, let parity build and keep on going. It seems dumb to do the work copying the data back to those drives (4 of them?) that are still perfectly fine. Peter Link to comment
PeterB Posted April 19, 2011 Share Posted April 19, 2011 I am wondering what you hope to achieve by 'starting over'? If your only concern is two 'suspect' drives, then I would have thought that the best way to proceed is to replace one of them, then run a few preclear passes on the old drive. If it turns out to be good, then use it to replace your other suspect drive and then run preclears on the second suspect drive. Link to comment
heffneil Posted April 21, 2011 Author Share Posted April 21, 2011 Well I was syncing my two servers and in the processing of repairing the two drives I got everything back up and running but I am missing lots of data. Since a lot of it is reproducible (not all) I copy the stuff I don't have to the other unraid server and replace the two drives and start over. Resyncing from scratch. I am just worried about what gremlins might be in the works. I guess if I just re-calced parity thats the same as replacing the two suspect drives with blanks and clearing off the parity drive? Thoughts on that? Link to comment
heffneil Posted April 21, 2011 Author Share Posted April 21, 2011 The other issue I thought was a problem was what the MBR was unaligned. But apparently that isn't an issue with the ear drives but I have that with most of my seagate drives as well. I don't know if that is "normal" or expected as well... Link to comment
dgaschk Posted April 21, 2011 Share Posted April 21, 2011 If you use rsync it will only copy the differences between the two servers. EARS drives with a jumper should be UNaligned and EARS drives with NO jumper should be aligned. Link to comment
heffneil Posted April 22, 2011 Author Share Posted April 22, 2011 Right I got that about the unaligned now but what about my seagate drive? Model: ST32000542AS I am using the rsync to copy al the data that part I think is just ok. Link to comment
dgaschk Posted April 22, 2011 Share Posted April 22, 2011 Right I got that about the unaligned now but what about my seagate drive? Model: ST32000542AS I am using the rsync to copy al the data that part I think is just ok. Read this and you can decide: http://www.seagate.com/docs/pdf/whitepaper/mb6101_smartalign_technology_faq.pdf They recommend 4K-aligned but their tests show that it does not really matter with these drives. I would get everything set up and working. You can do the realignment procedure at your leisure if you decide. Link to comment
heffneil Posted April 22, 2011 Author Share Posted April 22, 2011 Ok I will read that probably next week. Is the realignment procedure not cause data to be lost? I guess replace the two drives, flash the other ST32000542AS because their firmware is a mess and then do what you said above about the parity or do you think I just verify parity? Curious.... Link to comment
dgaschk Posted April 22, 2011 Share Posted April 22, 2011 Do you mean this: 2) From the system console or telnet type in 'initconfig' and confirm with 'Yes'. Which will force your Parity drive to loose its configuration and start over. Link to comment
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