March 1, 201412 yr Agreed trurl .... best practice all round. I'd appreciate to know when parity completes ok and larger drive is successfully parity written (and, as important, successfuly checked). Dont think i was misunderstanding the op's 'fix' at all, agreed? Unraid handles a larger disc without issue as long as the correct procedures, as outlined in the FAQ, are followed. Pretty simples really!
March 1, 201412 yr Unraid handles a larger disc without issue as long as the correct procedures, as outlined in the FAQ, are followed. Pretty simples really!That assumes a STOCK install of unraid. There are some add ons that break unraids ability to setup and partition large disks. It really sounds like this is the OP's issue, which I tried to address with an earlier post.
March 1, 201412 yr Unraid handles a larger disc without issue as long as the correct procedures, as outlined in the FAQ, are followed. Pretty simples really!That assumes a STOCK install of unraid. There are some add ons that break unraids ability to setup and partition large disks. It really sounds like this is the OP's issue, which I tried to address with an earlier post. Haven't seen any post which indicates that OP had removed anything. What makes you think he has an 'unstock' install?
March 1, 201412 yr Author No, it is a vanilla install, so there was nothing to remove. My other complication in the run up to all this is that I have a HP microserver and all my slots are being used, hence why I needed to swap out the parity. In regards to consulting the FAQ, I did. It has a link to a forum post (http://lime-technology.com/forum/index.php?topic=2280.0) which states Hi All, I've a system with 6x 750 GB and 3x 500 GB drives; just received new 1 TB drive I would like to use as the parity drive. I think I understand the steps to replace the 750 GB parity with the new 1TB parity drive, but hoping for someone to tell me the following steps are correct. 1 - Ran parity check last night, no errors. This step not really required, but a sanity issue 2 - stop the array 3 - go to devices tab, remove parity drive from configuration 4 - power down system via "powerdown" button 5 - remove existing 750 GB parity drive, replace with new 1 TB drive 6 - power on unraid 7 - go to devices tab, assign 1TB drive as parity drive 8 - start the array with the "start" button 9 - wait for parity rebuild to complete 10 - power off array and system 11 - install 750 GB drive removed in step 5 12 - power on machine, start the array 13 - go to devices tab, add the new/old 750 GB as a data disk 14 - start the array - disk will be formatted and added to the array. I was stuck at point 8, the array would not start with the new disk. Once it had been put in a windows machine, voila, the array will start.
March 1, 201412 yr Well now ... that all seems in order EXCEPT that it doesn't mention that it is best practice to preclear, not needed for parity itself, in order to ensure the drive itself is ' fit and able '. I have a setup similar to yours and i'm currently preclearing a 4TB drive which will be swapped in for the existing smaller parity drive once it has all finished and i'm happy with the results. I don't expect to have any problems similar to the ones you seem to have experienced. I'll keep you informed ... check back late tomorrow Have you checked your parity yet
March 1, 201412 yr And ... just reread you previous post. If all of your microserver slots are allocated how are you going to expand your array? Are you going to rebuild each one, i assume 4TB drives, from parity each time? That's quite a daunting job if you factor in the preclear time as well. My Seagate NAS 4TB drive took 36hours to run just one cycle on my 54L microserver. It's presently sitting at 48+ and is now in post-read on the second cycle. I dont expect it to finish late tomorrow evening after completing 3 cycles. I have further drives arriving at 3 day intervals next week. Should be all sized up by end of next week
March 1, 201412 yr 8%, it's like watching paint dry! Don't watch it Shame you havent got facilities to preclear the remaining discs in advance .... it's called 'multitasking' ;) What HP server have you got?
March 1, 201412 yr Author Good advice! The temptation to keep going back to the webgui is too strong though! I've got the N54. Tidy little thing, going to 4TB a drive will take me to 16TB with a potential of 20TB if I use the eSATA connector. I'm in no rush to be honest. I guess I could take the array off line and put all 4 in at once for a preclear after I complete the parity. I can live without the box for a few days. Then swap one at a time after that. It should be ready by the summer!
March 1, 201412 yr I guess I could take the array off line and put all 4 in at once for a preclear after I complete the parity. This sounds like a good plan. You should install unRAID and the preclear script to another flash drive and put your "real" one aside. You won't need a license key since you won't have any array drives. Since you're on 5.0.5 unRAID will remember your original drives when you put them back and boot up with your "real" flash drive. You could also use an eSATA enclosure or dock ("toaster") since you have an eSATA port. I usually do my preclears this way.
March 1, 201412 yr If you want to do all of them at once you should remove all of your other drives. Don't want to preclear one of them by mistake.
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