March 12, 20179 yr can anyone help me I'm very new unraid ( and scared of losing my Data ) I have about 15 HDD's In my machine with one parity drive I've just added a new 6 TB hard drive to it with about 12% of data on it that I would like to now remove and replace it with a 3TB hard drive and use the 6TB HDD as a second parity drive Is there a easy way of doing this Sent from my iPhone using Tapatalk Pro
March 12, 20179 yr 26 minutes ago, gavin_UK said: can anyone help me I'm very new unraid ( and scared of losing my Data ) I have about 15 HDD's In my machine with one parity drive I've just added a new 6 TB hard drive to it with about 12% of data on it that I would like to now remove and replace it with a 3TB hard drive and use the 6TB HDD as a second parity drive Is there a easy way of doing this Sent from my iPhone using Tapatalk Pro No - there is not an easy and safe way. Once a drive becomes a data drive, removing it or replacing it with a smaller drive is a little tricky. There are a couple of strategies ... 1 - You can add the new 3T drive to the array, copy the data from the 6T to the 3T, and then do a new config (loosing parity protection), and then rebuild parity. (Smart to do a parity check just before losing protection, minimizing risk of the parity build). 2 - You can add the 3T drive and copy the data (same as above), and then fill the 6T drive with binary zeros, deleting everything from it in the process. Filled with zeros, the disk is "invisible" to parity. You can then do a new confiig, excluding the 6T drive, and trust parity. So you never loose parity protection. The command to zero the drive is very dangerous and if you get it wrong you can overwrite the wrong disk. But besides that risk, with is a pretty good option. There are a couple of variations, but these are the basic options. BTW. enable turbo write if you are copying that much data. It will go quicker.
March 12, 20179 yr Author How would I copy data from the 6T to the 3TAlso thanks for replying Sent from my iPhone using Tapatalk Pro
March 12, 20179 yr If the 3T drive is mounted in the array, let's say as disk10, and the 6T drive is disk9, you could run this command either from the unRAID server itself, or using a "screen" session. A normal SSH session will timeout and stop a copy in progress. rsync -avPX /mnt/disk9/ /mnt/disk10/ This technique verifies the checksum as it goes, giving extra confidence that the copy worked properly.
March 12, 20179 yr Author Is it possible to copy the data to any drive just as long there is space or does it have to be a empty hddSent from my iPhone using Tapatalk Pro
March 12, 20179 yr Community Expert 1 hour ago, gavin_UK said: Is it possible to copy the data to any drive just as long there is space or does it have to be a empty hdd Sent from my iPhone using Tapatalk Pro Any
March 13, 20179 yr Author Ok this is my drive list I have no clue how to remove the 6 TB drive after by doing a new config Do I just make sure each drive is in the same order apart from the last drive disk 14 Once again so sorry if this is silly but I'm paranoid about losing data At the moment I'm coping about 600gb to disk 13 a 4tb drive which has over 2TB free Sent from my iPhone using Tapatalk Pro
March 13, 20179 yr Community Expert New Config will let you assign your disks however you want. In your case, you want to remove a disk. When starting after New Config, it will normally rebuild the parity drive, and you should let it.
March 13, 20179 yr Author What's the command to zero the 6 T drive pleaseSent from my iPhone using Tapatalk Pro
March 13, 20179 yr Community Expert https://lime-technology.com/wiki/index.php/Shrink_array#The_.22Clear_Drive_Then_Remove_Drive.22_Method
March 13, 20179 yr Author Can I just ask do I check Parity and data or just dataSent from my iPhone using Tapatalk Pro
March 13, 20179 yr Community Expert 7 minutes ago, gavin_UK said: Sent from my iPhone using Tapatalk Pro Whatever you check will be already filled in for you, but you still have an opportunity to change any part of it, so you could just check All
March 13, 20179 yr Author I checked all deleted disk 14 from the array now it say disk 14 is emulated Sent from my iPhone using Tapatalk Pro
March 13, 20179 yr Community Expert When you New Config, before you start the array you need to make any changes you want to your disk assignments. For example, setting disk14 to unassigned.
March 13, 20179 yr Author Thank you all for your help guys you make a newbie welcome [emoji1303]Sent from my iPhone using Tapatalk Pro
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