April 1, 20242 yr Hi, I have the following : Parity is 18tb Disk 1 16tb Disk 2 18tb Disk 3 10tb Disk 4 16tb I was starting to get low on space, so I activated one of my old 10tb drives. It was sitting there doing nothing and it still worked. My disks are mirrored so obviously whatever I add I lose half. It wiped the disk, and then I formatted it, and it added it to the pool. The problem is, it added the full 10tb, it should have only added 5tb. It's also not showing a file system for the disk I added. I'm assuming with the new changes to Unraid I must have done something wrong? Never had this problem before. Another question, how many disks should you have before using a second parity disk? I was going to setup a second set of disks for backups, but I just have too much data. I'm just going to have to take my chances. I try not to let my disks get too old. Any help is appreciated.
April 1, 20242 yr Community Expert 3 minutes ago, Badboy said: My disks are mirrored so obviously whatever I add I lose half. Not sure what you mean, parity doesn't work with mirrors, every disk you add will use the full capacity.
April 1, 20242 yr Author Sorry, mirrored was the wrong word. They are in raid mode. Each one only uses half its capacity. Up unit this last one added. Didn't add it that way.
April 1, 20242 yr Community Expert 10 minutes ago, Badboy said: Each one only uses half its capacity Still don't understand what you mean, each array device uses the full capacity of the drive as an independent filesystem, please post the diagnostics and identify which drive you think is the problem.
April 1, 20242 yr Author The pool is set in raid mode. If I add 50tb of space, I'm only going to have 25tb available. That is the way mine is working. Up until now, when I added 10tb and it gave me the whole thing. I only had 5tb left, it should have been 10tb when I added the disk., but it's showing 15tb. Can't post anything at the moment.
April 1, 20242 yr Author Disk #5 is showing all it's space is available, when only half of it should be.
April 1, 20242 yr Community Expert 1 hour ago, Badboy said: Disk #5 is showing all it's space is available, when only half of it should be. And that is correct, a new added array disk will always have its full capacity available.
April 1, 20242 yr Community Expert 4 hours ago, Badboy said: The pool is set in raid mode. If I add 50tb of space, I'm only going to have 25tb available. That is the way mine is working. Up until now, when I added 10tb and it gave me the whole thing. I only had 5tb left, it should have been 10tb when I added the disk., but it's showing 15tb. Can't post anything at the moment. All the screen shots you posted refer to the main Unraid array - not to a pool and the main array only uses the Unraid proprietary variant of RAID. In the main Unraid array the available space is the sum of the data drives.
April 1, 20242 yr Author 1 hour ago, JorgeB said: And that is correct, a new added array disk will always have its full capacity available. Stupid me I guess, never noticed the array was using the full amounts. How many disks should you have before considering a second parity drive? Thanks.
April 1, 20242 yr 1 hour ago, Badboy said: How many disks should you have before considering a second parity drive?
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