mlapaglia Posted December 31, 2019 Share Posted December 31, 2019 I currently have a single 240GB cache drive. I want to replace it with two 512GB ones. Can I simply add one of the new 512GB drives to the cache pool, wait for it to balance, then replace the 240GB with the second 512GB and balance it again? Quote Link to comment
JorgeB Posted December 31, 2019 Share Posted December 31, 2019 Yes, if current cache is btrfs. Quote Link to comment
mlapaglia Posted December 31, 2019 Author Share Posted December 31, 2019 When I added the cache drive it's showing up as 677GB instead of 240GB? Isn't this supposed to default to RAID1 (240GB because of the smaller drive)? Quote Link to comment
itimpi Posted December 31, 2019 Share Posted December 31, 2019 This is a known ‘bug’ in the way BTRFS reports free space on the case of mismatched drive sizes. You are correct in that the usable space with 2 mismatched drives is the size of the smaller drive. Quote Link to comment
JorgeB Posted December 31, 2019 Share Posted December 31, 2019 https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=480420 Quote Link to comment
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