nka Posted January 14, 2020 Share Posted January 14, 2020 (edited) Hello, I've tried to search arounds but can't find clear informations. I currently got 2 x 480GB in my Cache pool. I got 480GB available. According to "btrfs fi df /mnt/cache" it's in "RAID1". According to https://carfax.org.uk/btrfs-usage/ , 2 x 480GB RAID1 give 480GB of usable space. Now, can I add another 480GB drive ? If yes, Am-I right to thing I will have 720GB of available cache ? If yes, will there be any performance lost ? I mean, if I had 3 x 480GB versus 2 x 360GB (I know they don't exist) for the same amount of space ? Thanks a lot! Edited January 14, 2020 by nka Quote Link to comment
JorgeB Posted January 14, 2020 Share Posted January 14, 2020 6 minutes ago, nka said: Now, can I add another 480GB drive ? If yes, Am-I right to thing I will have 720GB of available cache ? Yes. 6 minutes ago, nka said: If yes, will there be any performance lost ? I mean, if I had 3 x 480GB versus 2 x 360GB (I know they don't exist) for the same amount of space ? There won't be a performance loss compared to current config, 2 x 360GB would need to be used in raid0 to have the same capacity, and raid0 would be faster, but without redundancy. Quote Link to comment
nka Posted January 14, 2020 Author Share Posted January 14, 2020 My bad... I mean 2 x 720GB. But you answed my questions, thanks! Quote Link to comment
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