Nasha Posted May 16, 2017 Share Posted May 16, 2017 (edited) Hi all, Q1. Just wondering how unRAID handles an odd number of cache drives in its cache pool, as i understand it operates in a RAID1 config? Currently i have 2x 128gb cache drives, and i have a spare 240GB drive kicking around that i'd like to add to the pool. Q2. My end game is to have additional SSD space that i can run a few IO intensive VM's on, whilst keeping redundancy. If the cache pool can extend to 3 drives, then it will reside here. Otherwise i suppose i add the disk to my array, and create a share dedicated to that disk, and exclude it from all other shares? Cheers, Nasha Edited May 16, 2017 by Nasha Quote Link to comment
JorgeB Posted May 16, 2017 Share Posted May 16, 2017 http://carfax.org.uk/btrfs-usage/ Quote Link to comment
Nasha Posted May 16, 2017 Author Share Posted May 16, 2017 3 hours ago, johnnie.black said: http://carfax.org.uk/btrfs-usage/ Thanks, this is good news. I was under the impression that cache pools were locked to RAID-1 configuration Quote Link to comment
itimpi Posted May 16, 2017 Share Posted May 16, 2017 21 minutes ago, Nasha said: Thanks, this is good news. I was under the impression that cache pools were locked to RAID-1 configuration This is not true RAID-1 where you end up with drives mirrored. It is a BTRFS specific implementation which simply ensures that all data resides on at least 2 different drives so that recovery is possible after a drive failure. 1 Quote Link to comment
Nasha Posted May 16, 2017 Author Share Posted May 16, 2017 11 minutes ago, itimpi said: This is not true RAID-1 where you end up with drives mirrored. It is a BTRFS specific implementation which simply ensures that all data resides on at least 2 different drives so that recovery is possible after a drive failure. Thanks for the clarification Quote Link to comment
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