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Forum Discussion
RN214, query on a 2nd vertical expansion
Hello Forum Simply query, just checking. Can I carry out a “vertical expansion” more than once? I have a RN214 ( 6.10.3, X-RAID) which already went from 4x 4TB to 4x8TB, and I am just about t...
If I remember well, OS6 will create another RAID for the “expanded portion” of the disks. This is “unseen” in the normal use, but it can be seen in the volume log, which now has RAID 0 and RAID 1 which contain md0 and md1 respectively.
Almost.
md0 is the OS volume (4 GB total), and that is mirrored on every disk with RAID-1. md1 is a small swap partition.
The data RAID groups start with md127 and count downwards. They are concatenated into one volume by BTRFS.
Since you've expanded once already, you should see both md126 and md127 in btrfs.log and mdstat.log. Volume.log should only show md127 (down in the df -i and df -h sections).
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