Hi all,
I have the following setup on a backup server I have not looked into for a while:
2 x 4TB
2 x 2TB
13 x 1TB
currently in raidz2 giving me 11TB usable (I did not notice till now but it does not look like the 25TB of capacity going down to 11TB makes a lot of sense).
Can somebody confirm how I end up with 11TB of usable space or in other words, how is the parity calculated with disks of different sizes?
As I have added 2 x 8TB to the system, I am now looking at how to maximize the usable space in either raidz1 or raidz2 and would welcome recommendation on doing so. I can wipe the system that is no issue.
Current pool:
And the drives in the system, note: ada4 and ada10 are the new 8TB.
I have the following setup on a backup server I have not looked into for a while:
2 x 4TB
2 x 2TB
13 x 1TB
currently in raidz2 giving me 11TB usable (I did not notice till now but it does not look like the 25TB of capacity going down to 11TB makes a lot of sense).
Can somebody confirm how I end up with 11TB of usable space or in other words, how is the parity calculated with disks of different sizes?
As I have added 2 x 8TB to the system, I am now looking at how to maximize the usable space in either raidz1 or raidz2 and would welcome recommendation on doing so. I can wipe the system that is no issue.
Current pool:
Code:
pool: zstuff
state: ONLINE
scan: scrub repaired 0 in 7h35m with 0 errors on Tue Mar 31 08:00:00 2015
config:
NAME STATE READ WRITE CKSUM
zstuff ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
ada0p1 ONLINE 0 0 0
ada1p1 ONLINE 0 0 0
ada2p1 ONLINE 0 0 0
ada3p1 ONLINE 0 0 0
ada5p1 ONLINE 0 0 0
ada7p1 ONLINE 0 0 0
ada8p1 ONLINE 0 0 0
ada9p1 ONLINE 0 0 0
ada11p1 ONLINE 0 0 0
ada12p1 ONLINE 0 0 0
ada13p1 ONLINE 0 0 0
ada14p1 ONLINE 0 0 0
ada15p1 ONLINE 0 0 0
ada16p1 ONLINE 0 0 0
ada18p1 ONLINE 0 0 0
And the drives in the system, note: ada4 and ada10 are the new 8TB.
Code:
ada0: 3815447MB (7814037168 512 byte sectors)
ada1: 3815447MB (7814037168 512 byte sectors)
ada2: 953869MB (1953525168 512 byte sectors)
ada3: 953869MB (1953525168 512 byte sectors)
ada4: 7630885MB (15628053168 512 byte sectors)
ada5: 953869MB (1953525168 512 byte sectors)
ada6: 953869MB (1953525168 512 byte sectors)
ada7: 953869MB (1953525168 512 byte sectors)
ada8: 2861588MB (5860533168 512 byte sectors)
ada9: 953869MB (1953525168 512 byte sectors)
ada10: 7630885MB (15628053168 512 byte sectors)
ada11: 953869MB (1953525168 512 byte sectors)
ada12: 953869MB (1953525168 512 byte sectors)
ada13: 953869MB (1953525168 512 byte sectors)
ada14: 953869MB (1953525168 512 byte sectors)
ada15: 953869MB (1953525168 512 byte sectors)
ada16: 953869MB (1953525168 512 byte sectors)
ada17: 953869MB (1953525168 512 byte sectors)
ada18: 2861588MB (5860533168 512 byte sectors)
ada19: 57231MB (117210240 512 byte sectors)