I think I'll opt for this one.Mine is 22110. ( 1.92TB )
Forgotten 2280 exist in 480GB and 960GB. Thanks for reminder.
Price is feasible for me.
The true question :
Cluster YES
HA YES
CEPHS ? (no to complexe to much ressources used)
ZFS with replicas (Surely YES)
LVM-THIN with rsync replicas with cron ?