Database Administration & Monitoring, Database management, Hardware & Storage, Oracle Disk usage on ODA – Free MB and usable MB 21.10.2020 by Jérôme Dubar Introduction Oracle Database Appliances rely on ASM to manage disk redundancy. And ASM is brilliant. Compared to RAID, redundancy is managed at the block level. For NORMAL redundancy, which is similar to RAID1, you need at least 2 disks, but(…)