Oracle Database Appliance X6-2-HA, Deployment And User'S Manual

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Table C-2 (Cont.) Usable Disk Capacity on Oracle Database Appliance X6-2-HA
Description Sizing for X6-2-
HA with 10 SSD
Drives Sizing for
X6-2-HA with
20 SSD Drives Sizing for
X6-2-HA with
40 SSD Drives
RECO Disk Group Normal Redundancy, External Backup
(20% usable) 1.0TB 2.1TB 4.3TB
DATA Disk Group Normal Redundancy, Internal Backup
(40% Usable) 2.0TB 4.2TB 8.6TB
RECO Disk Group Normal Redundancy, Internal Backup
(60% usable) 2.9TB 6.3TB 12.9TB
Reserved Space High Redundancy 2.2TB 2.2TB 2.2TB
Total usable High (Triple Mirror) Oracle ASM Redundancy 2.9TB 6.6TB 13.9TB
DATA Disk Group High Redundancy, External
Backup(80% usable) 2.3TB 5.3TB 11.1TB
RECO Disk Group High Redundancy, External Backup
(20% usable) 0.6TB 1.3TB 2.8TB
DATA Disk Group High Redundancy, Internal
Backup(40% usable) 1.2TB 2.6TB 5.6TB
RECO Disk Group (10% usable) 1.7TB 4.0TB 8.3TB
The Reserved Space values represent the amount of storage required to maintain full
redundancy in case of disk failure.
The REDO disk group uses 800 GB raw Solid-State Drives or 0.8TB total usable
space. The REDO disk group uses high redundancy that provides approximately
0.3TB usable space for database redo logs.
Note:
For non-CDB databases, the REDO disk group has 50% free disk space.
For CDB databases, an Oracle ASM Cluster file system (ACFS) mount point
is created per CDB database, based on the template log file size. If this is a
Single Instance (SI) database, then multiply by 3. If the database is an
Oracle RAC database, then multiply by 4.
Oracle ASM Calculations
When Oracle ASM calculates Usable Free Space, it determines the amount of space
to reserve in the case of a disk failure. When you query Oracle ASM or Oracle
Database Appliance commands to view the amount of storage available, the
usable_File_MB
value may report a negative number.
Appendix C
Determining Usable Storage for Oracle Database Appliance X6-2-HA
C-5