Tuesday Sessions, Sep 30
Oracle Zero Data Loss Recovery Appliance: Donna Cooksey & Jony Safi
- Name shortened to Recovery Appliance, supports databases from 10.2 and above and also supports tape
- Supports RMan Delta Push, using incremental forever.
- Works the same as dataguard
- The Delta Store automatically compresses the data and provides point in time recovery
- Supports copy to tape and remote replicas.
- The appliance is configured to provide a point in time recovery objective. Example is 6 days.
- A major benefit of this appliance is the unprotected data window, can be as low as 5 ms
- ZDLRA is based on X4 high capacity storage nodes, the same as in Exadata.
- Base rack has 3 storage nodes.
- The backup appliance also has 2 compute nodes where the RMan catalogue lives and the OSB libraries.
- Fully integrated with Enterprise Manager 12c through a new plugin
- Configured with 2 disk groups
- The catalogue is triple mirrored
- The backups are double mirrored
- The ZDLRA stores the database backups and the archived log files.
- RMan compression is no longer required as the appliance automatically compresses all datafiles that it receives
- Utilises incremental forever backups.
- Recommended to backup over 10Gb, but IB is also supported which runs at 80Gb
- Usable Delta Space, per rack, is 224 TB
- Up to 120 TB/hour backup rate
- Up to 12 TB/hour restore rate
- When protecting multiple databases on a single ZDLRA the databases need to be first grouped by Business SLAs.
- These groups are called database tiers and the protection policy is assigned to the tier and therefore every database within the tier gets that level of protection.
- If the backup appliance runs out of space you get the choice of either
- Delete the oldest backup so that you can accept the new backup
- Fail the new backup and protect the oldest backup.
- These are both policy based options