RTO in Exadata

I have a few questions on OTN, please help.

  • for the 2 TB database, what is the objective of minimum possible recovery (RTO) for the X 5 - 2 Exadata quarter rack?
  • It is possible to get 2 minutes RTO for the 2 TB database running on rack quarter X 5-2?
  • What are the ways to reduce the OTR?
  • How long it is necessary to perform a full restore of database 2 TB quarter rack?

Thank you

Aerts

Abhi-

Here are my best attempts to answer your questions:

  • for the 2 TB database, what is the objective of minimum possible recovery (RTO) for the X 5 - 2 Exadata quarter rack?

    • There are so many variables to minimize the resulting RTO of used tools, network, storage, platform, distance/time of latency between physics and sleep, etc., it is difficult to respond to the possible minimum RTO. Theoretically using a solution like Golden Gate in a multi-master (two-way replication active/active) configuration, you may reach an RTO 0. This assumes that your application and database can support such a configuration. A more traditional and less complex DR configuration, using the data guard must be able to measure the RTO in a few minutes.
  • It is possible to get 2 minutes RTO for the 2 TB database running on rack quarter X 5-2?
    • In a real recovery architecture disaster primary/secondary with Exadata, the best solution is Data Guard. If correctly configured and able to minimize latency between main and backup, Server data hold switch or fail should be measured in minutes and should be possible to get almost 2 minutes RTO.
  • What are the ways to reduce the OTR?
  • How long it is necessary to perform a full restore of database 2 TB quarter rack?
    • Depends on where you are restoring from. We have seen great results in the backup and restore of time using a ZFS storage device connected via Infiniband Exadata. With 2 controller 4 disc tray configuration we were able to restore a database of 2 TB in just 8 minutes.

HTH,

Kasey

Tags: Database

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