Shortening unplanned outages

 

Unplanned outages do occur, and a key to availability is to ensure that you can recover from the outages as quickly as possible.

The purpose of all recovery strategies is to get back to where you were before the outage occurred.

If you have a single system and you cannot achieve the level of availability you need using these strategies, you can consider clusters.

• Reducing the time to restart your system
  Unfortunately, systems periodically experience an unplanned outage. Use the availability tools described here to restart your system as quickly as possible after an unplanned outage.

• Recovering recent changes after an unplanned outage
  After an unplanned outage, your goal is to get your system up and running again as quickly as possible. You want to get back to where you were before the outage occurred without having to manually reenter the transactions.

• Recovering lost data after an unplanned outage
  You might lose data as a result of an unplanned outage, such as a disk failure. The most extreme example of data loss is losing your entire site, such as what might happen as a result of a natural disaster.

• Reducing the time to vary on independent disk pools
  When unplanned outages occur, the data stored within independent disk pools is unavailable until they can be restarted. To ensure that the restart occurs quickly and efficiently, you can use the strategies described in this topic.

 

Parent topic:

Availability roadmap