Performing failover and failback operations (with Global Mirror)

Global Mirror is a long-distance, two-site, remote copy solution that uses asynchronous technology. Global Mirror is based on existing Global Copy and FlashCopy functions.

• Global Mirror setup (DS Storage Manager)
  Use this DS Storage Manager process to set up your environment to use Global Mirror. Global Mirror processing is used for general transactions as well as with data recovery transactions. When Global Mirror is used for data recovery it asynchronously copies data from a host to a recovery site and maintains data on a storage unit at the recovery site.
• Using Global Mirror for a planned failover and failback
  Use this process to manage a planned failover involving two sites, which are referred to as local (or production) and remote (or recovery) sites, using Global Mirror.
• Using Global Mirror for an unplanned failover and failback
  Use this process to manage an unplanned failover and failback that involves two sites which are referred to as the local (or production) and remote (or recovery) sites.
• Recovering with and without the fast reverse restore feature
  The fast reverse restore feature, when used with Global Mirror functions, allows a FlashCopy relationship to be reversed without waiting for the background copy of the original FlashCopy to complete.