Disaster Recovery
Disaster recovery includes data recovery and site recovery. Data recovery is how you protect and restore your data. Site recovery is how you protect and restore your entire site, including your data.
Data recovery is facilitated with the hypervisor shared storage and PSQL transaction logging and transaction durability. See
Transaction Logging and Durability
. You can use transaction logging and transaction durability with PSQL Server and Vx Server.
Site recovery can be accomplished with both physical machines and virtual machines. PSQL operates normally provided that host names remain the same in the recovered site. This is typically the case for virtual machines. If you are recovering physical machines and the host name at the recovery site is different, the PSQL product keys will change to the failed validation state when PSQL starts. PSQL will continue to operate normally in the failed validation state for several days, during which you can either repair the key or move back to the original site.
No special steps are required to install or configure PSQL in a disaster recovery environment. Refer to the hypervisor documentation.