#### #### of the recovery group. The rehearsal package #### ####
#### #### is configured always in the recovery cluster.#### ####
#### #### During normal operation, the primary package #### ####
#### #### is running an application program | on the | #### #### | |||
#### | #### | primary cluster, and the recovery | package, | #### | #### |
#### | #### | which is configured to run the same | #### | #### | |
#### #### application, is idle on the recovery cluster.#### ####
#### #### If the primary package performs disk I/O, | #### #### |
#### #### the data that is written to disk is | #### #### |
#### #### replicated and made available for possible | #### #### |
#### #### use on the recovery cluster. | #### #### |
#### #### For some data replication techniques, this | #### #### |
#### #### involves the use of a data receiver package | #### #### |
#### #### running on the recovery cluster. | #### #### |
#### #### In the event of a major failure on the | #### #### |
#### #### primary cluster, the user issues the | #### #### |
#### #### cmrecovercl(1m) command to halt any data | #### #### |
#### #### receiver packages and start up all the | #### #### |
#### #### recovery packages that exist on the | #### #### |
#### #### recovery cluster. | #### #### |
#### #### During rehearsal operation, before starting | #### #### |
#### #### the rehearsal packages,care must be taken | #### #### |
#### #### that the replication between the primary and #### ####
#### #### the recovery sites is suspended. For some | #### #### |
#### #### data replication techniques which involve | #### #### |
#### #### the use of a data receiver package, | #### #### |
#### #### rehearsal operations must be commenced only | #### #### |
#### #### after shutting down the data receiver | #### #### |
#### #### package at the recovery cluster. Rehearsal | #### #### |
#### #### packages are started using the | #### #### |
#### #### cmrecovercl | #### #### |
#### #### Enter the name of every package recovery | #### #### |
#### #### group together with the fully qualified | #### #### |
#### #### names of the primary and recovery packages. | #### #### |
#### #### If appropriate, enter the fully qualified | #### #### |
#### #### name of a data receiver package. Note that | #### #### |
#### #### the data receiver package must be on the | #### #### |
#### #### same cluster as the recovery package. | #### #### |
#### #### The primary package name includes the | #### #### |
#### #### primary cluster name followed by a slash | #### #### |
#### #### ("/") followed by the package name on the | #### #### |
#### #### primary cluster. The recovery package name | #### #### |
#### #### includes the recovery cluster name, followed #### ####
#### #### by a slash ("/")followed by the package name #### ####
#### | #### | on the recovery cluster. | #### | #### |
#### | #### |
| #### | #### |
#### #### The data receiver package name includes the #### ####
#### #### recovery cluster name, followed by a slash | #### #### | |
#### #### ("/") followed by the name of the data | #### #### | |
#### #### receiver package on the recovery cluster. | #### #### | |
#### #### The rehearsal package name includes the | #### #### | |
#### #### recovery cluster name, followed by a slash | #### #### | |
#### #### ("/"). |
| #### #### |
#### #### Up to 29 recovery groups can be entered. | #### #### | |
#### #### |
| #### #### |
#### #### Example: |
| #### #### |
#### #### RECOVERY_GROUP_NAME | nfsgroup | #### #### |
#### #### PRIMARY_PACKAGE | westcoast/nfspkg | #### #### |
#### #### DATA_SENDER_PACKAGE | westcoast/nfssenderpkg #### #### | |
#### #### RECOVERY_PACKAGE | eastcoast/nfsbackuppkg #### #### | |
#### #### | DATA_RECEIVER_PACKAGE eastcoast/nfsreplicapkg#### #### | ||||
#### #### | REHEARSAL_PACKAGE | eastcoast/nfsrehearsalpkg #### #### | |||
#### #### |
|
| #### #### | ||
#### | #### | RECOVERY_GROUP_NAME hpgroup | #### | #### | |
#### | #### | PRIMARY_PACKAGE | westcoast/hppkg | #### | #### |
Section 2 of the Continentalclusters ASCII configuration file 117
