Disk recovery in cross-domain replication DR environment
If the disk technology being used does not support Auto Image Replication, an alternative approach is simply to replicate the entire storage and then use a combination of catalog recovery and the nbcatsync utility to populate the catalog at the disaster recovery location.
The nbcatsync utility facilitates replication even if disk media IDs recorded at the EMM database and at the metadata component of the image database are different. The nbcatsync utility aligns the disk media IDs in the image database metadata with the media IDs in the disaster recovery domain's EMM database. The regular backups and catalog backups that are made at the production site are written to the replicating disk storage. The catalog backup's disaster recovery file is sent to the disaster recovery domain.
The nbcatsync utility is supported on all primary server platforms. You can use it with all AdvancedDisk types supported by NetBackup.
To recover a disk in a cross-domain replication DR environment
- Sign in to the DR domain's primary server.
- Align the disk media ID information in the catalog backup's DR file with the disk media ID information in the DR domain's EMM database. Run the following command:
nbcatsync -sync_dr_file <DR file name>
- Perform a partial catalog recovery from the replicated catalog backup. Run the following command:
bprecover -wizard
When you are prompted
"Do you want to recover the entire NetBackup catalog? (Y/N)", enter N. - Run the cat_export - all to export the metadata from the replicated database backup.
- Run the command cat_import - all to import the exported metadata into the active database.
- Align the disk media IDs associated with the image records recovered by the partial catalog recovery with the disk media IDs present in the DR domain. Run the following command:
nbcatsync -backupid <restored catalog backup ID>