Locally migrated data

Backup Administration Guide for Hitachi NAS Platform

Version
15.1.x
Audience
anonymous
Part Number
MK-92HNAS007-29

Backup and restore of data sets that contain data migrated to other local Hitachi NAS file systems are affected by the following NDMP environment variables:

  • NDMP_BLUEARC_EXCLUDE_MIGRATED
  • NDMP_BLUEARC_INCLUDE_ONLY_MIGRATED
  • NDMP_BLUEARC_REMIGRATE
Environment variable D* S* Backup Restore
NDMP_BLUEARC_EXCLUDE_MIGRATED n y Migrated files are not included in the backup data. Migrated files cannot be restored.
n Migrated files are included in the backup data Depends on NDMP_BLUEARC_REMIGRATE.
NDMP_BLUEARC_INCLUDE_ONLY_MIGRATED n y Only migrated files are included in the backup data.

Depends on NDMP_BLUEARC_REMIGRATE.

n Normal files and migrated files are included in the backup data.

Depends on NDMP_BLUEARC_REMIGRATE.

NDMP_BLUEARC_REMIGRATE y y Migrated files are marked as such in the backup data. The recovery target file system is checked for a configured migration path. If one exists, the file is immediately migrated. The file data is never written to the primary file system. If no migration path is configured, a normal file is created.
n Migrated files appear as normal files in the backup data. Migrated files are converted to normal files.
Note: In the table, D* - Default and S* = Setting

Note that in most cases, NDMP Data Management Applications automatically use the environment variables that were specified on backup when restoring. It is recommended that you consider the desired restore behavior when specifying the backup variables. Other than in exceptional circumstances, use the same environment variables on restore as those specified at backup.

The variables to use for standard use cases are:
  • Only backup non-migrated data
    • NDMP_BLUEARC_EXCLUDE_MIGRATED = y
    • Other variables are ignored
  • Only backup migrated data, automatically migrating on recovery
    • NDMP_BLUEARC_INCLUDE_ONLY_MIGRATED = y
    • NDMP_BLUEARC_EXCLUDE_MIGRATED = n
    • NDMP_BLUEARC_REMIGRATE = y
  • Backup all data, migrated files automatically migrated on recovery
    • NDMP_BLUEARC_INCLUDE_ONLY_MIGRATED = n
    • NDMP_BLUEARC_EXCLUDE_MIGRATED = n
    • NDMP_BLUEARC_REMIGRATE = y