7.0 Migrating DST Volumes to Cloud

This section describes about how to migrate DST local and cluster volumes to cloud storage.

The following video demonstrates how to migrate DST cluster volumes to the cloud using CIS:

Prerequisites

  • Ensure to salvage the required files available in the DST shadow volume. Otherwise, the salvageable files are not migrated to cloud during the tier run.

  • It is recommended to take a backup of the DST shadow volume before performing the DST migration.

  • Ensure that all the active and running DST policies are completed or stopped.

  • In OES Remote Manager, under Manage NCP Services > Manage Server, ensure to set the DST parameter information as follows:

    REPLICATE_PRIMARY_TREE_TO_SHADOW: 1
SHIFT_ACCESSED_SHADOW_FILES: 0
SHIFT_DAYS_SINCE_LAST_ACCESS: 0
SHIFT_MODIFIED_SHADOW_FILES: 1
DUPLICATE_SHADOW_FILE_ACTION: 0
DUPLICATE_SHADOW_FILE_BROADCAST: 0

Figure 7-1 Migrating DST Volumes to Cloud

Procedure

  1. Using CIS management console, associate the DST volumes to CIS tier. For more information, see Migrate from DST.

  2. Migrate the DST shadow volume data to cloud.

  3. Remove the DST pair.

    1. To remove the shadow relationship for local DST volume pair, see Removing the Shadow Relationship for a Non-Clustered DST Shadow Volume in the OES 2018 SP3: Dynamic Storage Technology Administration Guide.

    2. To remove the shadow relationship for clustered DST volume pair, perform the following:

      1. Remove the shadow definition for the DST shadow volume pair and NCP bindings exclusion for the secondary volume on each node. For more information, see Removing the Shadow Definition and NCP/NSS Bindings Exclusion on All Nodes in the OES 2018 SP3: Dynamic Storage Technology Administration Guide.

      2. In the primary pool cluster resource scripts, remove (or comment out) the lines for the management of the secondary pool and secondary volume. For more information, see Preparing the Primary Pool Cluster Resource for Independent Use in the OES 2018 SP3: Dynamic Storage Technology Administration Guide.

      3. Online the pool with shadow volume. For more information, see Modifying the Secondary Pool Cluster Resource in the OES 2018 SP3: Dynamic Storage Technology Administration Guide.

  4. Ensure that the primary volume, shadow volume, and CBV are mounted.

  5. Using CIS management console, perform switch operation to move the DST tier to cloud tier. For more information, see Managing DST Migrate Tiers.