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Veritas NetBackup™ Snapshot Client Administrator's Guide

Last Published: 2020-09-13

Product(s): NetBackup & Alta Data Protection (8.3.0.1, 8.3)

Platform: Linux,UNIX,Windows

Setting up a NAS-Data-Protection policy

You can set up a NAS-Data-Protection policy for your workloads.

Note:

If you use cloud as a storage unit, you must configure appropriate buffer size. Refer to the Veritas NetBackup Cloud Administrator's Guide.

Note the following important points about NAS-Data-Protection policy.

The policy is supported for Nutanix and NetApp plug-ins only.
The NAS-Data-Protection is not supported in the DNAT environment.
This policy does not support copy-based retention for Snapshot images. Which means you cannot set the max-snapshot value under snapshot options. Ensure that you carefully plan your policy scheduling and snapshot retention in SLP.
Client side deduplication is not supported for NAS-Data-Protection policy.
Vendor Change Tracking (VCT) and Accelerator options are mutually exclusive for NAS-Data-Protection policy. You cannot enable both. Veritas recommends that you do not toggle the policy with these options between different execution of this policy.
Vendor Change Tracking (VCT) enabled backup with incremental schedule requires base snapshot copy to determine the difference between current snapshot copy and base snapshot copy. Differential incremental schedule refers to base snapshot copy from previous differential incremental or cumulative incremental or full schedule. Cumulative incremental schedule refers to base snapshot copy from previous cumulative incremental or full schedule. During VCT enabled backup with incremental schedule, if the base snapshot copy is not available then the backup operation might fail with the error shown in Activity Monitor Detailed status.
NAS-Data-Protection policy is a snapshot enabled data protection policy. You can configure only storage lifecycle policy (SLP) against policy's storage destination. Additionally, the SLP should always have Snapshot as the primary job and Backup from Snapshot as secondary job.
For NAS-Data-Protection policy, multiple images are created for a single volume that is backed up. The number of images is equal to the value configured for the Maximum number of streams per volume in the policy. Since a single image cannot be referred from a single volume, NetBackup groups the images associated with a volume. When an operation is performed on one of the images in a volume, the same operation is also performed on the other grouped images in the volume. For example, if Maximum number of streams per volume is set as four and you select one image for a volume to expire, the other three images also expire. The image grouping is applicable for the following operations:
- Browse and Restore
- Image expiration
- Image import
- Image duplication
- Image verification
- Set primary copy
  Note:
  Image grouping is not applicable for importing images as part of Image Sharing operation.

Note:

The NAS-Data-Protection policy cannot be configured using the NetBackup WebUI.

To set up a policy for NAS data protection

Open the NetBackup Administration Console.
Click NetBackup Management > Policies in the left pane.
In the All Policies pane, right-click and create a new one.
From the Policy type list, select NAS-Data-Protection
From the Policy Storage list, select Storage Lifecycle Policy for backup from snapshots.
The Perform snapshot backups option is selected by default.
(Optional) To track changes between two snapshots, select the Enable vendor change tracking for incremental backups check box.
Note:
At a given time, you can only use either the Enable vendor change tracking for incremental backupsor the Use Accelerator check box.
Click Options and set a value for the following parameters:
- Snapshot Type
- Snapshot Host
- Access Protocol: Based on your preference select NFS3 or NFS4.
By default, the Perform off-host backup option is selected. Select Backup Host Pool from the Use list and then select backup host pool name from the Machine list.
In the Dynamic Data Streaming Attributes section, the Allow dynamic streaming option is selected by default. Configure the following attributes:
Note:
With this setting, the Allow multiple data streams option is also selected.
- Maximum number of streams per volume
  The number of streams per volume must be between 1 to 20. The default value is four.
- Maximum number of files in a batch
  The number of files in a batch must be between 1 to 2000. The default value is 300.
(Optional) Select the Use Accelerator check box.
Note:
At a given time, you can use either Enable vendor change tracking for incremental backups or the Use Accelerator check box.
On the Schedules tab, set the required attributes for the schedule.
Note:
For Instant Recovery, only Snapshots and copy snapshots to a storage unit is supported and is selected by default.
On the Clients tab, from the NAS Vendor list, select the preferred vendor.
Click New to add a new client.
On the Backup Selections tab, click New to add a backup selection.
If you add a subdirectory from volume in the backup selection then the policy validation fails.
On the Exclude Volumes tab, in the Volume to exclude field, add the preferred volumes that you don't want to backup.
Click OK.