The availability of the Long Term Retention (LTR) feature is limited to Enterprise and Elite editions. To access this feature, contact your Druva Account Manager or Support. This topic is subject to change based on the continuous improvements to this feature.
This article describes the procedure to enable Long Term Retention (LTR), monitor your savings via LTR, and restore the cold snapshots from the cold tier. You will also find information on the deletion of cold snapshots and early delete fee. We recommend that you read About Long Term Retention before proceeding to read this article.
Verify the retention period
To begin with, examine if the retention period you’ve set in your backup policy qualifies for LTR. To enable LTR, you need at least one-year retention for any snapshot retention type. Examples of retention periods that are eligible for LTR are as follows. Here, D, W, M, and Y stand for daily, weekly, monthly, and yearly snapshots, respectively.
However, the following is not a valid retention period:
Based on your retention, whether or not your backup policy is eligible for LTR can be seen on the Create New Backup Policy page. The following screen shows that the Enable Long Term Retention (LTR) toggle is disabled for this backup policy as the retention period is less than one year.
However, if your retention period is greater than or equal to one year, you are eligible to enable LTR as shown in the following screenshot:
Enable LTR by clicking the Enable Long Term Retention (LTR) toggle. It turns green upon getting enabled. On the backup policy details page, you can see the status of LTR as shown in the following screenshots:
You can check the status of LTR, that is if it's enabled or disabled. In the LTR column on the Manage Backup Policies page, you can see the status of LTR for a particular backup policy as shown in the following screenshot:
Note: In the case of Hyper-V and VMware, when LTR is enabled for a backup policy, file-level restore on cold snapshots is not supported.
Monitor your savings
Once LTR is enabled, we hope that this is an action you'd love to perform: monitoring your savings. To know the details of the credit savings you made by enabling LTR for your data, go to:
The Storage page by clicking Storage on the menu bar. In the following screenshot, you can view the split of LTR and non-LTR data, that is, the amount of data in the cold and warm tiers, respectively.
The Credit Consumption Report. In this report, you can view the details of your Phoenix credits consumed over a certain period and your LTR savings. The following screenshot shows an example report:
Restore data from cold tier
At the time of restoration, data from the cold tier is retrieved, moved temporarily to the warm tier, and then restored. Once you initiate the restoration process, the data retrieval from the cold tier and its restore from the warm happen automatically. Warmed up data is deleted from the warm tier after 10 days.
To restore the data from the cold tier (VMware as an example), perform the following steps:
On the Phoenix Management Console menu bar, click All Organizations, and then select the required organization from the drop-down list.
On the Phoenix Management Console menu bar, click Protect > VMware. List of all the registered VMware vCenter Servers and ESXi Hypervisors appear.
Click the vCenter Server or ESXi Hypervisor under which the virtual machine is managed. Details appear.
Under Configured Virtual Machines tab, search and select the virtual machine for which you want to restore the cold snapshots.
Click Restore. The Restore Data window appears.
In the left pane, expand Cold, and click the snapshot that you want to restore.
Click Disk Restore or Full VM restore. The restoration of the cold-tier data begins.
Delete cold snapshots
If you delete your data before the one-year retention period completes, Druva incurs an early delete cost. Hence, we charge you an early delete fee depending on the size of your data that you deleted early from the cold tier. The early delete fee is recorded in your billing.
Conditions for early delete fee
An early delete fee will apply if your cold snapshots get expired due to reduction of the retention period.
An early delete fee will apply if you manually delete the cold snapshots, backup sets or servers with cold snapshots before the one-year retention period completes.
Note: Snapshots older than one year (after LTR is enabled) will not incur any early delete fee.
Calculation of early delete fee
We’d calculate the early delete fee for early deletion of snapshots, backup sets, and servers (provided some or all data resides in the cold tier) and the same would reflect in your billing. Early deletion refers to the data that gets deleted before one year of the retention period. The early delete fee is calculated based on the size of the data that gets deleted from the cold tier earlier than one year.
Early Delete Fee (in credits) = 0.35*(12 - # months in cold tier)*(Data deleted in GB)