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Protection Tab

The Protection tab displays protection group details for the current array.

Figure 33. Protection Tab

Protection Tab

The Protection window contains two main panes:

  • Navigation Pane

  • Details Pane

Navigation Pane

The navigation pane displays a list of all protection groups associated with the array.

Figure 34. Protection - Navigation Pane

Protection - Navigation Pane

Protection groups are organized by Source Groups and Target Groups. The Target Groups section only appears if another array has created a protection group, established a connection to this array, and set this array as a target array for replication purposes.

A source protection group represents a protection group that has been created on the current (source) array to generate and retain snapshots.

A target protection group represents a protection group that has been created on another array and has the current array as one of its replication targets.

Click a protection group name to display a detailed view for the protection group in the details pane.

Details Pane

The details pane displays the protection group details for the selected source or target protection group.

The bar than runs along the top of the details pane displays the physical storage space occupied by snapshot data for the selected protection group. All values are rounded to two decimal places.

Figure 35. Protection - Details Pane - Consumption Bar

Protection - Details Pane - Consumption Bar

The bar graph includes a single component, called Snapshots, that represents the physical space occupied on the array by data unique to one or more snapshots. The space used includes destroyed snapshots that are in the eradication pending period.

The main section of the details pane is divided into the following sub-headings:

  • Schedules. Snapshot and replication schedule on the source array.

  • Targets. Target arrays that have been added to the source array.

  • Members. Members, such as volumes, hosts, or host groups, that have been added to the source array

  • Snapshots. Snapshots or replicated snapshots on the current array. Select a source protection group to view a list of snapshots that have been taken on the current array. Select a target protection group to view a list of snapshots that have been replicated to the current array.

Schedules

The Schedules screen displays the scheduling details for the protection group.

Figure 36. Protection - Details Pane - Schedules

Protection - Details Pane - Schedules

Each protection group includes two schedules:

  • Snapshot schedule

  • Replication schedule

The snapshot schedule is independent of the replication schedule, meaning that you can enable one schedule without enabling the other. You can also enable or disable both schedules.

Snapshot Schedule

The snapshot schedule displays the snapshot and retention schedule.

Configure the snapshot schedule to determine how often Purity should generate protection group snapshots and how long Purity should retain the generated snapshots.

For example, a new protection group snapshot schedule may be set to:

  • Create a snapshot every 1 hour.

  • Retain all snapshots for 1 day, and then retain 4 snapshots per day for 7 more days.

This means that Purity generates a snapshot every hour and keeps each generated snapshot for 24 hours.

For example, a snapshot that is generated on Saturday at 1:00 pm is kept until Sunday 1:00 pm.

Figure 37. Snapshot Schedule

Snapshot Schedule

After the one-day retention period, Purity keeps four of the snapshots for an additional seven days. To determine which four snapshots are retained per day, Purity takes all of the snapshots generated in the past day and selects the four snapshots that are most evenly spaced out throughout the day. As the seven-day period for each snapshot elapses, the snapshot is eradicated.

Once you enable the snapshot schedule, Purity immediately starts the snapshot process.

Replication Schedule

The replication schedule section displays the replication and retention schedule.

Configure the replication schedule to determine how often Purity should replicate the protection group snapshots to the target arrays and how long Purity should retain the replicated snapshots. You can configure a blackout period to specify when replication should not occur.

For example, a new protection group replication schedule may be set to the following:

  • Replicate the snapshot every 4 hours, except between 8:00 am and 5:00 pm.

  • Retain all replicated snapshots for 1 day, and then retain 4 snapshots per day for 7 more days.

This means that Purity generates a snapshot on the source array every four hours and immediately replicates each snapshot to the target array, Purity retains each replicated snapshot for one day (24 hours).

For example, a snapshot that is generated on the source array and replicated to the target arrays on Friday 2:00 am is kept until Saturday 2:00 am.

The replication process stops during the blackout period between 8:00 am and 5:00 pm. The start of a blackout period will not impact any snapshot replication sessions that are already in progress. Instead, Purity will wait until the in-progress snapshot replication is complete before it observes the blackout period.

Blackout periods only apply to scheduled replications. Replications generated by on-demand snapshots (via Protection > Snapshots > Create Snapshot > Replication Now) do not observe the blackout period.

Figure 38. Replication Schedule

Replication Schedule

After the one-day retention period, Purity keeps four of the replicated snapshots for an additional seven days. The other replicated snapshots are eradicated. To determine which four replicated snapshots are retained per day, Purity takes all of the replicated snapshots generated in the past day and selects the four that are most evenly spaced out throughout the day. Purity destroys each replicated snapshot as its seven-day period elapses.

Once you enable the replication schedule, Purity immediately starts the replication process, with the following exceptions:

  • If you are enabling the replication schedule during the blackout period, Purity waits for the blackout period to end before it begins the replication process.

  • If you are enabling the replication schedule and the 'at' time is specified, Purity starts the replication process at the specified 'at' time.

Targets

The Targets screen, lists all of the target arrays that have been added to the source array. You only need to add target arrays if you plan to replicate snapshots. The Allowed column indicates whether the target arrays have allowed (true) or disallowed (false) replication.

Figure 39. Protection - Details Pane - Targets

Protection - Details Pane - Targets

After a target has been added to the source array, the target array must allow or disallow replication.

Members

The Members screen displays a list of all storage objects (volumes, hosts, or host groups) that have been added to the source array.

Figure 40. Protection - Details Pane - Members

Protection - Details Pane - Members

If you are viewing member details for a target group, the member name is made up of the array name and the protection group name.

If you added volumes to the source array, Purity generates snapshots of those specific volumes. If you added hosts or host groups, Purity generates snapshots of the volumes within those hosts or host groups. If the same volume appears in multiple hosts or host groups, only one copy of the volume is kept. Note: Volumes, hosts, and host groups are managed through the Storage tab.

Snapshots

The Snapshots screen displays a list of all protection group snapshots, both scheduled and on-demand, that have been taken on the source array.

Select a protection group from the Source Groups section to view a list of snapshots that have been taken on the current array in accordance with the snapshot schedule. The list includes the snapshot creation date and time and the physical storage space occupied by snapshot data.

Figure 41. Protection - Details Pane - Snapshots (Source Groups View)

Protection - Details Pane - Snapshots (Source Groups View)

Select a protection group from the Target Groups section to view a list of snapshots that have been taken on another array and replicated to the current (target) array in accordance with the replication schedule. The list includes the snapshot name, replication start and end times, amount of data transferred, replication progress, and physical storage space occupied by the replicated snapshot data. The data transferred amount is calculated as the size difference between the current and previous snapshots after data reduction.

Figure 42. Protection - Details Pane - Snapshots (Target Groups View)

Protection - Details Pane - Snapshots (Target Groups View)

On-Demand Snapshots

On-demand snapshots represent single snapshots that are manually generated and retained on the source array at any point in time. When you generate an on-demand snapshot, you can also add a suffix to the snapshot name, apply the scheduled retention policy to the on-demand snapshot, and replicate the on-demand snapshot to the target arrays.

Figure 43. Create On-Demand Snapshot

Create On-Demand Snapshot

The "Optional Suffix" option allows you to add a unique suffix to the on-demand snapshot name. The suffix name, which can include letters, numbers and dashes (-), replaces the protection group snapshot number in the protection group snapshot name.

Select the “Apply Retention” option to apply the scheduled snapshot retention policy to the on-demand snapshot. If you do not enable “Apply Retention”, the on-demand snapshot is saved until you manually destroy it.

Select the “Replicate Now” option to replicate the snapshot to the target arrays. The snapshot is retained on both the source and target arrays. If you also enable “Apply Retention”, the snapshots inherit the retention policies set in the respective snapshot and retention schedules.

Configuration Overview

Configure the snapshot schedule to determine how often Purity should generate protection group snapshots and how long Purity should retain the generated snapshots.

Configure the replication schedule to determine how often Purity should replicate the protection group snapshots to the target arrays and how long Purity should retain the replicated snapshots.

Since the snapshot schedule is independent of the replication schedule, you can configure either or both schedules.

Snapshot Schedule Configuration

To configure the snapshot schedule, create and configure the protection group and set its snapshot and retention schedule.

Figure 44. Snapshot Schedule Configuration

Snapshot Schedule Configuration

Create and Configure the Protection Group

Protection groups are created and configured on the source array. After you create the protection group, you must add members (volumes, hosts, or host groups) and set the snapshot schedule. You can perform these steps in any order before you enable the schedule.

You can only add members of the same object type. For example, you cannot add hosts or host groups to a protection group that contains volumes. The members that you add to the protection group should share the same snapshot frequency and retention policy. If you add hosts or host groups, it is the volumes within those hosts or host groups that are protected.

Set the Snapshot and Retention Schedule

Set the snapshot schedule to specify how often Purity should generate protection group snapshots and how long Purity should retain the generated snapshots. If the snapshot frequency is set to one or more days, optionally specify the preferred time of day for the snapshot to occur.

After you have added members and set the snapshot schedule, enable the schedule to start the snapshot and retention process. You can enable and disable the schedule at any time to manually start and stop, respectively, the process.

Replication Schedule Configuration

To configure the replication schedule, connect the source and target arrays, configure the protection group, and set its replication and retention schedule.

Figure 45. Replication Schedule Configuration

Replication Schedule Configuration

Connect the Source and Target Arrays

The first step in the configuration process is to establish connections between the source array and the target arrays. To connect the source array to its target arrays, log in to each target array to obtain a connection key, and then log in to the source array and use the connection keys to connect to each target array.

Once a source and target array are connected, optionally configure network bandwidth throttling on the source array to set maximum threshold values for outbound traffic. Network bandwidth throttling is configured through System > Connected Arrays.

Create and Configure the Protection Group

Protection groups are created and configured on the source array. After you create the protection group, you must add target arrays and members (volumes, hosts, or host groups), and set the replication schedule. You can perform these steps in any order before you enable the schedule.

The protection group must include at least one target array to where the replicated data is written. The administrator on each target array that has been added to the protection group must then 'allow' replication from the source array. Snapshot data will only be transferred to a target array that has allowed replication.

Administrators on target arrays can allow and disallow replication at any time. Allowing and disallowing replication on a target array will not impact the replication process between the source array and other target arrays.

If you disallow replication while a replication session is in progress, Purity will wait until the session is complete and then stop any new replication sessions from being created.

You can only add members of the same object type. For example, you cannot add hosts or host groups to a protection group that contains volumes. The members that you add to the protection group should share the same snapshot frequency and retention policy. If you add hosts or host groups, it is the volumes within those hosts or host groups that are protected.

Set the Replication and Retention Schedule

Set the replication schedule to specify how often Purity should replicate the protection group snapshots to the target arrays and how long Purity should retain the replicated snapshots. You can configure a blackout period to specify when replication should not occur.

If the replication frequency is set to one or more days, optionally specify the preferred time of day for the replication to occur.

After you have added the target arrays and members and set the replication schedule, enable the schedule to start the replication and retention process. You can enable and disable the schedule at any time to manually start and stop, respectively, the process.

Process Steps

This section describes the steps on how to configure the protection group snapshot and replication schedules.

Connect the Source and Target Arrays

Connecting a target array to the source array

  1. Log in to the target array.

  2. Select System > Connected Arrays.

  3. Click the menu icon and select Get Connection Key. The Connection Key pop-up window appears.

  4. Copy the connection key string.

  5. Log in to the source array.

  6. Select System > Connected Arrays.

  7. Click the menu icon and select Connect Array. The Connect pop-up window appears.

  8. Set the following connection details:

    • In the Management Address field, enter the virtual (vir0) IP address or FQDN of the target array.

    • In the Replication Address field, enter the IP address or FQDN of the replication bond (replbond) interface on the target array.

    • Leave the default Type as Replication.

    • In the Connection Key field, enter the connection key of the target array.

  9. Click Connect. The green square in the Connected column of the Connected Arrays view indicates that the two arrays are successfully connected.

Configure the Protection Groups

Creating a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Protection Group navigation pane, click the Source Groups header. The Protection Groups details pane appears.

  4. Click the menu icon in the Protection Groups header bar and select Create Protection Group. The Create Protection Group pop-up window appears.

  5. Type the protection group name.

  6. Click Create.

  7. The new protection group appears in the Protection Group navigation pane.

Adding target arrays to a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Targets sub-heading to display a list of target arrays that are already associated with the selected protection group.

  5. Click the menu icon and select Add Targets. The Select Targets pop-up window appears.

  6. In the Available Targets column, click the target array you want to add. The array appears in the Selected Targets column.

  7. Click Confirm to confirm the addition of the selected target. You cannot replicate to the target array until the target array allows replication.

Allowing replication from a source array to a target array (target array only)

  1. Log in to the target array.

  2. Select the Protection tab.

  3. In the Target Groups section of the navigation pane, click the protection group in which the target array belongs. The protection group details appear in the details pane.

  4. In the details pane, click the Targets sub-heading. The array appears in the list of target arrays.

  5. Click the check box to select the target array.

  6. Click the menu icon and select Allow Replication.

  7. In the details pane, verify that the Allowed status for the array is set to True.

Adding a member (volume, host, or host group) to a protection group (source array only)

You can either add volumes directly to a protection group or add volumes indirectly to a protection group via the hosts or host groups in which they belong. A protection group can only include members of one type. A volume, host, or host group can belong to any number of protection groups.

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Members sub-heading to display a list of volumes, hosts, or host groups that are already associated with the selected protection group. You can only add members of one type to a protection group.

  5. Click the menu icon and select Add <Member>. The Select <Member> pop-up window appears.

  6. In the Existing <Member> column, click the member you want to add. The member appears in the Selected <Member> column.

  7. Click Confirm to confirm the addition of the selected member.

Configure the Snapshot and Replication Schedules

Configuring the snapshot and retention schedule for a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group. When you create a protection group, the snapshot and replication schedules are disabled by default.

  5. Select the Create a snapshot… check box to enable the snapshot and retention schedule.

  6. Set the following snapshot and retention details:

    • Set the frequency of the snapshot creation.

    • If the snapshot frequency is set to one or more days, optionally set the 'at' time to specify the preferred hour of each day when Purity creates the snapshot. For example, if the snapshot schedule is set to "Create a snapshot every 2 days at 6pm," Purity creates the snapshots every 2 days at or around 6:00 pm. If the 'at' option is set to dash (-), Purity chooses the time of day to create the snapshot.

    • Set the snapshot retention schedule to keep the specified number of snapshots for the specified length of time (as minutes, hours, or days) and then to keep the specified number of snapshots for the specified additional number of days.

  7. Click Save to save the snapshot and retention schedule. The array automatically starts generating and retaining snapshots according to the configured schedule.

Configuring the replication and retention schedule for a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group. When you create a protection group, the snapshot and replication schedules are disabled by default.

  5. Select the Replicate every… check box to enable the replication and retention schedule.

  6. Set the following replication and retention details:

    • Set the replication frequency.

    • If the replication frequency is set to one or more days, optionally set the 'at' time to specify the preferred hour of each day when Purity replicates the snapshot. For example, if the replication schedule is set to "Replicate every 4 days at 6pm," Purity replicates the snapshots every four days at or around 6:00 pm. If the 'at' option is set to dash (-), Purity chooses the time of day to replicate the snapshot.

    • Set the blackout period, if any. The replication process stops during the blackout period. When the blackout period starts, replication processes that are still in progress will not be interrupted. Instead, Purity will wait until the in-progress snapshot replication is complete before it observes the blackout period.

    • Set the retention schedule to keep the specified number of replicated snapshots for the specified length of time (as minutes, hours, or days) and then to keep the specified number of snapshots for the specified additional number of days.

  7. Click Save to save the replication and retention schedule. The array automatically starts replicating snapshots and retaining the replicated snapshots according to the configured schedule.

Manage the Snapshots

Enabling the snapshot and replication schedule (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group. When you create a protection group, the snapshot and replication schedules are disabled by default.

  5. To enable the snapshot and retention schedule, select the Create a snapshot… check box.

  6. To enable the replication and retention schedule, select the Replicate every… check box.

Disabling the snapshot and replication schedule (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group.

  4. To disable the snapshot and snapshot retention schedule, clear the Create a snapshot… check box. The array immediately stops generating and retaining snapshots.

  5. To disable the replication and retention schedule, clear the Replicate every… check box. The array automatically stops replicating snapshots.

Copying a volume snapshot to create a new volume

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the navigation pane, click the protection group that contains the volume snapshot. The protection group details appear in the details pane.

  4. In the details pane, click the Snapshots sub-heading to display a list of snapshots, both scheduled and on-demand, that have been generated for the selected protection group.

  5. Click the name of the snapshot containing the volume you want to copy. The Volume Snapshots in [Protection Group Name] pop-up window appears.

  6. Click the menu icon for the volume you want to copy and select Copy Snapshot. The Copy Snapshot pop-up window appears.

  7. Type the name of the new volume.

  8. Click Create.

  9. To view the new volume, select Storage. The new volume appears in the Volumes section of the navigation pane.

Renaming a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. Click the menu icon and select Rename Protection Group.

  5. Type the new name of the protection group.

  6. Click Save.

Destroying a protection group (source array only)

  1. You can only destroy protection groups from the source array.

  2. Log in to the source array.

  3. Select the Protection tab.

  4. In the navigation pane, click Source Groups. A list of protection groups that have been created on the source array appears in the details pane.

  5. Click the check box to select the protection group you want to destroy.

  6. Click the menu icon and select Destroy Selected Protection Groups. The Destroy Selected Protection Groups dialog box appears.

  7. Click Confirm to confirm the destruction of the selected protection group. The destroyed protection group begins its 24-hour eradication pending period.

  8. Click Destroyed Groups to verify that the protection group has been moved to the Destroyed Protection Groups pane.

    During the eradication pending period, you can recover the protection group to bring the group and its content back to its previous state, or manually eradicate the destroyed protection group to reclaim physical storage space occupied by the destroyed protection group snapshots.

    When the 24-hour eradication pending period has lapsed, Purity starts reclaiming the physical storage occupied by the protection group snapshots.

    Once reclamation starts, either because you have manually eradicated the destroyed protection group, or because the eradication pending period has lapsed, the destroyed protection group and its snapshot data can no longer be recovered.

Recovering a destroyed protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click Destroyed Groups. A list of destroyed protection groups appears in the details pane.

  4. Click the check box to select the protection group you want to recover.

  5. Click the menu icon and select Recover Selected Protection Groups. The Recover Selected Protection Groups dialog box appears.

  6. Click Confirm to confirm the recovery of the selected protection group.

  7. Click Source Groups to verify that the protection group, including its snapshot data, appears in the Protection Groups pane.

Eradicating a destroyed protection group (source array only)

During the eradication pending period, you can manually eradicate the destroyed protection group to reclaim physical storage space occupied by the destroyed protection group snapshots.

Once reclamation starts, the destroyed protection group and its snapshot data can no longer be recovered.

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click Destroyed Groups. A list of destroyed protection groups appears in the details pane.

  4. Click the check box to select the protection group you want to recover.

  5. Click the menu icon and select Eradicate Selected Protection Groups. The Eradicate Selected Protection Groups dialog box appears.

  6. Click Confirm to permanently eradicate the selected protection group.

    When the 24-hour eradication pending period has lapsed, Purity starts reclaiming the physical storage occupied by the protection group snapshots.

Removing a target array from a protection group

Removing a target array from a protection group immediately deletes all of the data on the target array that was sent from its source array. As a result, replicating data again from the source array to the target array would cause another baseline transfer.

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Targets sub-heading to display a list of target arrays that are associated with the selected protection group.

  5. Click the check box to select the target array you want to remove.

  6. Click the menu icon and select Remove Selected Targets.

  7. Click Confirm to confirm the removal of the selected target.

Removing a member (volume, host, or host group) from a protection group (source array only)

  1. Log in to the source array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Members sub-heading to display a list of volumes, hosts, or host groups that are already associated with the selected protection group.

  5. Click the check box to select the member you want to remove.

  6. Click the menu icon and select Remove Selected <Member>.

  7. Click Confirm to confirm the removal of the selected member.

Destroying a snapshot

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group that contains the generated snapshots you want to destroy. The protection group details appear in the details pane.

  4. In the details pane, click the Snapshots sub-heading. A list of all snapshots generated for the selected protection group appears.

  5. Click the check box to select the snapshot you want to destroy.

  6. Click the menu icon and select Destroy Selected Snapshots. The Destroy Selected Protection Groups dialog box appears.

  7. Click Confirm to confirm the removal of the selected snapshot.

  8. click Destroyed Groups to verify that the snapshot has been moved to in the Destroyed Protection Groups pane.

  9. The destroyed snapshot goes through a 24-hour eradication pending period. Within the eradication pending period, you can recover the snapshot. During the eradication pending period, you can also permanently eradicate the destroyed snapshot to free up space.

Disallowing replication (target array only)

  1. Log in to the target array.

  2. Select the Protection tab.

  3. In the Target Groups section of the navigation pane, click the protection group in which the target array belongs. The protection group details appear in the details pane.

  4. In the details pane, click the Targets sub-heading. The array appears in the list of target arrays.

  5. Click the check box to select the target array.

  6. Click the menu icon and select Disallow Replication.

  7. In the details pane, verify that the Allowed status for the array is set to False.

View Snapshot Details

Viewing the snapshot and retention schedule for a protection group

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group. When you create a protection group, the snapshot and replication schedules are disabled by default.

Viewing the replication and retention schedule for a protection group

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the Source Groups section of the navigation pane, click the protection group. The protection group details appear in the details pane.

  4. In the details pane, click the Schedules sub-heading to display the snapshot and replication schedule for the selected protection group. When you create a protection group, the snapshot and replication schedules are disabled by default.

Viewing destroyed protection groups

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the Source Groups or Target Groups section of the navigation pane, click Destroyed Groups. A list of destroyed protection groups and snapshots appears in the details pane.

Viewing destroyed snapshots

  1. Log in to the source or target array.

  2. Select the Protection tab.

  3. In the Source Groups or Target Groups section of the navigation pane, click Destroyed Groups. A list of destroyed protection groups and snapshots appears in the details pane.