Managing and monitoring protection relationships
Unified Manager for DM Series enables you to create protection relationships, to monitor and troubleshoot SnapMirror and SnapVault relationships on managed clusters, and to restore data when it is overwritten or lost.
For SnapMirror operations there are two replication types:
- Asynchronous
Replication from the primary to the secondary volume is determined by a schedule.
- Synchronous
Replication is performed simultaneously on the primary and secondary volume.
You can perform up to 10 protection jobs simultaneously with no performance impact. You might experience some performance impact when you run between 11 and 30 jobs simultaneously. Running more than 30 jobs simultaneously is not recommended.
- Types of SnapMirror protection
Depending on the deployment of your data storage topology, Unified Manager enables you to configure multiple types of SnapMirror protection relationships. All variations of SnapMirror protection offer failover disaster recovery protection, but offer differing capabilities in performance, version flexibility, and multiple backup copy protection. - Viewing volume protection relationships
From the Relationship: All Relationships view, and from the Volume Relationships page, you can view the status of existing volume SnapMirror and SnapVault relationships. You can also examine details about protection relationships, including transfer and lag status, source and destination details, schedule and policy information, and so on. - Creating a SnapVault protection relationship from the Health: All Volumes view
You can use the Health: All Volumes view to create SnapVault relationships for one or more volumes on the same Storage VM to enable data backups for protection purposes. - Creating a SnapVault protection relationship from the Volume / Health details page
You can create a SnapVault relationship using the Volume / Health details page so that data backups are enabled for protection purposes on volumes. - Creating a SnapMirror protection relationship from the Health: All Volumes view
Using the Health: All Volumes view enables you to create several SnapMirror protection relationships at one time by selecting more than one volume on the same storage VM. - Creating a SnapMirror protection relationship from the Volume / Health details page
You can use the Volume / Health details page to create a SnapMirror relationship so that data replication is enabled for protection purposes. SnapMirror replication enables you to restore data from the destination volume in the event of data loss on the source. - Creating a SnapMirror relationship with version-flexible replication
You can create a SnapMirror relationship with version-flexible replication. Version-flexible replication enables you to implement SnapMirror protection even if source and destination volumes run under different versions of ONTAP. - Creating SnapMirror relationships with version-flexible replication with backup option
You can create a SnapMirror relationship with version-flexible replication and backup option capability. Backup option capability enables you to implement SnapMirror protection and also retain multiple versions of backup copies at the destination location. - Configuring destination efficiency settings
You can configure destination efficiency settings such as deduplication, compression, autogrow, and space guarantee on a protection destination using the Advanced Destination Settings dialog box. You use these settings when you want to maximize space utilization on a destination or secondary volume. - Creating SnapMirror and SnapVault schedules
You can create basic or advanced SnapMirror and SnapVault schedules to enable automatic data protection transfers on a source or primary volume so that transfers take place more frequently or less frequently, depending on how often the data changes on your volumes. - Creating cascade or fanout relationships to extend protection from an existing protection relationship
You can extend protection from an existing relationship by creating either a fanout from the source volume or a cascade from the destination volume of an existing relationship. You might do this when you need to copy data from one site to many sites or to provide additional protection by creating more backups. - Editing protection relationships from the Volume Relationships page
You can edit existing protection relationships to change the maximum transfer rate, the protection policy, or the protection schedule. You might edit a relationship to decrease the bandwidth used for transfers, or to increase the frequency of scheduled transfers because data is changing often. - Editing protection relationships from the Volume / Health details page
You can edit existing protection relationships to change the current maximum transfer rate, protection policy, or protection schedule. You might edit a relationship to decrease the bandwidth used for transfers, or to increase the frequency of scheduled transfers because data is changing often. - Creating a SnapMirror policy to maximize transfer efficiency
You can create a SnapMirror policy to specify the SnapMirror transfer priority for protection relationships. SnapMirror policies enable you to maximize transfer efficiency from the source to the destination by assigning priorities so that lower-priority transfers are scheduled to run after normal-priority transfers. - Creating a SnapVault policy to maximize transfer efficiency
You can create a new SnapVault policy to set the priority for a SnapVault transfer. You use policies to maximize the efficiency of transfers from the primary to the secondary in a protection relationship. - Aborting an active data protection transfer from the Volume Relationships page
You can abort an active data protection transfer when you want to stop a SnapMirror replication that is in progress. You can also clear the restart checkpoint for transfers subsequent to the baseline transfer. You might abort a transfer when it conflicts with another operation, such as a volume move. - Aborting an active data protection transfer from the Volume / Health details page
You can abort an active data protection transfer when you want to stop a SnapMirror replication that is in progress. You can also clear the restart checkpoint for a transfer if it is not a baseline transfer. You might abort a transfer when it conflicts with another operation, such as a volume move. - Quiescing a protection relationship from the Volume Relationships page
From the Volume Relationships page, you can quiesce a protection relationship to temporarily prevent data transfers from occurring. You might quiesce a relationship when you want to create a Snapshot copy of a SnapMirror destination volume that contains a database, and you want to ensure that its contents are stable during the Snapshot copy operation. - Quiescing a protection relationship from the Volume / Health details page
You can quiesce a protection relationship to temporarily prevent data transfers from occurring. You might quiesce a relationship when you want to create a Snapshot copy of a SnapMirror destination volume that contains a database, and you want to ensure that its contents are stable during the Snapshot copy. - Breaking a SnapMirror relationship from the Volume Relationships page
You can break a protection relationship to stop data transfers between a source volume and a destination volume in a SnapMirror relationship. You might break a relationship when you want to migrate data, for disaster recovery, or for application testing. The destination volume is changed to a read/write volume. You cannot break a SnapVault relationship. - Breaking a SnapMirror relationship from the Volume / Health details page
You can break a protection relationship from the Volume / Health details page and stop data transfers between a source and destination volume in a SnapMirror relationship. You might break a relationship when you want to migrate data, for disaster recovery, or for application testing. The destination volume is changed to a read-write volume. You cannot break a SnapVault relationship. - Removing a protection relationship from the Volume Relationships page
From the Volume Relationships page, you can remove a protection relationship to permanently delete an existing relationship between the selected source and destination: for example, when you want to create a relationship using a different destination. This operation removes all metadata and cannot be undone. - Removing a protection relationship from the Volume / Health details page
You can remove a protection relationship to permanently delete an existing relationship between the selected source and destination: for example, when you want to create a relationship using a different destination. This operation removes all metadata and cannot be undone. - Resuming scheduled transfers on a quiesced relationship from the Volume Relationships page
After you have quiesced a relationship to stop scheduled transfers from occurring, you can use Resume to re-enable scheduled transfers so that data on the source or primary volume is protected. Transfers resume from a checkpoint, if one exists, at the next scheduled transfer interval. - Resuming scheduled transfers on a quiesced relationship from the Volume / Health details page
After you have quiesced a relationship to stop scheduled transfers from occurring, you can use Resume on the Volume / Health details page to reenable scheduled transfers so that data on the source or primary volume is protected. Transfers resume from a checkpoint, if one exists, at the next scheduled transfer interval. - Initializing or updating protection relationships from the Volume Relationships page
From the Volume Relationships page, you can perform a first-time baseline transfer on a new protection relationship, or update a relationship if it is already initialized and you want to perform a manual, unscheduled incremental update to transfer immediately. - Initializing or updating protection relationships from the Volume / Health details page
You can perform a first-time baseline transfer on a new protection relationship, or update a relationship if it is already initialized and you want to perform a manual, unscheduled incremental update to transfer data immediately. - Resynchronizing protection relationships from the Volume Relationships page
From the Volume Relationships page, you can resynchronize a relationship either to recover from an event that disabled your source volume or when you want to change the current source to a different volume. - Resynchronizing protection relationships from the Volume / Health details page
You can resynchronize data on a SnapMirror or SnapVault relationship that was broken and then the destination was made read/write so that data on the source matches the data on the destination. You might also resynchronize when a required common Snapshot copy on the source volume is deleted causing SnapMirror or SnapVault updates to fail. - Reversing protection relationships from the Volume Relationships page
When a disaster disables the source volume in your protection relationship, you can use the destination volume to serve data by converting it to a read/write volume while you repair or replace the source. When the source is again available to receive data, you can use the reverse resynchronization operation to establish the relationship in the reverse direction, synchronizing the data on the source with the data on the read/write destination. - Reversing protection relationships from the Volume / Health details page
When a disaster disables the source volume in your protection relationship, you can use the destination volume to serve data by converting it to read/write while you repair or replace the source. When the source is again available to receive data, you can use the reverse resynchronization operation to establish the relationship in the reverse direction, synchronizing the data on the source with the data on the read/write destination. - Restoring data using the Health: All Volumes view
You can restore overwritten or deleted files, directories, or an entire volume from a Snapshot copy by using the restore feature on the Health: All Volumes view. - Restoring data using the Volume / Health details page
You can restore overwritten or deleted files, directories, or an entire volume from a Snapshot copy by using the restore feature on the Volume / Health details page. - What resource pools are
Resource pools are groups of aggregates that are created by a storage administrator using Unified Manager to provide provisioning to partner applications for backup management. - Creating resource pools
You can use the Create Resource Pool dialog box to group aggregates for provisioning purposes. - Editing resource pools
You can edit an existing resource pool when you want to change the resource pool name and the description. - Viewing resource pools inventory
You can use the Resource Pools page to view the resource pool inventory and to monitor the remaining capacity for each resource pool. - Adding resource pool members
A resource pool consists of a number of member aggregates. You can add aggregates to existing resource pools to increase the amount of space available for secondary volume provisioning. - Removing aggregates from resource pools
You can remove aggregates from an existing resource pool: for example, when you want to use an aggregate for some other purpose. - Deleting resource pools
You can delete resource pools when they are no longer needed. For example, you might want to redistribute the member aggregates from one resource pool to several other resource pools, making the original resource pool obsolete. - Understanding SVM associations
Storage virtual machine (SVM) associations are mappings from a source SVM to a destination SVM that are used by partner applications for resource selection and secondary volume provisioning. - SVM and resource pool requirements to support storage services
You can better ensure conformance in partner applications if you observe some SVM association and resource pool requirements that are specific to storage services: for example, when you associate SVM and create resource pools in Unified Manager to support a protection topology in a storage service provided by a partner application. - Creating SVM associations
The Create Storage Virtual Machine Associations wizard enables partner protection applications to associate a source storage virtual machine (SVM) with a destination SVM for use with SnapMirror and SnapVault relationships. Partner applications use these associations at the time of initial provisioning of destination volumes to determine which resources to select. - Viewing SVM associations
You can use the Storage VM Associations page to view existing SVM associations and their properties and to determine if additional SVM associations are required. - Deleting SVM associations
You can delete SVM associations for partner applications to remove the secondary provisioning relationship between source and destination SVMs; for example, you might do this when the destination SVM is full and you want to create a new SVM protection association. - What jobs are
A job is a series of tasks that you can monitor using Unified Manager. Viewing jobs and their associated tasks enables you to determine if they have completed successfully. - Monitoring jobs
You can use the Jobs page to monitor job status and to view job properties such as storage service type, state, submitted time, and completed time to determine whether or not a job has successfully completed. - Viewing job details
After you start a job, you can track its progress from the Job details page and monitor the associated tasks for possible errors. - Aborting jobs
You can use the Jobs page to abort a job if it is taking too long to finish, is encountering too many errors, or is no longer needed. You can abort a job only if its status and type allow it. You can abort any running job. - Retrying a failed protection job
After you have taken measures to fix a failed protection job, you can use Retry to run the job again. Retrying a job creates a new job using the original job ID. - Description of Protection relationships windows and dialog boxes
You can view and manage protection-related details such as resource pools, SVM associations, and protection jobs. You can use the appropriate Health Thresholds page to configure global health threshold values for aggregates, volumes, and relationships.
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