This section gives examples of the following replication functionality:
- Local Replication with SnapVX
- Snapshot Policies
- Remote Replication with SRDF
- Remote Replication with SRDF Metro Smart DR
In this example a new storage group is created with a single 1GB volume. A snapshot name is generated using the current time so it can be easily identified, and the storage group snapshot is created. The operation is verified by querying for a list of snapshots for a given storage group and confirming the snapshot we created is present in that list.
code/replication-snapshot_create.py
This example will create a storage group with a volume, create a snapshot of that storage group and link the snapshot to a new storage group. This is a typical workflow for provisioning a dev environment and making a copy available.
code/replication-snapshot_link.py
The Snapshot policy feature provides snapshot orchestration at scale (1,024 snaps per storage group). The feature simplifies snapshot management for standard and cloud snapshots.
Snapshots can to be used to recover from data corruption, accidental deletion or other damage, offering continuous data protection. A large number of snapshots can be difficult to manage. The Snapshot policy feature provides an end to end solution to create, schedule and manage standard (local) and cloud snapshots.
For full detailed information on snapshot policies in Unisphere for PowerMax please consult the official Unisphere for PowerMax online help guide.
In the example below a new snapshot policy is created, modified, then deleted.
code/replication-snapshot_policy.py
This allows the user to query snapshot policy compliance over a period of time. Last week, last four weeks, epoch to/from, human readable to/from are supported.
For full detailed information on snapshot policies in Unisphere for PowerMax please consult the official Unisphere for PowerMax online help guide.
In the example below, snapshot policy compliance over the last week is queried.
code/replication-snapshot-policy-compliance.py
This example will create a storage group on the PowerMax array with some volumes. Once the storage group has been created it will protect the volumes in the storage group to a remote array using SRDF/Metro, providing Active/Active business continuity via Symmetrix Remote Data Facility (SRDF).
code/replication-srdf_protection.py
SRDF/Metro Smart DR is a two region High-Availability (HA) Disaster Recovery (DR) solution. It integrates SRDF/Metro and SRDF/A, enabling HA DR for an SRDF/Metro session. By closely coupling the SRDF/A sessions on both sides of an SRDF/Metro pair, SRDF/Metro Smart DR can replicate to a single DR device.
SRDF/Metro Smart DR environments are identified by a unique name and contain three arrays (MetroR1, MetroR2, and DR). For SRDF/Metro Smart DR, arrays must be running PowerMaxOS 5978.669.669 or higher.
This example will create a storage group on the PowerMax array with some volumes. Once the storage group has been created it will protect the volumes in the storage group to a remote array using SRDF/Metro DR.
Note once Metro DR is setup, the environment is controlled exclusively by the environment name. SRDF Metro and SRDF/A replication can not be controlled by standard Replication Calls without first deleting the Metro DR environment.
For more information on SRDF/Metro Smart DR, please refer to Dell EMC Solutions Enabler SRDF Family CLI user guide available on https://support.dell.com
code/replication-metro_dr.py