Automated expansion and reduction of replicated data sets

A system comprising:

• a processor;
• and
• a memory comprising code stored thereon that, when executed, performs a method of modifying an application data set comprising:
• receiving a request to modify a storage group of one or more logical devices used by an application;
• and
• performing first processing that modifies, in accordance with the request, the storage group and an existing remote replication configuration, wherein the first processing includes:
• verifying that the one or more logical devices of the storage group are protected by remote replication performed in accordance with the existing remote replication configuration;
• analyzing the existing remote replication configuration and generating analysis information;
• performing, in accordance with the analysis information and the request, a first modification to the existing remote replication configuration;
• and
• performing, in accordance with the request, a second modification to the storage group performing, in accordance with the request, a second modification to the storage group, wherein the storage group is included in a first data storage system and the existing remote replication configuration is used in connection with remotely replicating the one or more logical devices of the storage group to a second data storage system including a second storage group of one or more other logical devices, wherein the storage group and the second storage group are included in a first replication group, wherein the first replication group includes one or more remote replication device pairs each including one logical device from the storage group and a corresponding logical device from the second storage group, and wherein the corresponding logical device of the second storage group of the second data storage system is configured as a remote replica of the one logical device of the storage group of the first data storage system.

A non-transitory computer readable medium comprising code stored thereon that, when executed, performs a method of modifying an application data set comprising:

• receiving a request to modify a storage group of one or more logical devices used by an application;
• and
• performing first processing that modifies, in accordance with the request, the storage group and an existing remote replication configuration, wherein the first processing includes:
• verifying that the one or more logical devices of the storage group are protected by remote replication performed in accordance with the existing remote replication configuration;
• analyzing the existing remote replication configuration and generating analysis information;
• performing, in accordance with the analysis information and the request, a first modification to the existing remote replication configuration;
• and
• performing, in accordance with the request, a second modification to the storage group, wherein the storage group is included in a first data storage system and the existing remote replication configuration is used in connection with remotely replicating the one or more logical devices of the storage group to a second data storage system including a second storage group of one or more other logical devices, wherein the storage group and the second storage group are included in a first replication group, wherein the first replication group includes one or more remote replication device pairs each including one logical device from the storage group and a corresponding logical device from the second storage group, and wherein the corresponding logical device of the second storage group of the second data storage system is configured as a remote replica of the one logical device of the storage group of the first data storage system.