Storage management system and method

A computer program product residing on a non-transitory computer readable medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:

• maintaining an application-layer, active-active relationship between a first site and a second site within a storage system during a normal operation mode;
• sensing the storage system entering a degraded mode due to the first site of the storage system going offline;
• in response to entering the degraded mode, processing write requests and read requests on the second site;
• sensing the storage system entering a resynchronization mode due to the first site of the storage system returning online;
• and
• in response to entering the resynchronization mode, maintaining a block-layer, active-active relationship between the first site and the second site within the storage system, wherein maintaining a block-layer active-active relationship includes:
• intercepting write requests directed to the first site and redirecting those requests to the second site for processing on the second site only while the first site is being resynchronized,
• exposing, via a virtualized storage platform, a logical unit as a storage target within each of the first site and the second site, wherein each logical unit is configured to appear identical to both the first site and the second site, and
• providing, in response to a read request, a most current version of the data from one of the logical units of the first site and the second site.

A computing system including a processor and memory configured to perform operations comprising:

• maintaining an application-layer, active-active relationship between a first site and a second site within a storage system during a normal operation mode;
• sensing the storage system entering a degraded mode due to the first site of the storage system going offline;
• in response to entering the degraded mode, processing write requests and read requests on the second site;
• sensing the storage system entering a resynchronization mode due to the first site of the storage system returning online;
• and
• in response to entering the resynchronization mode, maintaining a block-layer, active-active relationship between the first site and the second site within the storage system, wherein maintaining a block-layer active-active relationship includes:
• intercepting write requests directed to the first site and redirecting those requests to the second site for processing on the second site only while the first site is being resynchronized,
• exposing, via a virtualized storage platform, a logical unit as a storage target within each of the first site and the second site, wherein each logical unit is configured to appear identical to both the first site and the second site, and
• providing, in response to a read request, a most current version of the data from one of the logical units of the first site and the second site.