Patent ID: 11874740
Assignee: DELL PRODUCTS L.P.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. A system comprising:
one or more processors; and
a memory comprising code stored therein that, when executed, performs a method comprising:
configuring a stretched volume from two volumes of two data storage systems configured as a cluster, wherein each of the two volumes is included in a different one of the two data storage systems, wherein the two volumes configured as the stretched volume are exposed to a host as a same logical volume having a same first identifier over a plurality of paths from the two data storage systems, wherein the two volumes are configured for bidirectional synchronous replication between the two data storage systems whereby a write directed to the stretched volume received at any one of the two data storage systems is synchronously replicated to the other one of the two data storage systems of the cluster, wherein the two data storage systems include a first data storage system and a second data storage system, and wherein the two data storage systems are in communication with a witness; and
responsive to detecting an occurrence of a trigger condition, triggering first polarization processing for the first data storage system, wherein said first polarization processing includes:
determining that the first data storage system is unhealthy; and
responsive to determining that the first data storage system is unhealthy, performing first processing including:
declaring that the first data storage system is a loser of polarization without contacting the witness;
disabling the bidirectional synchronous replication between the two data storage systems;
the first data storage system rejecting received I/Os; and
setting paths to the first data storage system over which one or more volumes including the stretched volume are exposed to unavailable.