Infinidat Ltd.

Ayelet Shani

Yechiel Yochai

Efraim Zeidner

A method for controlling multiple replication processes that includes allocating, by a local storage system and for each replication process, local resources for performing local operations that comprise transmitting remote replication content to a remote storage system; the allocating is responsive to a state of transmission of the replication content and a maximal local storage system allocation threshold; allocating, by the remote storage system and for each replication process, remote resources for performing remote operations that comprise handling the replication content transmitted from the local storage system; the allocating is responsive to a load associated with the handling of the replication content, and a maximal remote storage system allocation threshold; and executing each replication process by the replication process local and remote storage systems resources.

Flow control in remote replication

A method for replicating a local storage entity to provide a remote storage entity, the method may include receiving, by a local storage site, after an occurrence of a replication failure, after-failure remote storage site difference information indicative of differences between (i) a certain point in time version of the remote storage entity and (ii) an after-failure point in time version of the remote storage entity; calculating, by the local storage site, after the occurrence of the replication failure, after-failure local storage site difference information indicative of differences between (i) a certain point in time version of the local storage entity and (ii) an after-failure point in time version of the local storage entity; and sending, by the local storage site to the remote storage site, local storage entity portions listed in at least one of the after-failure remote storage site difference information and to the after-failure local storage site difference information, during an after-failure replication cycle; and wherein the certain point in time is associated with a last successful replication cycle that preceded the replication failure.

Resynchronization of a remote storage site after replication failure

A method for generating remote replicates of a logical volume at a remote site, the method comprises performing a plurality of replication cycles for generating a plurality (N) of points in time replicates of the logical volume at the remote site. Wherein for each positive integer n that ranges between 2 and N, a performing of a n'th replication cycle comprises: calculating in parallel and by multiple computerized resources of a storage system, multiple n'th point in time differences of multiple subsets of the logical volume; wherein n'th point in time differences of different subsets are calculated by different computerized resources; wherein a n'th point in time difference of a subset is a difference between an (n&#x2212;1)'th point in time content of the subset and an n'th point in time content of the subset; and sending, in parallel, the multiple n'th point in time differences to the remote site.

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Moshav Herev Le'et, Israel

Ayelet Shani