Dell Products Inc.

Emc IP Holding Company LLC

Yuval Peleg Lieblich

Rivka Mayraz Matosevich

Ziv Dor

Roi Tagar

Eli Luboshitz

Gil Ben Zeev

Amir Aloosh

Eyal Brami

Techniques are provided for generating host connectivity plans with load balancing and resiliency. One method comprises obtaining a number of storage system target ports needed for a given host; identifying available target ports in the storage system and an input-output (IO) target component associated with each available target port; and calculating the host connectivity plan until the host connectivity plan includes the obtained number of target ports by: (i) selecting at least one IO target component not already in the host connectivity plan that satisfies a resiliency policy and/or a load balancing policy; (ii) selecting at least one target port associated with the selected at least one IO target component and (iii) adding the selected at least one target port to the host connectivity plan. The resiliency policy may require connectivity without a single point of failure. The load balancing policy may specify that the IO target components serve a substantially equal IO load.

Generation of host connectivity plans with load balancing and resiliency

A replicated state cluster is provided that employs a standby node state assessment during a leadership transition. One method, by a first standby node, comprises monitoring communications from a first cluster leader, wherein the first cluster leader and the first standby node are members of a replicated state cluster; obtaining a designation as a second cluster leader of the replicated state cluster in response to the first cluster leader becoming unavailable; and assessing a state of an additional standby node of the replicated state cluster within a time period after the designation, wherein the additional standby node is available as a candidate leader of the replicated state cluster during the time period when the state of the additional standby node is valid based on one or more validity criteria, wherein the state comprises one or more results of one or more write operations generated by an application.

Replicated state cluster with standby node state assessment during leadership transition

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Haifa, Israel

Yuval Peleg Lieblich