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Status Delivered
Workspace PowerVC
Created by Guest
Created on Aug 7, 2017

RELATED IDEAS

Enhance Zoning Algorithm in PowerVC to prevent ISL hops

See this idea on ideas.ibm.com

This enhancement is based on using PowerVC 1.3.3 in our environment that uses PowerVM, dual VIOS (each with a Fibre Channel Port to Fabric A and B), Cisco FC Switches (multiple switches with ISL between) and IBM SVC clustered storage subsystem. Currently when PowerVC does zoning for NPIV attached disks from an SVC, the target port selection is done by using a hash algorithm to spread usage across available targets from each side of an IO group within a fabric. In a larger fabric that includes multiple core and edge switches this can lead to selection of ports that cause undesired ISL hops between the VIOS and the SVC IO Group. Currently there is no logic in PowerVC to check for coexistence of VIOs port and SVC port within the same Domain ID within the fabric. Ideally we would like PowerVC to check and use the least number of hops and continue spread of port usage to keep a balanced load.

Idea priority High

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