Implementing Selective Write Grouping in Software-Defined Storage for Enhanced Energy Savings

Explore a technical conference talk that examines the implementation of selective write-grouping in software-defined storage systems and its comparison to Popular Data Concentration approaches. Learn how write-grouping operations, compatible with both SMR and CMR disks using erasure coding, can achieve up to 43% energy savings by limiting write operations to specific drive subsets. Discover how this approach improves upon PDC by eliminating the staging phase and enabling direct data partitioning. Gain insights into the innovative "diagonal" algorithm for rebalancing write group data during capacity expansion and DR events. Master the intricacies of power optimization, scaling challenges, and performance considerations in SDS environments through this 51-minute presentation delivered by Piotr Modrzyk and David Gerstein from Leil Storage at SNIA SDC 2024.