ETERNUS AB/HB Series SANtricity OS Dynamic Disk Pools Description

This technical report outlines the features and functionalities of Dynamic Disk Pools (DDP) technology within the ETERNUS AB/HB series storage systems. It describes how DDP technology enhances data protection and management by significantly reducing RAID rebuild times, which can take several days with traditional methods. The report details the key attributes of DDP, including simplified management through distributed hot spare capacity, predictable performance via a deterministic algorithm, and reduced exposure to multiple disk failures. It also explains the operational aspects when a drive fails, emphasizing the integrated preservation capacity of the pool that eliminates the need for dedicated hot spares. The document provides configuration guidelines, best practices for pool setup, and a technical overview of data layout and management. Additionally, it includes a glossary of terms and discusses the intended use of the information for Fujitsu customers and partners.