Volume Shadowing for OpenVMS

This Software Product Description (SPD) details Volume Shadowing for OpenVMS, a system-integrated product for VAX and Alpha processors. It provides high data availability by implementing RAID Level 1, or disk mirroring, allowing data to remain accessible despite media, controller, or device failures. The software is transparent to users and applications, managing shadow sets of up to three compatible disks. The document covers configuration, hardware/software requirements, licensing models (capacity-based or per-disk), and compatibility within OpenVMS clusters.