Volume Shadowing for OpenVMS

This Software Product Description (SPD) covers Volume Shadowing for OpenVMS (Version 7.0) on VAX and Alpha processors. Volume Shadowing implements RAID Level 1, maintaining redundant copies of data across sets of disks (shadow sets). It provides high data availability by protecting against media deterioration or hardware failures. Key features include transparent operation for end-users, support for VMScluster configurations, and automated repair of unreadable data on supported disks. The document also outlines hardware and software requirements, configuration limits, licensing options (capacity or per-disk), and compatibility guidelines for mixed-architecture VMSclusters.