StorageWorks HSJ40 Array Controller

The StorageWorks HSJ40 Array Controller is designed for VAX and Alpha AXP OpenVMS environments, offering an intelligent, modular storage solution that integrates SCSI-2 devices into CI (Computer Interconnect) clusters. Key features include support for up to 36 storage devices per controller, built-in RAID 0, and compatibility with host-based RAID 1 (Volume Shadowing). The controller provides high-throughput, fault-tolerant I/O by supporting dual-path configurations, ensuring data availability even if one controller fails. Additionally, the system includes scalable read cache (16 MB to 32 MB), flexible configuration options, and preconfigured entry subsystems for rapid deployment. The HSJ40 acts as a core, upgradeable element of Digital’s modular storage architecture to meet evolving performance and capacity requirements.