Hitachi 9960, 9900 Series Glossary, HDmS, Hitachi CruiseControl, Hitachi Dynamic Link Manager

Glossary

run concurrently. Reliability is enhanced with retry logic, alternate path routing, and restart from point of failure. Ease of use is provided by a Java-client interface, a system monitor, scheduling support, and remote control of client functions from OS/390®.

HDD

High-density disks. Used in the Lightning 9900™ Series.

HDmS

The Hitachi Data Systems Migration Service™ (HDmS) is a Hitachi Data Systems® professional service that helps users migrate data from existing systems to newly installed systems while minimizing the impact on mission-critical applications. HDmS features a four-phase approach that includes assessment, planning, migration, and post-migration support.

Hitachi CruiseControl™

CruiseControl™ automatically monitors, analyzes and moves logical volumes to eliminate “hot spots” within a Lightning 9900 storage system and provides load balancing to maintain predetermined performance levels.

Hitachi Dynamic Link Manager™

Hitachi Dynamic Link Manager™ is a family of software utilities that is server based and enhances RAID systems by providing automatic failover and load balancing from server-to-RAID channel connection failures. This product allows systems administrators to take advantage of the multiple paths on a Lightning 9900™ by adding redundant SCSI connections between data servers and RAID systems. Hitachi Dynamic Link Manager™ therefore provides increased reliability and performance. Supported platforms include AIX®, Sun Solaris™, and Windows NT/2000®.

Hitachi FlashAccess™

FlashAccess™ is a Hitachi feature that allows specified (usually high access) data sets to be “pegged” or permanently placed in cache memory so they are not managed by the data movement algorithms of the Freedom Storage® system. The Hitachi Flash Access™ feature in the Lightning 9900™ can be used for either S/390 or open systems. Hitachi Flash Access™ is a software utility in the Freedom 9000 Resource Manager™ suite that allows the creating, deletion, and monitoring of data managed by the Hitachi Flash Access™ software. See also Freedom 9000 Resource Manager™.

Hitachi Graph-Track™

Graph-Track™is a software utility in the Freedom 9000 Resource Manager™ suite that allows a robust set of system and network management utilities and provides graphical reports for Lightning 9900™ performance and availability and configuration management.

Hitachi Hi-Star™Architecture

At the heart of the Lightning 9900™ revolutionary design is the Hitachi Hi-Star™

Architecture, which provides multiple, redundant, non-blocking paths between the

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