MaSSIVE(trade mark): the Mass Storage System IV Enterprise

Article Abstract:

The National Center for Atmospheric Research's (NCAR) Scientific Computing Division (SCD) is developing a fourth-generation mass storage system, the Mass Storage System IV Enterprise. The MaSSIVE(trade mark) project will replace the NCAR's existing mainframe-based mass storage system (MSS) and provide a file system service to teraflops computing systems. MaSSIVE will stage entire file systems from archival storage onto online storage devices and provide clients with raw block access to the staged file system. The MSS complies with the IEEE Mass Storage System Reference Model. The system consists of co-operating processes that are distributed across a supermicrocomputer network. A custom device driver will implement the client interface to a file system and permit I/O to MaSSIVE online storage. Prototypes for portions of the MSS are under development.

Electronic computers, Information management, Supercomputers, Supercomputer, Networks, Fourth Generation, Archival Storage, United States. National Center for Atmospheric Research

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DASD trends: cost, performance, and form factor

Article Abstract:

The prices of magnetic disks are decreasing at a slower rate than those of semiconductor memories. Industry analysts continue to forecast the replacement of magnetic disks by semiconductor memories that provide higher performance at a lower price, but advances in disk technology may stave off the crossover. The current trends in increased performance, reliability and price of magnetic disks compare favorably with competing technologies and show that the technology will continue to be useful in the foreseeable future. The use of low-cost logic and memory to enhance performance and function in the disk subsystem will be the key to the survival of magnetic disk technology, along with the adaptation of the technology to meet the changing storage requirements of the industry.

Performance improvement (Computers), Performance/Cost Relationship, Magnetic Disks, Performance Improvement, Direct Access Storage Devices

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The emerging role of flexible media

Article Abstract:

Changes in tape-based data storage subsystems during the 1980s corresponded with the rapid evolution of computer systems. The technical advances of several families of products are described according to their market segments. The corresponding technological advances in magnetic tape design and its manufacturing processes are reviewed. Mechanical and tribological properties are considered of equal importance to the improvements in electromagnetic performance in meeting the requirements of tape products. New tapes are now designed to optimize electromagnetic, mechanical and tribological performance. The design parameters for these properties are discussed in detail.

Industrial research, Magnetic tapes, Magnetic storage media, Magnetic Media, Research and Development, Tape Storage, Tape Drive, Tape drives

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