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Data Facility Storage Management Subsystem [a] (DFSMS) is a central component of IBM's flagship operating system z/OS. It includes access methods, utilities and program management functions. It includes access methods, utilities and program management functions.
An example of primary storage. 15 GB PATA hard disk drive (HDD) from 1999. When connected to a computer it serves as secondary storage. 160 GB SDLT tape cartridge, an example of off-line storage. When used within a robotic tape library, it is classified as tertiary storage instead. Read/Write DVD drive with cradle for media extended
The Storage Management Initiative Specification, commonly called SMI-S, is a computer data storage management standard developed and maintained by the Storage Networking Industry Association (SNIA). It has also been ratified as an ISO standard. [ 1 ]
A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage.SANs are primarily used to access data storage devices, such as disk arrays and tape libraries from servers so that the devices appear to the operating system as direct-attached storage.
Data storage is the recording (storing) of information in a storage medium. Handwriting, phonographic recording, magnetic tape, and optical discs are all examples of storage media. Biological molecules such as RNA and DNA are considered by some as data storage. [1] [2] Recording may be accomplished with virtually any form of energy. Electronic ...
A direct-access storage device (DASD) (pronounced / ˈ d æ z d iː /) is a secondary storage device in which "each physical record has a discrete location and a unique address". The term was coined by IBM to describe devices that allowed random access to data, the main examples being drum memory and hard disk drives . [ 1 ]
1971 - StorageTek introduces the 3400 tape storage device. 1973 - StorageTek's disk division is founded. 1974 - StorageTek's first 3600 tape drive ships. 1975 - StorageTek ships the first 8000 Super Disk and announces the 8350 disk subsystem. 1978 - StorageTek develops the first solid-state disk. 1984 - StorageTek develops the first intelligent ...
Virtual Storage Access Method (VSAM) [1] is an IBM direct-access storage device (DASD) file storage access method, first used in the OS/VS1, OS/VS2 Release 1 (SVS) and Release 2 (MVS) operating systems, later used throughout the Multiple Virtual Storage (MVS) architecture and now in z/OS.