DECsystem was a line of server computers from Digital Equipment Corporation. They were based on MIPS architecture processors and ran DEC's version of the UNIX operating system, called Ultrix. They ranged in size from workstation-style desktop enclosures to large pedestal cabinets.
Digital Equipment Corporation (DEC), using the trademark Digital, was a major American company in the computer industry from the 1950s to the 1990s.
MIPS is a reduced instruction set computer (RISC) instruction set architecture (ISA) developed by MIPS Computer Systems.
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
The DECSYSTEM name was also used for later models of the PDP-10, namely the DECSYSTEM-10 and DECSYSTEM-20 series.
Digital Equipment Corporation's PDP-10, later marketed as the DECsystem-10, was a mainframe computer family manufactured beginning in 1966; it was discontinued in 1983. 1970s models and beyond were marketed under the DECsystem-10 name, especially as the TOPS-10 operating system became widely used.
The DECSYSTEM-20 was a 36-bit Digital Equipment Corporation PDP-10 mainframe computer running the TOPS-20 operating system.
Identical to the DECstation 3100, but was intended to be used as a multiuser system. It was announced in early May 1989 at the UniForum exhibition in San Francisco. It was shipped in June 1989. Code name PMAX.
Rebranded Personal DECstation 5000 Series without any graphics. Code name MAXINE.
Rebranded DECstation 5000 Model 100 Series without any graphics. Codename 3MIN.
Rebranded DECstation 5000 Model 200 Series without any graphics. Code name 3MAX. (5000/260 3MAX+)
A desktop uniprocessor entry-level server. It replaced the DECsystem 3100. Code name MIPSMATE.
A pedestal uniprocessor system based on the Q-Bus. It shared many hardware options with the 3x00-series MAYFAIR VAXes, including TK70 tape drive, MS650-BA memory and DSSI disk drives. SCSI was not available except with third party add in hardware. The unit shipped with a MicroVAX diagnostic processor, which would run similar ROM diagnostics to the MicroVAX series, as well as boot the tape based MicroVAX Diagnostic TK70 tape. Once the console transferred control of the computer to the MIPS processor the MicroVAX sat essentially unused until the next boot. Code name MIPSFAIR.
A pedestal uniprocessor system based on the Q-Bus. It replaced the DECsystem 5400. The 5500 came with native SCSI support, as well as support for DSSI disk drives. Code name MIPSFAIR-2.
The DECsystem 5500 is shipped in a BA430 enclosure, which provides a 12-slot backplane and room for four mass storage devices. The base system contains the following:
* A KN220-AA module set. This consists of a KN220 I/O module in slot 1 and a KN220 CPU module in slot 2. The CPU module contains: o 30 MHz R3000 CPU with R3010 FPU. o 512 kBytes of Prestoserve (NFS accelerator) battery backed RAM. The I/O module contains: o Q22-bus interface o SGEC Second Generation Ethernet Controller o DSSI Digital Storage System Interconnect port o SII-based SCSI port. * From 1 to 4 MS220-AA 32MB memory modules, installed in slots 3 through 7.
The DECsystem 5800 Series are high-end multiprocessor systems. The series comprised the DECsystem 5810, 5820, 5830, and 5840, with the third digit referring to the number of processors. These systems can be considered to be the MIPS/RISC alternatives of the VAX 6000 operating the XMI and BI bus.The 5810 and 5820, using 25 MHz R3000 microprocessors and R3010 floating-point coprocessors, were introduced on 11 July 1989. Code name ISIS.
The DECsystem 5900 and DECsystem 5900/260 are rack-mounted DECstation 5000 Model 240 and DECstation Model 260 workstations, respectively, positioned as mid-range servers by Digital. The DECsystem 5900 was introduced in early December 1991.Both models were discontinued on 28 January 1994. Their intended replacement was the DEC 3000 Model 800S AXP packaged in a similar rack-mountable enclosure.
The DECstation system module is repackaged in a CPU drawer, which is mounted in a rack with a mounting kit which permits the drawer to be slid in and out. The CPU module also contained an integrated TURBOchannel Extender, the power supply and a blower, which cooled the system. However, as the system module that these systems use does not feature multiprocessing capabilities, the presence of two CPU drawers in a rack simply meant that there were two separate systems. The mass storage drawers, in such a case, would be divided between the CPU drawers, with a minimum of one per a CPU drawer.
There are two models of mass storage drawers. One model may contain one to four 5.25-inch full-height non-removable, one 5.25-inch full-height removable or non-removable and two 5.25-inch half-height removable devices. The other model may contain one to five 5.25-inch full-height non-removable, one 5.25-inch removable and two 5.25-inch half-height removable devices. In both models, a 400 W power supply is located at the rear of the drawer.
The H9A00 enclosure, a 19-inch rack, contains a minimum of one CPU drawer and one mass storage drawer. A power controller at the bottom of the enclosure distributed power to the CPU and mass storage drawers. The rack can contain a maximum of two CPU drawers and four mass storage drawers.
The DECsystem 5900 has a width of 61 cm (24 in), a height of 170 cm (66.9 in), a depth of 86.4 cm (34 in) and a weight of 265 to 485 kg (480 to 1,070 lb) depending on the configuration.
VAX is a discontinued instruction set architecture (ISA) developed by Digital Equipment Corporation (DEC) in the mid-1970s. The VAX-11/780, introduced on October 25, 1977, was the first of a range of popular and influential computers implementing that architecture.
The Acorn Archimedes is a family of personal computers designed by Acorn Computers Ltd in Cambridge (England) and sold in the late-1980s to mid-1990s, Acorn's first general-purpose home computer based on its own ARM architecture. The first Archimedes was launched in 1987.
Ultrix is the brand name of Digital Equipment Corporation's (DEC) discontinued native Unix operating systems for the PDP-11, VAX and DECstations.
Pyramid Technology Corporation was a computer company that produced a number of RISC-based minicomputers at the upper end of the performance range. It was based in the San Francisco Bay Area of California
The DECstation was a brand of computers used by DEC, and refers to three distinct lines of computer systems—the first released in 1978 as a word processing system, and the latter two both released in 1989. These comprised a range of computer workstations based on the MIPS architecture and a range of PC compatibles. The MIPS-based workstations ran Ultrix, a DEC-proprietary version of UNIX, and early releases of OSF/1.
A blade server is a stripped-down server computer with a modular design optimized to minimize the use of physical space and energy. Blade servers have many components removed to save space, minimize power consumption and other considerations, while still having all the functional components to be considered a computer. Unlike a rack-mount server, a blade server needs a blade enclosure, which can hold multiple blade servers, providing services such as power, cooling, networking, various interconnects and management. Together, blades and the blade enclosure, form a blade system. Different blade providers have differing principles regarding what to include in the blade itself, and in the blade system as a whole.
TURBOchannel is an open computer bus developed by DEC by during the late 1980s and early 1990s. Although it was open for any vendor to implement in their own systems, it was mostly used in Digital's own systems such as the MIPS-based DECstation and DECsystem systems, in the VAXstation 4000, and in the Alpha-based DEC 3000 AXP. Digital abandoned the use of TURBOchannel in favor of the EISA and PCI buses in late 1994, with the introduction of their AlphaStation and AlphaServer systems.
The VAXstation was a family of workstation computers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA). VAX stood for Virtual Address EXtension.
The Massbus is a high-performance computer input/output bus designed in the 1970s by the Digital Equipment Corporation of Maynard, Massachusetts.
The MicroVAX was a family of low-cost minicomputers developed and manufactured by Digital Equipment Corporation (DEC). The first model, the MicroVAX I, was introduced in 1983. They used processors that implemented the VAX instruction set architecture (ISA) and were succeeded by the VAX 4000.
DEC 3000 AXP was the name given to a series of computer workstations and servers, produced from 1992 to around 1995 by Digital Equipment Corporation. The DEC 3000 AXP series formed part of the first generation of computer systems based on the 64-bit Alpha AXP architecture. Supported operating systems for the DEC 3000 AXP series were DEC OSF/1 AXP and OpenVMS AXP.
The IBM Storage product portfolio includes disk, flash, tape, NAS storage products, storage software and services. IBM’s approach is to focus on data management.
The DEC 4000 AXP is a series of departmental server computers developed and manufactured by Digital Equipment Corporation introduced on 10 November 1992. These systems formed part of the first generation of systems based on the 64-bit Alpha AXP architecture and at the time of introduction, ran Digital's OpenVMS AXP or OSF/1 AXP operating systems.
The DEC 7000 AXP and DEC 10000 AXP are a series of high-end multiprocessor server computers developed and manufactured by Digital Equipment Corporation, introduced on 10 November 1992. These systems formed part of the first generation of systems based on the 64-bit Alpha AXP architecture and at the time of introduction, ran Digital's OpenVMS AXP operating system, with DEC OSF/1 AXP available in March 1993. They were designed in parallel with the VAX 7000 and VAX 10000 minicomputers, and are identical except for the processor module(s) and supported bus interfaces. A field upgrade from a VAX 7000/10000 to a DEC 7000/10000 AXP was possible by means of swapping the processor boards.
The VAX 4000 was a family of low-end minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using microprocessors implementing the VAX instruction set architecture (ISA). The VAX 4000 succeeded the MicroVAX family. It was the last family of low-end VAX systems, as the platform was discontinued by Compaq.
The VAXft was a family of fault-tolerant minicomputers developed and manufactured by Digital Equipment Corporation (DEC) using processors implementing the VAX instruction set architecture (ISA). "VAXft" stood for "Virtual Address Extension, fault tolerant". These systems ran the OpenVMS operating system, and were first supported by VMS 5.4. Two layered software products, VAXft System Services and VMS Volume Shadowing, were required to support the fault-tolerant features of the VAXft and for the redundancy of data stored on hard disk drives.
The Digital Storage Systems Interconnect (DSSI) is a computer bus developed by Digital Equipment Corporation for connecting storage devices and clustering VAX systems. It was designed as a smaller and lower-cost replacement for the earlier DEC Computer Interconnect that would be more suitable for use in office environments. DSSI formed the basis for the later SCSI standard.
BladeSystem is a line of blade server machines from Hewlett Packard Enterprise that was introduced in October 2004.
IBM Storwize systems are virtualizing RAID computer data storage systems with raw storage capacities up to 32PB. Storwize is based on the same software as IBM SAN Volume Controller (SVC).
An asymmetric multiprocessing (AMP) system is a multiprocessor computer system where not all of the multiple interconnected central processing units (CPUs) are treated equally. For example, a system might allow only one CPU to execute operating system code or might allow only one CPU to perform I/O operations. Other AMP systems might allow any CPU to execute operating system code and perform I/O operations, so that they were symmetric with regard to processor roles, but attached some or all peripherals to particular CPUs, so that they were asymmetric with respect to the peripheral attachment.