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which fully describe the commands to be executed by the mass storage subsystem. To initiate an I/O request, the CPU has only to create a small data structure in memory, append it to a "send" queue, and if that is the first packet in the send queue, wake the MSCP controller. After the command has been
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Interrupts to the CPU (a costly operation) are not needed so long as further command packets remain in the command queue and the response queue is not in danger of over-flowing. I/O-space reads and writes to the MSCP controller, a less-expensive but still-costly operation, are similarly minimized.
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interconnects, it is a very inexpensive operation to ship storage requests around a VMScluster for remote execution; this greatly facilitates the creation of large-scale VMSclusters. The dependence upon in-memory packets and the minimization of interrupts and I/O-space reads and writes greatly
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hierarchical storage controller, the protocol quickly spread throughout the entire line of mass storage controllers built by DEC. The
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114:Learn how and when to remove this message
165:is an implementation of MSCP built on a
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856:Digital Storage Systems Interconnect
48:adding citations to reliable sources
930:Dynamically Redefined Character Set
184:Designed to minimize the amount of
876:Synchronous Backplane Interconnect
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215:MSCP Basic Disk Functions Manual
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1070:Maintenance Operations Protocol
205:facilitates remote operations.
63:"Mass Storage Control Protocol"
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960:Mass Storage Control Protocol
256:Digital Equipment Corporation
140:Digital Equipment Corporation
128:Mass Storage Control Protocol
1050:Digital Federal Credit Union
272:(founder and CEO, 1957–1992)
1094:Sequence and Batch Language
1055:Dynamic debugging technique
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1085:Record Management Services
871:Standard Disk Interconnect
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1119:The Ultimate Entrepreneur
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157:First implemented in the
782:DIGITAL Command Language
1108:Systems Research Center
1103:System Reference Manual
1075:On-line Debugging Tool
173:) stretch down to the
138:that was designed by
1065:Local Area Transport
823:National Replacement
44:improve this article
925:Digital Linear Tape
284:(VP of engineering)
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104:December 2009
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59:Find sources:
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29:This article
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1194:DEC hardware
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727:Digital UNIX
278:(co-founder)
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152:mass storage
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42:Please help
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737:Programming
450:Alpha 21464
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440:Alpha 21264
430:Alpha 21164
413:Alpha 21064
282:Gordon Bell
1183:Categories
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315:processors
263:Key people
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625:Operating
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707:VAX/VMS
702:TOPS-20
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627:systems
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190:packets
144:Maynard
134:) is a
88:scholar
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37:sources
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1021:Compaq
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886:Unibus
818:Hebrew
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388:Mariah
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955:LK421
950:LK201
866:Q-Bus
772:MUMPS
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752:DIBOL
675:RT-11
660:TSS/8
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126:The
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46:by
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