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Download High Performance Servers by Architecture Technology Corpor. (Auth.) PDF

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By Architecture Technology Corpor. (Auth.)

Please be aware this can be a brief booklet. LANs have undergone phases. Early LANs hooked up asychronous terminals to minicomputers. With the appearance of the IBM computing device the point of interest on know-how replaced to that of computers hooked up to a few kind of 'file server'. After a couple of years, the conflict over dossier servers become a conflict of community working platforms. With the arrival of the buyer server version, and excessive functionality workstations, one course the conflict has been taking is to improve a excessive functionality server engine. the overall procedure during this enviornment is to aim to take away bottlenecks within the processing of carrier requests to some of the networks working. a number of consortiums a raffle capitalists have poured quantities of cash within the diversity of $20m into constructing the last word excessive functionality server. With Novell delivery millions of copies of NetWare 386 per thirty days, this profitable marketplace is set to endure severe long-term festival. This document describes the overall ways that may be used to enhance a excessive functionality server and a number of other of the foremost items within the quarter together with items from numerous initiate ventures

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When the operating system is first installed, it looks to see if it is running on a 386 or 486 chip. If installed on a 486 chip, a number of 486-specific instructions included in the operating system are used. 0 has allowed Novell to break the 100-connections-per-server limit of NetWare 286. 0 supports up to 250 simultaneous users per server. 0, has been designed to accommodate dramatic system growth. 0 server can support up to 32 terabytes (Tbytes) of disk storage, 4 Gbytes of random access memory, a maximum file size of 4 Gbytes, up to 100,000 concurrent open files and 25,000 concurrent NetWare Transaction Tracking System (TTS) transactions.

The one-line-cache eliminates non-cache-line-size transfers between the system 49 High-Performance Servers bus and the IOCH. Without the buffering of the OLC, each byte, word, or doubleword I/O bus transfer would require a corresponding system bus transfer; however, since the system bus is optimized for cacheline-sized transfers (32 bytes), using the bus for such smaller I/O transfers would waste a large amount of system bus bandwidth and thereby reduce the overall performance of the system. The OLC avoids this performance degradation by bundling individual byte, word, and doubleword transfers to/from the I/O bus into cache lines.

12 Enhanced IBM Connectivity The IBM connectivity enhancements provide a new functionality, strengthen SNA connectivity, embrace IBM Token-Ring, and increase performance. Token-Ring attach, Source Level Routing, and Token-Ring Bridging allow customers to use a single Token-Ring network for VINES as well as IBM specific functions. The specific enhancements are: 1. IBM 3174 Emulation/Token-Ring Attach: This enhancement allows a VINES server to communicate with an SNA host over Token-Ring through a 3174 or 3745/372X controller.

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