PC-based IBM mainframe-compatible systems: Difference between revisions

Revision as of 20:43, 29 January 2021

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===S/390 Integrated Server===

[[File:IBM S390 Integrated Server (29884471226).jpg|thumb|Two S/390 IS (onin front)]]

The S/390 Integrated Server (aka S/390 IS) is a mainframe housed in a comparably small case (HxWxD are 82 x 52 x 111 cm). It became available from November 1998. It is intended for customers who do not require the I/O bandwidth and performance of the [[Multiprise 3000|S/390 Multiprise 3000]] (which has the same size). Only 256 MB of ECC Memory and a single CMOS main processor (performance about 8 MIPS) are used; the S/390 CPU used in the Integrated Server is in fact the P/390 E-card. A [[Pentium II]] is used as IOSP (I/O Service Processor). It supports four [[ESCON]] and to four parallel channels. Standard PCI and ISA slots are present. A maximum of 255 GB internal harddisks are supported (16x 18GB HDs, with 2x HDs for redundancy). The supported OSs are OS/390, MVS/ESA, VM/ESA and VSE/ESA.