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.
===Fujitsu PC-based mainframessystems===
Fujitsu offeredoffers two PC-compatiblebased systems that mademake up the lower end of Fujitsu's S/390-based [[BS2000]] mainframe product line.<ref>[https://globalsp.ts.fujitsu.com/dmsp/docs/wp_s175_s210_business-server.pdf]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The SQ100 wasis the slower configuration, using dual-core 2.93{{nbsp}}GHz [[Xeon#Tigerton|Intel Xeon E7220]] processors, and wasis capable of up to 200RPF of performance.<ref>[https://globalsp.ts.fujitsu.com/dmsp/docs/ds_sq100-businessserver.pdf]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The SQ200 usedwas introduced more recently, uses six-core 2.66{{nbsp}}GHz [[Xeon#6500/7500-series "Beckton"|Xeon X7542]] processors, and hadhas performance of up to 700RPF.<ref>[https://globalsp.ts.fujitsu.com/dmsp/docs/ds-sq200-businessserver-em-en.pdf]{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> All [[Intel 64]]-based BS2000 mainframes couldcan run Linux or Windows in separate partitions. Fujitsu madealso continues to make custom S/390-native processors and mainframe hardware for the high end of its BS2000 line.<ref>{{cite web|url=http://ts.fujitsu.com/products/bs2000/s_series/s210.html |title=Business Server S210 - Fujitsu Technology Solutions |publisher=Ts.fujitsu.com |date= |accessdate=2012-06-07}}</ref>
