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IBM Z

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IBM Z
NameIBM Z
DeveloperInternational Business Machines Corporation
Familyz/Architecture
Released2017 (as naming for current line)
TypeMainframe computer
WebsiteIBM Systems

IBM Z

IBM Z is a family of enterprise mainframe computers produced by International Business Machines Corporation. It provides high-throughput transaction processing, large-scale virtualization, and integrated cryptographic capabilities for industries such as banking, telecommunications, and government. The platform is often deployed alongside software ecosystems and standards from vendors and consortia in finance, cloud, and security sectors.

Overview

The platform targets sectors including JPMorgan Chase, Bank of America, Verizon Communications, United States Department of Defense, and European Central Bank that require continuous availability, regulatory compliance, and secure data processing. Typical deployments integrate with products from Red Hat, SAP SE, Oracle Corporation, Microsoft Corporation, and Google Cloud for hybrid architectures. Key operational attributes are high I/O concurrency, fault-tolerant designs used by institutions such as New York Stock Exchange, NASDAQ, SWIFT, and national payment systems. Industry standards and consortia like ISO/IEC, PCI Security Standards Council, OpenGroup, and Linux Foundation influence interoperability and certification.

Architecture and hardware

The architecture implements a 64-bit instruction set and coherent multiprocessing cores designed by teams within International Business Machines Corporation that evolved from previous designs used by organizations such as NASA for mission-critical workloads. Hardware subsystems include channel I/O adapters, specialty processors, persistent memory, and crypto accelerators used by institutions like Mastercard, Visa Inc., and Federal Reserve System. Packaging and fabrication partnerships with foundries such as GlobalFoundries and equipment makers like Samsung Electronics and TSMC influence chip production. Cooling and power designs reference standards adopted by data centers run by Equinix, Digital Realty, and hyperscalers including Amazon Web Services.

Operating systems and software ecosystem

Supported operating systems span long-standing platforms and contemporary distributions, with deployments by enterprises using z/OS, z/VM, Linux on IBM Z, and z/VSE variants maintained by International Business Machines Corporation and open-source communities associated with The Linux Foundation and vendors like SUSE and Canonical Ltd.. Middleware and transaction monitors such as CICS, IMS (software), and Db2 integrate with application stacks from IBM WebSphere, Apache Software Foundation, Eclipse Foundation, and enterprise suites by SAP SE and Oracle Corporation. Development toolchains and language runtimes from IBM Developer, GitHub, Eclipse Foundation, and vendors like JetBrains support modern DevOps practices used in deployments by Accenture, Capgemini, and Deloitte.

Security and cryptography

Cryptographic functions leverage hardware security modules and integrated accelerators certified to standards maintained by National Institute of Standards and Technology, FIPS 140-2, and evaluation schemes like Common Criteria. Enterprise key management and hardware-rooted trust are used by financial firms such as Citigroup and UBS for transaction integrity and by government agencies including GCHQ and National Security Agency for classified workloads. The platform supports protocols and libraries interoperable with OpenSSL, PKCS#11, and standards from ISO/IEC JTC 1 and IETF for TLS and secure key exchange, enabling compliance with frameworks like PCI DSS and regional data protection authorities including European Commission directives.

Performance and virtualization

High consolidation ratios are achieved using hypervisors and virtualization layers like those developed by International Business Machines Corporation and communities around Xen Project and KVM integrations offered by Red Hat. Benchmarking by organizations such as SPEC and workload comparisons used by SAP SE and Oracle Corporation demonstrate strengths in throughput and latency for OLTP, batch processing, and analytics. Resource management and capacity planning tools employed by operators like Deutsche Bank and Barclays exploit virtualization technologies previously applied in cloud computing infrastructures at providers such as IBM Cloud and Microsoft Azure.

History and product evolution

Design lineage traces back through generations of mainframe development at International Business Machines Corporation, with milestones that intersect with events and institutions like the deployment of early systems for United States Internal Revenue Service and data-center transitions driven by organizations such as AT&T. Partnerships and competition involving Unisys, Fujitsu, and Hewlett-Packard shaped market dynamics. Adoption by major financial clearinghouses, national infrastructures, and global enterprises has driven incremental innovations in packaging, instruction-set extensions, and cryptographic integration, influenced by standards bodies like ISO, IEC, and regulatory authorities such as the Federal Reserve System and European Central Bank.

Category:Mainframe computers