The Integrated Cluster Bus for the IBM S/390 Parallel Sysplex

Gregg, T. A.; Pandey, K.; Errickson, R. K.

doi:10.1147/rd.435.0795

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…In the eServer z990, mSTI is used on the backplane of the I/O subsystem in addition to providing sysplex connectivity to legacy zSeries servers [11,12]. The mSTI links are also known as the secondary STI links.…”

Section: Enhanced Self-timed Interface (Esti)mentioning

confidence: 99%

The structure of chips and links comprising the IBM eServer z990 I/O subsystem

Chencinski¹,

Becht²,

Bubb³

et al. 2004

IBM J. Res. & Dev.

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The performance of large servers is to a high degree determined by their I/O subsystems. In the z990 server, nearly all of the components in the I/O path have been considerably improved in performance, capability, and cost. A 2-GB/s enhanced self-timed interface (eSTI) was introduced which is capable of absorbing the ever-increasing data rates of modern high-speed adapters. The I/O bandwidth available from a single node (three memory bus adapter, or MBA, chips, each with four eSTI ports) now equals 48 GB/s. As a consequence, both the MBA chip and the STI multiplexer switch (STI switch) chip had to be completely redesigned. In addition to these two chips, this paper describes the eSTI design itself and the Sweep chip, which integrates the function of four bidirectional adapter chips, one switch chip, and a clock chip.

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Section: Enhanced Self-timed Interface (Esti)mentioning

confidence: 99%

The structure of chips and links comprising the IBM eServer z990 I/O subsystem

Chencinski¹,

Becht²,

Bubb³

et al. 2004

IBM J. Res. & Dev.

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“…The next improvement in coupling links, ICB-2 [6], was introduced in 1998. The ICB-2 designation is derived from the fact that ICBs use command set 2, the same as the one used for ISC-2.…”

Section: Integrated Cluster Bus 2 (Icb-2)mentioning

confidence: 99%

Coupling I/O channels for the IBM eServer z900: Reengineering required

Gregg

Errickson

2002

IBM J. Res. & Dev.

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The IBM eServer z900 introduces new Parallel Sysplex ® coupling channels that satisfy evolving requirements in a way that minimizes product and development costs. Their design also provides backward compatibility with earlier S/390 ® models, spans all three coupling channel design points, and anticipates future end-of-life technology issues. The original intersystem channel (ISC) design was improved, and new features added, but the core chips were retained. This paper describes the efforts that led to the improved design.

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“…New on G5 is the Integrated Cluster Bus (ICB), which provides a dramatic reduction in failure rate by incorporating the ISC I/O channel adapter function into the hub chip [18]. It preserves the data integrity and fault tolerance of the S/390 I/O architecture and programming model by introducing a new fibre channel upper-layer protocol for S/390.…”

Section: I/o Subsystem Fault Tolerancementioning

confidence: 99%