IBM z13. Frequently Asked Questions. Worldwide

Transcription

1 IBM z13 Frequently Asked Questions Worldwide

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4 1 Based on preliminary internal measurements and projections. Official performance data will be available upon announce and can be obtained online at LSPR (Large Systems Performance Reference) website at: Actual performance results may vary by customer based on individual workload, configuration and software levels.

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39 2 Quoted from Page 1 of RDMA over Converged Ethernet (RoCE) Fact Sheet at

40 3 Based on internal IBM benchmarks using a modeled CICS workload driving a CICS transaction that performs 5 DPL calls to a CICS region on a remote z/os system, using 32K input/output containers. Response times and CPU savings measured on z/os system initiating the DPL calls. The actual response times and CPU savings any user will experience will vary. 4 Based on projections and measurements completed in a controlled environment. Results may vary by customer based on individual workload, configuration and software levels. 5 Based on internal IBM benchmarks using a modeled WebSphere MQ for z/os workload driving non-persistent messages across z/os systems in a request/response pattern. The benchmarks included various data sizes and number of channel pairs The actual throughput and CPU savings users will experience may vary based on the user workload and configuration. 6 Based on internal IBM benchmarks in a controlled environment using z/os V2R1 Communications Server FTP client and FTP server, transferring a 1.2GB binary file using SMC-R (10 GbE RoCE Express feature) vs standard TCP/IP (10GbE OSA Express4 feature). The actual CPU savings any user will experience may vary.

41 7 SMC-R can also be exploited using direct RoCE Express to RoCE Express connectivity (without any switch). However, this type of direct physical connectivity forms a single physical point to point connection disallowing any other connectivity with other LPARs (e.g. any other SMC-R peers). While this is a viable option for test scenarios it is not practical (not recommended) for production deployment. 8 The 802.3x Pause feature is implemented differently with different switch vendors. Some implement the feature on a per-port basis; others on a global basis. Most switches have Global Pause enabled but you will want to verify with the switch vendor that this is the case on the switch that is part of the RoCE fabric.

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51 . 9 9 Based on projections and measurements completed in a controlled environment. Results may vary by customer based on individual workload, configuration and software levels. 10 Based on projections and measurements completed in a controlled environment. Results may vary by customer based on individual workload, configuration and software levels.

52 11 Based on projections and measurements completed in a controlled environment. Results may vary by customer based on individual workload, configuration and software levels.

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63 12 To learn more about the performance benefits of large DB2 structures, reference "IBM zenterprise System(R): Performance Report on Exploiting Large Memory for DB2 Buffer Pools with SAP(R)" at 13 Note: A link data rate of 8 GBps does not represent the actual performance of the link.

64 14 Note: The ICA SR and InfiniBand (PSIFB) link data rates do not represent the performance of the link. The actual performance is dependent upon many factors including latency through the adapters, cable lengths, and the type of workload. Systems Lab Services can assist your migration to ICA SR and PSIFB coupling links by providing services to assess the impact of the migration or to assist with the implementation of the migration.

65 15 Note that the z13 will be released with CFC level 20

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67 16 Elliptic Curve Cryptography Digital Signature Algorithm (ECDSA) is an emerging public-key algorithm. ECC is based on a computationally harder mathematical problem than RSA. It provides the same or better security (per-key-bit) with much shorter key lengths than RSA keys. This makes ECC appropriate in resource constrained environments such as smart cards, that may have limited space for the storage of key material. ECC is capable of providing digital signature functions and key agreement functions.

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79 IBM s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM s sole discretion. Information regarding potential future products is intended to outline our general product direction and it should not be relied on in making a purchasing decision. The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any material, code or functionality. Information about potential future products may not be incorporated into any contract. The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.

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101 17 All supported releases of Windows may not be available from Microsoft but continue to be available from IBM and other resellers

102 18 For KVM levels on older zbx Models, see:

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