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IBM DS8880 zHyperLink Technology Provides I/O Enhancements on the IBM z14

IBM DS8880 zHyperLink

The growth in cloud, analytics, mobile and social/secure workloads drive additional requirements on IBM Z to execute transactions with continuously improved service-level agreements (SLA) and enterprise class qualities of service. These include workloads that the most demanding of clients have come to expect (e.g., adding new data sources from the cloud for a workflow may increase elapsed times).

Mobile access to data on IBM Z may add unpredictable increases in the volume of transactions that occur, with the resulting contention affecting SLAs. It’s critical that middleware such as Db2 be able to scale to meet these demands. Lowering database transactional latency is critical to mitigate the impact of new data sources and transaction volumes on both the heritage workloads as well as the new work driven directly by the above-mentioned growth.

Lowering I/O latency for IBM Z clients can provide additional business opportunities. In the financial sector, for example, clients may make a trivial transaction such as display an account balance or transfer money. Good response time is critical to provide an excellent user experience. With lower I/O latencies it’s possible to include additional personalized offers to the clients, such as showing how refinancing their mortgage could be advantageous. Thus lower latency can grow business opportunity.

Better I/O latency means a better user experience. Clients will be less likely to switch websites to make a purchase or credit cards on a checkout line because the transaction is taking too long. This means preserving a business’s reputation and client satisfaction.

Improved I/O latency means that financial transactions are less likely to use stand-in processing instead of executing the fraud detection logic. This means that the business may lose less money due to fraud.

Improving I/O latency mitigates or delays the need to re-engineering applications to improve scale as the transaction rates and business grows. Additionally, better I/O latency allows clients to save money by continued growth without adding data sharing instances, which reduces hardware cost and complexity.

Most importantly, reducing I/O latency improves system availability. With improved latency clients get more head room for growth. Unpredictable workload spikes driven by mobile applications and workloads can be handled without degrading system performance or availability. If any hardware failures occur, driving the need for recovery processes to execute (e.g., reset event recovery or storage warm start) the work queues that are built up can be worked off much more quickly.

Matt Kalos is an IBM Distinguished Engineer for storage development.

Harry M. Yudenfriend is an IBM Fellow with Systems and Technology Group, System z and Power who joined IBM in 1980. He was named an IBM Master Inventor in 2001 and has achieved his 33rd invention plateau.

Peter Sutton is an IBM Distinguished Engineer for IBM Z core technology.



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