Now that it has become harder and harder to make the processor faster, IBM is looking for other ways to make their mainframes perform better.
This has resulted in new co-processors for compression and encryption and now also, with the z14 processor, in a new technology called zHyperLink. This new I/O connectivity aims to significantly reduce the I/O response time, while at the same time not increase the processor (CP) load.
This new technology comes with a set of promises and restrictions that will cause you to rethink the design of your storage and replication infrastructure. The days of distance limitations are back, which has big implications for synchronous replication in particular.
zHyperLink I/O is synchronous I/O, which means that the processor will wait until the I/O operation is complete. This can be more efficient than a POST and SRB, but overall little change is expected. It means that your MLC invoice will not be impacted, it might even be reduced a tiny bit. It will, however, likely impact what is reported as TCB and SRB time, which in turn may have an impact on your chargeback systems.
Our latest white paper, zHyperLink: The Holy Grail of Mainframe I/O?, will discuss:
- The instrumentation that IBM provides in RMF and SMF records
- IBM’s positioning of the new zHyperLink technology
- Some considerations for installations that consider deploying it
zHyperLink: The Holy Grail of Mainframe I/O?
This white paper will discuss IBM’s positioning of the new zHyperLink technology, and provides some considerations for installations that consider to deploy it.
What’s New with IBM DS8900F?
Release 9.1 for the DS8900F storage array contains numerous product improvements that should be interesting and useful to any shop that has DS8900F installed or is considering it.
zAcademy: Life in the fast lane: zHyperLink
The z14 and z15 support a completely new I/O method called zHyperLink. This is easily the most substantial I/O announcement from IBM since the introduction of FICON.
Is this z/OS workload change normal? Utilizing z/OS Anomaly Detection
z/OS Anomaly Detection allows analysts to automatically detect workload and application changes, saving them countless hours of manual labor and intensive scrutiny while trying to determine the significance of changes