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.
Understanding & Dealing with z14 Traffic Patterns
The z14 is designed for massive, parallel processing. So why do delays still occur? This webinar will explore common sources of application delays and discuss practical solutions to reduce these delays.
What Will Happen to Your MICS or MXG Legacy When You Retire?
z/OS infrastructure performance experts are retiring in growing numbers. When that golden day of retirement arrives for you, what will happen to that SAS and MXG or MICS reporting toolset that you spent decades developing?
Don’t Let RPO Knock Your SOX Off!
Proving that you maintain control of your recovery point objective (RPO) is key for SOX compliance if you use asynchronous replication to protect your data.