Frequently asked questions

General z/VSE questions

 

Question Answer
Why don't the documentation collections contain all manuals in PDF format? Each CD-ROM collection contains all the libraries that are currently available at the time that collection was produced. Many of the older manuals were never provided in PDF format because their original sources are not enabled to be converted to PDF. Please also see the .
How can I order VSE or optional products? Please refer to the How to buy section.
What is IBM Shopz? Shopz is IBM's productivity tool for planning and ordering IBM System z software. With IBM Shopz you can:
For more information please refer to the IBM Shopz User's Guide or FAQs.
Where can I find information about z/VSE performance? Please refer to the z/VSE performance documents in the documentation section.
How many processors can I exploit with VSE? z/VSE Turbo Dispatcher supports any numbers of processors, however it is not recommended to use more than 3 processors. To exploit multiple processors, the VSE system must be tuned and the workload must be sufficient.

In general it is better to run on a faster uni-processor system than to run a a slower multi-processor system, even if the sum MIPS are the same.

The number of processors that are exploited by a particular workload can be determined by using the QUERY TD,INTERNAL command. The NP/TOT value is the non-parallel share (NPS):

#CPUs = 0.8 - 0.9 / NPS

Please refer to the z/VSE performance documents in the documentation section.
Where can I find information about z/VSE security? Please refer to the z/VSE security documents in the documentation section.