Blog entries are related to the mainframe operating system z/VSE. Ingolf will share news, hints & tips or any topic. The postings on this site are my own and don't necessarily represent IBM's positions, strategies or opinions.
New Recommended Service Levels (RSLs) are available for z/VSE 5.2.0 and z/VSE 6.1. The RSL cutoff was December 31, 2016. RSLs are preventive service offerings. They fill the gap between z/VSE refreshes and HIPER (High Impact or Pervasive APAR) service provided via PSP (Preventive Service Planning) buckets. An RSL consists of a list of all APARs/PTF numbers, that are available at RSL cutoff dates. More information is here . Have a good weekend.
Today there was a question on VSE-L about the VCHID (virtual channel id) definition in the IOCDS (Input/Output Configuration Data Set). The IOCDS describes the I/O and LPAR configuration. I had a related blog entry about VCHID two years ago - see here . For z13 (M/T 2964) and z13s (M/T 2965), CHPID TYPE=IQD requires the new parameter VCHID for HiperSockets. VCHID is similar to PCHID (physical channel id) for physical devices. VCHID is a fixed number to be assigned in the IOCDS. This number will survive an IML. Prior to the introduction... [More]