IBM Z Hardware and Operating Systems Ideas Portal


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BCP_IOS

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GDPS Monitoring of Path Availability to Metro Mirror secondary Devices

Availability of channel paths to Metro Mirror secondary devices is crucial in the context of a GDPS HyperSwap. Currently it is possible even with a GDPS planned HyperSwap to swap from devices connected via 8 paths to devices connected via only 1 p...
almost 4 years ago in z/OS / BCP_IOS 7 Future consideration

Enhanced SETIOS Function to Perform Freeze

Hyperswap verifications with the new SETIOS-function work very well. But this works for Unplanned Hyperswaps only, not for a Freeze.It would be very helpful when a similar command is available for the verification on the Secondary DASD (e.g. "SETI...
about 5 years ago in z/OS / BCP_IOS 18 Planned for future release

IO Timing Facility - Page Devices Support

We previously submitted an RFE for I/O Timing Facility (IOT) Page devices support.RFE : https://www.ibm.com/developerworks/rfe/execute?use_case=viewRfe&CR_ID=49685 When we submitted this RFE, we expected the system to enter the non-restartable...
over 2 years ago in z/OS / BCP_IOS 0 Future consideration

Allow changing a internal MIH value set by MODULE IOSVDPDR and IOSRRRSV

There are some Japanese banking customers who issue VARY dddd,OFFLINE,FORCE command when an I/O timeout occurs on a device which have a redundancy by software (ie. IMS OLDS). As a result, these devices for being no-response are separated out and a...
over 2 years ago in z/OS / BCP_IOS 0 Future consideration

IMPROVED METHOD TO REMOVE PATHS

We did the test to verify the effect of RECOVERY PATH_SCOPE=CU. The test case of one path busy got the expected result. 2-3 seconds after 'VARY ONLINE', the path of all devices under the same CU got offline. However, the two paths busy case did no...
almost 5 years ago in z/OS / BCP_IOS 1 Future consideration

Healthcheck XCF_CDS_SPOF should be customizable via Healthcheck framework

The check IBMXCF,XCF_CDS_SPOF checks once every hour for single points of failure in CDS configuration. It also tells you once every hour, if you bought a machine with only one CPU drawer, that this indicates a SPOF. There is an option to ignore t...
about 6 years ago in z/OS / BCP_IOS 0 Future consideration

XCF signaling I/O stalls during IODF ACTIVATION involving thousands of HW changes

XCF signaling I/O stalls during IODF activation On an z/OS image that did NOT issue the HW ACTIVATE-Customer observed that CPU usage for all MASTER address spaces was more than 10 CPs for the RMF Mon 3 interval just before the IOS502I message. Add...
over 2 years ago in z/OS / BCP_IOS 0 Planned for future release

Improve the way of reporting FICON Link Incident Report

(System)Core banking systems (Description)In z/OS1.7 or later, when Linux on z recieves FICON Link Incident Report (LIR), zOS1.7 LPAR reports the LIR to the lowest MIF number of LPAR. BTMU would like to select whether or not z/OS reports the LIR.
over 9 years ago in z/OS / BCP_IOS 46 Future consideration

New function related to the MVS SWAP command(dynamic device reconfiguration (DDR))

When a TS7700 tape cluster is requested to enter Service Mode, the SWAP command is a needful function. IBM invented the TS7700 Control Unit Initiated Reconfiguration (CUIR) functions years ago. The intention was to assist and automate as much a...
over 1 year ago in z/OS / BCP_IOS 0 Future consideration

Reduce CPU consumption of IOS HyperSwap API address space for a large number of addresses

When executing a reload of the GDPS GEOPARM the IOSHSAPI ( IOS HyperSwap API address space ) consumes a lot of CPU in a short period of time when there is a high number of addresses under GDPS, causing some customer applications to slowdown and ha...
about 3 years ago in z/OS / BCP_IOS 1 Future consideration

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