IBM Z Hardware and Operating Systems Ideas Portal


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ADD A NEW IDEA

BCP_IOS

Showing 50

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...
over 3 years ago in z/OS / BCP_IOS 1 Future consideration

Consistent Read from Secondary - decision making in response to poor performance/hardware health changes

Our current understanding is that to exploit the DS8K's consistent read from secondary function, IOS currently sends some queries out at Hyperswap enable time in order to determine at the LCU boundary whether reads should be directed to the PPRC p...
about 1 year ago in z/OS / BCP_IOS 1 Future consideration

Separate message when configuring CHPID OFFLINE or ONLINE and CHPID is already offline or online

RBC is asking for a separate message when they CONIFG a CHIPD ONLINE or OFFLINE and the CHPID is already in that desired state. Currently, all it says is CONFIG processing is complete. For example:CHPID is ONLINE... CF CHP(85),OFFLINEIEE503I CHP(8...
about 3 years ago in z/OS / BCP_IOS 0 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...
over 6 years ago in z/OS / BCP_IOS 0 Future consideration

z/OS HyperSwap and Concurrent Copy

As in RFE ID 141306 suggested by IBM Systems Developer, I'll raise a RFE also for the z/OS Hyperswap component. z/OS Hyperswap should prevent a planned HyperSwap if a concurrent copy session is active. An unplaned HyperSwap should be possible of c...
over 4 years ago in z/OS / BCP_IOS 0 Future consideration

Customer should not encounter additional software workload when enabling zHyperLink

Additional CPU software costs should not be experienced when enabling zHyperLink features. The customer should be given the option to convet zHyperLink I/O to FICON if the workload is not going to run on a z/IIP. This will allow the customer to en...
almost 2 years ago in z/OS / BCP_IOS 0 Future consideration

zEDC Authorized Services Managing Module Dynamic Area and History Buffer + Update Documentation

While testing out zEDC authorized services running in synchronous mode on a z15, we noticed pairs of STORAGE OBTAINS/RELEASES surrounding each call to FPZ4ABC, leading to increased CPU time. After opening a PMR, it was revealed that these requests...
over 3 years ago in z/OS / BCP_IOS 1 Future consideration

Health check the completeness of volumes in a zOS HyperSwap configuration managed by CSM

The HyperSwap configuration should be checked that no PPRC enabled volume that should be in the configuration is missing, otherwise the integrity of data is not given in case a Swap occurs. It should be possible to define a list with exceptions of...
over 4 years ago in z/OS / BCP_IOS 0 Future consideration

ADD HEALTH CHECKER FOR IOS RECOVERY

There are IECIOSxx settings that would be helpful for reducing the recovery time of Channel Path errors.However, unless you are aware of them, they do no good. there are 100's of parameter settings and as IBM discovers best practices, adding IBM H...
7 months ago in z/OS / BCP_IOS 0 Future consideration

Health check enhancement for XCF_CDS in a zOS Hyperswap environment managed by CSM

The existing checks XCF_CDS_SPOF and XCF_CDS_SEPARATION don't check in a HyperSwap environment that primary CDSes and alternate CDSes are on separate DASD boxes of different sites. An extention should check the site information of the HyperSwap se...
over 4 years ago in z/OS / BCP_IOS 1 Future consideration

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