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VM66173: 4TB REAL MEMORY SUPPORT

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as new function.

Error description

  • The 4 TB real memory support allows the definition and use of
    real memory up to the 4 TB line for first-level z/VM
    systems, doubling the previously supported 2TB limit for z/VM
    7.2. VM66173 also allows overcommitment of total virtual
    memory across all guests beyond the 4 TB line,
    depending on workload characteristics.  The additional
    real memory support along with support for 80 processors
    allows additional workloads to be consolidated on one
    z/VM LPAR running on IBM Z and LinuxONE servers.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of z/VM that wish to run in a      *
    *                 partition with greater than 2TB and up to    *
    *                 4TB of real memory.                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    ****************************************************************
    * RECOMMENDATION: APPLY PTF                                    *
    ****************************************************************
    With the PTF for APAR VM66173, z/VM 7.2 provides 4 TB real
    memory support, an enhancement to the CP DEFINE STORAGE command,
    and various other command updates. The 4 TB real memory support
    allows the definition and use of real memory up to the 4 TB line
    for first-level z/VM systems.  Overcommitment of total virtual
    memory across all guests beyond the 4 TB level is supported. The
    per-guest limit of 1 TB of virtual memory remains unchanged.
    With automatic standby memory for guests, a system administrator
    can code a more generic DEFINE STORAGE command that does not
    need to be updated every time the guest's directory entry
    storage size changes.
    
    See https://www.vm.ibm.com/perf/reports/zvm/html/ for details of
    the performance scaling with the increase in supported real
    memory.  To support this APAR, new editions of the following
    publications are available:
    
    SC24-6268-08, z/VM: CP Commands and Utilities Reference
    GC24-6270-07, z/VM: CP Messages and Codes
    SC24-6271-07, z/VM: CP Planning and Administration
    GC24-6286-09, z/VM: General Information
    GC24-6294-08, z/VM: Migration Guide
    SC24-6301-07, z/VM: Performance
    SC24-6326-03, z/VM: System Operation
    SC24-6334-02, z/VM: Virtual Machine Operation
    
    For more information about the publication changes, refer to the
    Summary of Changes section located near the beginning of each
    publication.
    
    See https://www.vm.ibm.com/library/ for the online version of
    the updated publications.
    
    This APAR provides updated help files for the following CP
    Commands and Utilities: ATTACH, DEFINE STORAGE, QUERY FRAMES,
    QUERY PAGING, QUERY STORAGE, QUERY SXSSTORAGE, SET AGELIST, SET
    PAGING, SET STORAGE, and CPSYNTAX.
    
    New and updated help files are provided for the following
    messages: HCP025E, HCP094E, HCP097E, HCP099E, HCP100E, HCP401I,
    HCP952I, HCP955W, HCP1133I, HCP2579E, HCP2580I, HCP2581I,
    HCP2582I, HCP2583I, HCP2584I, HCP2585E, HCP2586E, HCP2587E,
    HCP2588E, HCP2589E, HCP2590E, HCP2591E, HCP2592I, HCP2593I,
    HCP2594I, HCP2595I, HCP2596I, HCP2597I, HCP2598E, HCP2599E, and
    HCP2650E.
    

Problem conclusion

Temporary fix

Comments

  • ×**** PE21/06/21 FIX IN ERROR. SEE APAR VM66289  FOR DESCRIPTION
    ×**** PE21/07/26 FIX IN ERROR. SEE APAR VM66552  FOR DESCRIPTION
    ×**** PE21/09/14 FIX IN ERROR. SEE APAR VM66311  FOR DESCRIPTION
    ×**** PE21/10/26 FIX IN ERROR. SEE APAR VM66328  FOR DESCRIPTION
    ×**** AE21/10/19 FIX IN ERROR. SEE APAR VM66320  FOR DESCRIPTION
    

APAR Information

  • APAR number

    VM66173

  • Reported component name

    VM CP

  • Reported component ID

    568411202

  • Reported release

    710

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    YesSpecatt / New Function / Xsystem

  • Submitted date

    2018-06-11

  • Closed date

    2021-02-24

  • Last modified date

    2022-11-14

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UM35834

Modules/Macros

  • AEFRM    AGELIST  ARFRM    ATTACH   CBITABLE CKMAINT  CPLOAD
    CPSYNTAX FRAMES   HCPABF   HCPABN   HCPACS   HCPAFR   HCPAGE
    HCPALD   HCPALE   HCPALF   HCPALG   HCPALR   HCPALU   HCPARD
    HCPARM   HCPASD   HCPASERT HCPASM   HCPASR   HCPATD   HCPATTOP
    HCPATTSL HCPAVLZN HCPA2INC HCPBIM   HCPBIN   HCPBIR   HCPBIS
    HCPBIU   HCPBOU   HCPBSI   HCPBSM   HCPBUT   HCPBUU   HCPBUV
    HCPCACHE HCPCALL  HCPCBI   HCPCDL   HCPCDX   HCPCMR   HCPCMS
    HCPCOUNT HCPCQO   HCPCRS   HCPCSA   HCPCTC   HCPCTN   HCPCTU
    HCPCTV   HCPCVT   HCPCVV   HCPDBD   HCPDCA   HCPDCD   HCPDGB
    HCPDGD   HCPDMO   HCPDMP   HCPDMQ   HCPDOP   HCPDPASZ HCPDSB
    HCPDSFBK HCPDSP   HCPDSRBK HCPDST   HCPDSTBK HCPDTD   HCPDTS
    HCPEDV   HCPENTER HCPEPILG HCPEQUAT HCPESC   HCPESS   HCPEXPBK
    HCPFDL   HCPFLGDS HCPFMI   HCPFMP   HCPFMU   HCPFMUTL HCPFMV
    HCPFRATE HCPFRG   HCPFRMTE HCPFRQ   HCPFST   HCPFTE   HCPFTH
    HCPFTR   HCPFTS   HCPFTXBK HCPFUN   HCPFXR   HCPGENDC HCPGENER
    HCPGETFR HCPGIR   HCPGSP   HCPHAM   HCPHAS   HCPHAT   HCPHDS
    HCPHDU   HCPHFB   HCPHPC   HCPHPH   HCPHPK   HCPHPM   HCPHPR
    HCPHPV   HCPHRM   HCPHRP   HCPHRS   HCPHRU   HCPHSU   HCPHTF
    HCPHTR   HCPHTT   HCPHTU   HCPHTV   HCPHVD   HCPHVV   HCPIFI
    HCPIFT   HCPIIO   HCPIIS   HCPINC2A HCPIOB   HCPIOJ   HCPIOP
    HCPIOS   HCPIOT   HCPIOX   HCPIPT   HCPIQM   HCPISG   HCPISM
    HCPISR   HCPIST   HCPISU   HCPISV   HCPIVL   HCPKAD   HCPKAE
    HCPKAP   HCPKAQ   HCPKAR   HCPKAT   HCPKAV   HCPKCB   HCPKCC
    HCPKCD   HCPKCI   HCPKCL   HCPKCS   HCPKCW   HCPKDM   HCPKFL
    HCPLAL   HCPLCALL HCPLEXIT HCPLFR   HCPLGN   HCPLKAGL HCPLKAV
    HCPLKS   HCPLKVAC HCPLMM   HCPLMN   HCPLOE   HCPMC    HCPMCA
    HCPMCB   HCPMCH   HCPMCN   HCPMCQ   HCPMCR   HCPMCS   HCPMCV
    HCPMDLAT HCPMES   HCPMESB  HCPMFA   HCPMFB   HCPMFE   HCPMFJ
    HCPMFK   HCPMFX   HCPMFY   HCPMINUS HCPMLM   HCPMNE   HCPMNN
    HCPMNO   HCPMNS   HCPMNZ   HCPMOI   HCPMOL   HCPMOM   HCPMON
    HCPMONEQ HCPMOT   HCPMOX   HCPMOZ   HCPMPC   HCPMPG   HCPMPS
    HCPMSM   HCPMVC   HCPMVN   HCPMVP   HCPMXF   HCPMXG   HCPMXI
    HCPMXN   HCPMXRBK HCPNDM   HCPNEIGH HCPNLS   HCPNOO   HCPOM1
    HCPOM2   HCPOPTNS HCPPAE   HCPPAF   HCPPAG   HCPPAGG  HCPPAGTE
    HCPPAH   HCPPAI   HCPPAK   HCPPAU   HCPPAV   HCPPCC   HCPPCC$
    HCPPCH   HCPPCQ   HCPPCU   HCPPCV   HCPPDR   HCPPFE   HCPPFP
    HCPPFR   HCPPFX   HCPPFXPG HCPPGC   HCPPGD   HCPPGSTE HCPPGT
    HCPPGU   HCPPGV   HCPPIN   HCPPIRBK HCPPLM   HCPPLP   HCPPLSBK
    HCPPMP   HCPPMR   HCPPOD   HCPPPI   HCPPPR   HCPPTA   HCPPTC
    HCPPTE   HCPPTF   HCPPTG   HCPPTI   HCPPTM   HCPPTY   HCPPTZ
    HCPPZE   HCPQDIO  HCPQDL   HCPQSBLK HCPQSP   HCPQSX   HCPQVP
    HCPRCU   HCPRCU$  HCPRDA   HCPRDD   HCPRDM   HCPREGCK HCPRFI
    HCPRLA   HCPRLAVL HCPRLB   HCPRLE   HCPRLG   HCPRLJ   HCPRLM
    HCPRLN   HCPRLR   HCPRLS   HCPRLT   HCPRMP   HCPRMPBK HCPRP
    HCPRPP   HCPRRC   HCPRSD   HCPRSM   HCPRSMBK HCPRTEBK HCPSALBK
    HCPSAS   HCPSCFBK HCPSCH   HCPSCP   HCPSEGG  HCPSEGTE HCPSET
    HCPSFS   HCPSGP   HCPSHU   HCPSIT   HCPSMO   HCPSNP   HCPSRN
    HCPSSAGB HCPSTERS HCPSTP   HCPSTQ   HCPSVF   HCPSVU   HCPSWA
    HCPSWD   HCPSWH   HCPSWL   HCPSXA   HCPSXD   HCPSXEWK HCPSXL
    HCPSXP   HCPSXSTE HCPSXU   HCPSYC   HCPSYN   HCPSYS   HCPSYSCM
    HCPSZC   HCPSZD   HCPSZE   HCPSZH   HCPSZK   HCPSZL   HCPTCM
    HCPTCMBK HCPTKDEF HCPTOKDF HCPTRANS HCPTRAN1 HCPTSI   HCPTSTPN
    HCPTTA   HCPTTABK HCPTXE   HCPTXJ   HCPUCR   HCPUIM   HCPULAGL
    HCPULAV  HCPULT   HCPULVAC HCPUNPIN HCPUSR   HCPUTR   HCPVAC
    HCPVACBK HCPVAI   HCPVAP   HCPVAU   HCPVCFBK HCPVCZBK HCPVDI
    HCPVDT   HCPVIT   HCPVMDBK HCPVMS   HCPVQA   HCPVQE   HCPVQF
    HCPVQG   HCPVQO   HCPVQP   HCPVQQ   HCPVQT   HCPWIF   HCPWPR
    HCPWRP   HCPWRS   HCPXAT   HCPXLK   HCPXSG   HCPZDS   HCPZPC
    HCPZPP   HCPZPR   HCPZSC   HCPZXU   HCP025E  HCP094E  HCP097E
    HCP099E  HCP100E  HCP1133I HCP2579E HCP2580I HCP2581I HCP2582I
    HCP2583I HCP2584I HCP2585E HCP2586E HCP2587E HCP2588E HCP2589E
    HCP2590E HCP2591E HCP2592I HCP2593I HCP2594I HCP2595I HCP2596I
    HCP2597I HCP2598E HCP2599E HCP2650E HCP401I  HCP952I  HCP955W
    HCQADT   HCQBMP   HCQDTM   HCQEQUS  HCQEXT   HCQSCN   HCWAI8
    HCWA12   LASTTRAN LGRVMDBK MAX      MIN      MRMTRAZN MRMTRMEM
    MRSTOADD MRSTOAZN MRSTORCP MRSTOREM MRSTORSG MRSTORSP MRSTORST
    MRSYTASG MRSYTRSG PAGING   SSASAVE  STORAGE  SXSSTOR
    

Publications Referenced
SC24626808GC24627007SC24627107GC24628609GC24629408
SC24630107SC24632603SC24633402  

Fix information

  • Fixed component name

    VM CP

  • Fixed component ID

    568411202

Applicable component levels

  • R720 PSY UM35834

       UP21/03/03 P 2201  

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
14 November 2022