IBM Z9 Planning Manual Download Page 142 | Manualshive

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background image

is

another

example

of

dynamic

reconfiguration

of

central

storage.

For

this

example,

assume

the

amount

of

installed

storage

is

32

GB.

The

amount

of

physical

central

storage

used

by

hardware

system

area

(HSA)

is

2

GB

in

this

example.

The

storage

granularity

is

64

MB

so

the

HSA

addressable

storage

size

is

2048

MB.

This

leaves

1022

GB

of

central

storage

addressability

to

be

allocated

to

LPs.

LP-A

and

LP-B

are

defined

with

an

initial

amount

of

14

GB

each

of

central

storage,

a

reserved

amount

of

2

GB,

and

system

determined

central

storage

origins.

LP-A

and

LP-B

are

activated

and

IPLed.

At

the

completion

of

IPL,

LP-A

has

its

reserved

central

storage

configured

online

by

entering

CF

STOR(E=1),ONLINE

from

the

z/OS

software

console

for

LP-A.

shows

the

resulting

storage

layout

following

these

actions.

0 GB

990GB

1004 GB

1006 GB

1020 GB

1022 GB

1024 GB

RSVD = 2 GB (offline)

RSVD = 2 GB (online)

Unused Addressability

HSA

LP-B

LP-A

ORIG = system determined INIT = 14 GB

ORIG = system determined INIT = 14 GB

Addressable

Storage

Figure

3-3.

Initial

Central

Storage

Layout

3-16

PR/SM

Planning

Guide

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Summary of Contents for Z9

Page 1: ...System z9 Processor Resource Systems Manager Planning Guide SB10 7041 03...

Page 2: ......

Page 3: ...System z9 Processor Resource Systems Manager Planning Guide SB10 7041 03...

Page 4: ...indicated by a vertical line to the left of the change There may be a newer version of this document in PDF format available on Resource Link Go to http www ibm com servers resourcelink and click on...

Page 5: ...verview 1 2 Prerequisites for Operation 1 2 PR SM 1 2 zSeries Parallel Sysplex Support 1 4 Guest Coupling Simulation 1 5 Control Program Support in a Logical Partition 1 5 Input Output Configuration P...

Page 6: ...tion in a Coupling Facility 2 48 Coupling Facility LP Activation Considerations 2 49 Coupling Facility Shutdown Considerations 2 49 Coupling Facility LP Operation Considerations 2 49 Coupling Facility...

Page 7: ...3 52 Assigning Channel Paths to a Logical Partition 3 52 Automatic Load for a Logical Partition 3 55 Defining Logical Partitions 3 55 Global Reset Profile Definitions 3 57 General 3 60 Processor Char...

Page 8: ...Logical Partition Performance 5 8 RMF LPAR Management Time Reporting 5 8 Dedicated and Shared Central Processors 5 9 CPENABLE 5 9 Start Interpretive Execution SIE Performance 5 9 Recovery Strategy 5...

Page 9: ...2 70 3 1 Central Storage Layout 3 14 3 2 Reconfigured Central Storage Layout 3 15 3 3 Initial Central Storage Layout 3 16 3 4 Central Storage Layout Following Reconfiguration 3 17 3 5 Initial Central...

Page 10: ...y Queuing 3 81 5 1 Storage Information Task 5 2 5 2 Change Logical Partition Controls Page 5 3 5 3 Change LPAR Group Controls 5 4 5 4 Change Logical Partition Security Page 5 5 5 5 View LPAR Cryptogra...

Page 11: ...ities 2 48 2 8 CPC Support for Coupling Facility Code Levels 2 51 3 1 Control Program Support on z9 3 6 3 2 Central Storage Granularity 3 8 3 3 PR SM LPAR Processor Weight Management with Processor Re...

Page 12: ...x PR SM Planning Guide...

Page 13: ...fety information in the US English publications Laser Safety Information All System z models can use I O cards such as PCI adapters ESCON FICON Open Systems Adapter OSA InterSystem Coupling 3 ISC 3 or...

Page 14: ...ed in accordance with European Directive 2002 96 EC concerning waste electrical and electronic equipment WEEE The Directive determines the framework for the return and recycling of used appliances as...

Page 15: ...in your area For information on disposal of batteries outside the United States go to http www ibm com ibm environment products index shtml or contact your local waste disposal facility In the United...

Page 16: ...rticipation is important to minimize any potential effects of batteries and accumulators on the environment and human health due to the potential presence of hazardous substances For proper collection...

Page 17: ...eb site at http www deq state or us lq electronics htm Washington For information about recycling covered electronic devices in the State of Washington go to the Department of Ecology Web site at http...

Page 18: ...xvi PR SM Planning Guide...

Page 19: ...tion are necessarily available on every CPC Sample tasks and panels explained in this publication reference tasks and panels available from the support element console However detailed procedures for...

Page 20: ...ES 9000 Processor Resource Systems Manager Planning Guide GA22 7123 However for the most current coupling facility control code information for all models use this publication xviii PR SM Planning Gui...

Page 21: ...ristics of LPs v Chapter 4 Operating Logical Partitions describes how to operate the Hardware Management Console and the support element console and describes the procedure for initializing the system...

Page 22: ...gement Console Operations Guide SC28 6859 v Support Element Operations Guide SC28 6860 ESCON Concepts v Introducing Enterprise Systems Connection GA23 0383 v ESCON and FICON Channel to Channel Referen...

Page 23: ...nd practical information for implementing and using SFM in the z OS environment v z OS MVS Setting Up a Sysplex SA22 7625 LPAR Management Time The following publication provides information about the...

Page 24: ...using Resource Link at http www ibm com servers resourcelink Select Feedback on the Navigation bar on the left Be sure to include the name of the book the form number of the book the version of the bo...

Page 25: ...value that applies to the entire group and not just the individual image Summary of Changes for SB10 7041 01a This revision contains editorial changes and the following new technical changes New Infor...

Page 26: ...xxiv PR SM Planning Guide...

Page 27: ...ogram IOCP Support 1 14 Hardware Support 1 14 Operator Training 1 14 Logical Partitions 1 15 Characteristics 1 15 Potential Applications 1 18 Examples of Logical Partition Applications 1 19 Compatibil...

Page 28: ...ources are allocated in contiguous blocks These allocations can be dynamically reconfigured Sharing of allocated central storage among multiple LPs is not allowed On System z9 all storage is defined a...

Page 29: ...ths on page 3 48 Crypto Features An optional feature Crypto Express2 is available which is designed for Federal Information Processing Standard FIPS 140 2 Level 4 Certification Crypto Express2 contain...

Page 30: ...pport Parallel sysplex makes use of a broad range of hardware and software products to process in parallel a transaction processing workload across multiple z OS images running in a sysplex and sharin...

Page 31: ...sysplex environments that z VM can simulate However practical limits on the number of guests that can be supported by a particular hardware configuration will also constrain the number of simulated p...

Page 32: ...Cryptographic Services Facility and System SSL functions v Support for zSeries PCI X Cryptographic Coprocessor feature by the Integrated Cryptographic Services Facility and System SSL functions v Supp...

Page 33: ...ing enhanced scalability of parallel sysplex v Support z ELC software pricing structure v Support for zSeries PCI Cryptographic Accelerator feature by the Integrated Cryptographic Services Facility an...

Page 34: ...ator feature by the Integrated Cryptographic Services Facility and System SSL functions v Support for zSeries PCI X Cryptographic Coprocessor feature by the Integrated Cryptographic Services Facility...

Page 35: ...Express2 1P only available on the z9 BC with ICSF 64 bit Virtual Support for z OS V1 6 and z OS e V1 6 provides access to the secure key and System SSL functions via the Integrated Cryptographic Serv...

Page 36: ...ort for z9 BC and z9 EC v System managed Coupling Facility structure duplexing for z OS guests v Support for FICON Express2 CPHID type FC including Channel To Channel CTC v Support for FICON Express2...

Page 37: ...MWLC pricing option z VSE Version 3 Release 1 Support v ESA 390 mode v 2 GB of processor storage v Up to 10 CPs v 256 channel paths v Support for z9 EC and z9 BC v OSA Express2 familiy v HiperSockets...

Page 38: ...SA 390 TPF mode v 16 CPs either shared or dedicated LP v 2048 MB of central storage v Coupling facility level 9 with APAR support v Shared multiple processor LPs with PUT 03 v 256 channels 1 12 PR SM...

Page 39: ...e IOCDS HCD is required to define the I O configuration to the operating system HCD is also the recommended way to define hardware configurations The HCD component of z OS allows you to define the har...

Page 40: ...IOCP Support To perform a power on reset you must use an LPAR IOCDS To generate an LPAR IOCDS you need to use the ICP IOCP program PTFs for supported IOCP versions must be applied and can be obtained...

Page 41: ...only supports the activation of 15 LPs but you can power on reset the R07 with an IOCDS containing up to 30 LPs You cannot define an IOCDS with more than 30 LPs for a z9 BC v LPs can operate in ESA 3...

Page 42: ...igurable channel paths for the exclusive use of an LP unless overridden by the operator Limit the authority of an LP to read or write any IOCDS in the configuration and limit the authority of an LP to...

Page 43: ...ZVSE ZVM Figure 1 1 Characteristics of Logical Partitions Chapter 1 Introduction to Logical Partitions 1 17...

Page 44: ...ured in a sysplex Coupled Systems Multiple instances of the same workload can be run in multiple LPs on one or more CPCs as part of a sysplex configuration that takes advantage of the centrally access...

Page 45: ...nning a z OS system in ESA 390 mode one is running a z VM system in ESA 390 mode and one is running in coupling facility mode Figure 1 3 represents a CPC with three LPs an active XRF system an alterna...

Page 46: ...r during LP activation Duplicate device number conflicts are also detected when a dynamic I O configuration change is made Multiple Subchannel Sets MSS A new Multiple Subchannel Sets MSS structure for...

Page 47: ...HARED device v Each z OS LP can run the Resource Measurement Facility RMF RMF enhancements for PR SM allow a single LP to record system activities and report them in the Partition Data Report To enabl...

Page 48: ...ode and the machine type permits a unique CPU ID for each logical partition v The version code for the System z9 is always zero and is not affected by the operating mode v The CPU identification numbe...

Page 49: ...following examples show the format and contents of the CPU ID information stored by the STIDP instruction for logical CPs in active LPs Table 1 1 shows the CPU ID information for a z9 EC with 3 active...

Page 50: ...stem I O configuration S08 1344 MB 1 CSS 2 LPs 96 physical control units 4096 devices 64 channels defined in the IOCDS Dynamic I O configuration not enabled Concurrent code change not authorized v Lar...

Page 51: ...x timer if one is present Operating systems in LPs that do synchronize to the Sysplex Timer will all be running with identical TOD values Operating systems in LPs that do not synchronize to the Sysple...

Page 52: ...plex of several z OS LPs in multiple LPs in the same LPAR configuration Use the SIMETRID keyword in the CLOCKxx parmlib member for z OS to synchronize the members of the sysplex in the LPs Synchronize...

Page 53: ...the TOD clock architecture to multi system configurations v Help ensure sysplex wide uniqueness of the STCKE TOD values The TOD Programmable Field TODPF is a 16 bit quantity contained in bit position...

Page 54: ...1 28 PR SM Planning Guide...

Page 55: ...atements for ICP 2 28 Shared Devices Using Shared Channels 2 31 Shared Devices Using Unshared Channels 2 31 Duplicate Device Numbers for Different Physical Devices 2 33 Coupling Facility Planning Cons...

Page 56: ...nnels TYPE CFP TYPE CBP TYPE CIB or TYPE ICP 2 57 Defining Internal Coupling Channels TYPE ICP 2 58 I O Configuration Considerations 2 58 Considerations when Migrating from ICMF to ICs 2 59 Linux Oper...

Page 57: ...ion and used for multiple machines and I O configuration data sets HCD supports v Up to 60 logical partitions LPs per central processing complex CPC v Coupling facility configurations v Multiple Image...

Page 58: ...es Note z VM can define coupling facility channel paths for a z OS LP but does not support real coupling facility channel paths for use by z VM or guest operating systems Input Output Configuration Pr...

Page 59: ...number of control unit headers CUHs is 4096 per logical channel subsystem CSS v The maximum number of physical control units is 8192 v The maximum number of devices is 65280 per CSS for subchannel set...

Page 60: ...you do then define these channel paths as spanned by specifying multiple CSS IDs in the PATH keyword of the IOCP CHPID statement Doing this further helps reduce the number of channel paths configured...

Page 61: ...w channels to compete for logical paths until all of the control unit s logical paths are used Why Manage Logical Paths The ESCON and FICON environments the use of ESCON channels FICON Express channel...

Page 62: ...6 16 16 16 16 16 16 32 64 64 128 2074 Console Support Controller 2074 002 2 32 64 3172 Interconnect Controller 3172 1 2 Note 3 16 3174 Establishment Controller 3174 12L SNA only 3174 22L SNA only 1 1...

Page 63: ...early some of the ESCON channel paths will not operate in this configuration Managing logical paths can provide a way to alleviate this situation LP1 LP2 LP3 LP4 LP5 C N C C N C C N C C N C C N C C N...

Page 64: ...ts a logical path to the 3990 As in Figure 2 1 on page 2 9 a total of 20 logical paths is requested from the 3990 which can only satisfy 16 of the requests Again you can avoid this situation by managi...

Page 65: ...a first come first served basis Control units do not manage the allocation of logical paths but instead allow channels to compete for logical paths until all of the control unit s logical paths are u...

Page 66: ...communication between the channel port and the control unit port used in the path A link involved in the path fails or is disconnected When a shared channel is affected by a port being blocked a dynam...

Page 67: ...better understand how you can manage logical paths using these methods consider the following examples Deactivating Unneeded Logical Partitions Deactivating unneeded LPs can prove useful for managing...

Page 68: ...ty However if LP4 or LP5 both test LPs did not require four channel paths each to the 3990 you could configure offline two of the four channel images used by LP4 and two of the four channel images use...

Page 69: ...r HCD to define the access lists and candidate lists for channel paths to determine the configurability of a channel to an LP This capability exists for both unshared and shared channels and can help...

Page 70: ...hannel will attempt to establish only one logical path to each of the 3174s even though 5 LPs share the channel This is useful because the 3174 in non SNA mode only supports one logical path In the ex...

Page 71: ...e 10 11 13 14 12 3174 in non SNA mode 3174 in non SNA mode 3174 in non SNA mode CHPID 30 is a shared ESCON channel 3174 in non SNA mode LP1 LP2 LP3 LP4 LP5 Figure 2 5 Defining Devices to a Subset of L...

Page 72: ...nel will only attempt to establish a logical path for LP1 to CUH 0 because only LP1 has a device defined on that CUH Similarly only LP2 can access CUH 1 only LP3 can access CUH 2 only LP4 can access C...

Page 73: ...ctivity to the control unit port Prohibiting a dynamic connection or communication between two Director ports affects all channel images of a shared channel The system will not establish any logical p...

Page 74: ...SA z OS then sends the appropriate operating system Vary Path requests SA z OS can also provide coordination between operating systems when logical paths are removed from one system and transferred to...

Page 75: ...hannel switches Understanding ESCON and MIF Topologies This section describes the following I O topologies v Point to point topology v Switched point to point topology v MIF channel sharing topology P...

Page 76: ...MIF topologies offer improvements in managing I O busy conditions Figure 2 8 compares the point to point switched point to point and MIF channel sharing topologies Point to Point Topologies Concentrat...

Page 77: ...he number of channels is based on the number of concurrent data transfers the control unit is capable of Although the recommended number of channels satisfies connectivity and performance requirements...

Page 78: ...use eight fewer ESCD ports without a reduction in I O connectivity LP1 LP2 LP3 LP4 C N C C N C C N C C N C 3990 LPAR Cluster 1 Cluster 2 With shared ESCON channels Without shared ESCON channels LP1 LP...

Page 79: ...N C C N C LP1 LP2 LP3 LP4 LP5 LP1 LP2 LP3 LP4 LP5 C N C C N C C N C C N C C N C C N C C N C C N C C N C C N C 3990 3990 ESCD ESCD Cluster 1 Cluster 2 Cluster 1 Cluster 2 Figure 2 10 Consolidating ESCO...

Page 80: ...to connect them v Provide full redundancy I O connectivity is maintained while hardware requirements channels and an ESCD are reduced LP1 LP1 C C T T C C C C T T C C C T C C T C C T C C C N N C C C C...

Page 81: ...are some configurations where use of an unshared channel is more appropriate Consider the following v Logical Path Limitations of the Control Unit While many ESCON control units can communicate with m...

Page 82: ...umber of logical partitions in the configuration one or more asterisks may be used to specify that one or more logical partitions are to be reserved along with their associated CSS and MIF image IDs A...

Page 83: ...s list CSS cssid access list candidate list REC CSS cssid access list candidate list NOTPART CSS cssid access list CSS cssid access list candidate list IOCLUSTER cluster_name SHARED CPATH CSS cssid ch...

Page 84: ...time Using the SHARED keyword specifies that the channel paths on the CHPID statement are shared More than one LP at the same time can access a shared CHPID When CHPIDs are not shared only one LP can...

Page 85: ...OCP input file if device numbers are not duplicated within an LP v You can assign a maximum of eight channel paths from each LP to a device Device sharing among LPs is accomplished by attaching multip...

Page 86: ...s method of defining the IOCP input provides greater flexibility because it allows you to move CHPIDs from one LP to another and eliminates possible conflicts see Figure 2 16 on page 2 35 Figure 2 14...

Page 87: ...T CUNUMBR 2002 PATH 24 UNITADD 90 IODEVICE ADDRESS 190 CUNUMBR 2001 2002 CHPID PATH 28 PARTITION D CHPID PATH 2C PARTITION D CNTLUNIT CUNUMBR 3001 PATH 28 UNITADD 90 CNTLUNIT CUNUMBR 3002 PATH 2C UNIT...

Page 88: ...CNTLUNIT CUNUMBR 0016 PATH 24 UNITADD 0E IODEVICE ADDRESS 110 CUNUMBR 0015 IODEVICE ADDRESS 00E CUNUMBR 0016 CHPID PATH 28 PARTITION D CHPID PATH 2C PARTITION D CNTLUNIT CUNUMBR 0017 PATH 28 UNITADD...

Page 89: ...DDRESS 110 CUNUMBR 0004 Duplicate Device Number Conflicts IOCP allows duplicate device numbers in an IOCDS only if the duplicate device numbers do not occur in the same logical partition Therefore IOC...

Page 90: ...PARTITION ZOSPROD REC CNTLUNIT CUNUMBR 0001 PATH 00 04 UNITADD 80 IODEVICE ADDRESS 180 CUNUMBR 0001 CHPID PATH 10 PARTITION ZOSTEST CNTLUNIT CUNUMBR 0002 PATH 10 UNITADD 80 IODEVICE ADDRESS 180 CUNUM...

Page 91: ...e original channel path Do the following 1 Configure offline the original channel path CHP 10 in Figure 2 17 2 Configure offline and then online the reassigned channel path CHP 04 in Figure 2 17 3 If...

Page 92: ...he logical partition In Figure 2 17 if ZOSTEST is not active when CHP 04 is reassigned or ZOSTEST is deactivated and then activated after CHP 04 is reassigned ZOSTEST does not activate until the confl...

Page 93: ...ity required for data sharing between the coupling facility and the CPCs directly attached to it Coupling facility channels are point to point connections that require a unique channel definition at e...

Page 94: ...acility ICF feature can be used to provide the backup coupling facility See Internal Coupling Facility ICF on page 2 41 Notes 1 The backup CF in the configuration must provide sufficient storage proce...

Page 95: ...AM RLS You can simplify systems management by using XCF structures instead of ESCON CTC connections IBM does not recommend use of ICFs for most coupling facility structures involved in data sharing be...

Page 96: ...Dynamic coupling facility dispatching is particularly useful in configurations where less than one CP of capacity is needed for the back up coupling facility use Dynamic coupling facility dispatching...

Page 97: ...d coupling facility CP a weight which is much higher than that of the other LPs shared CPs Note that when you define and activate a dynamic ICF configuration for a coupling facility LP dynamic CF disp...

Page 98: ...mode coupling link between each pair of CFs can provide the required CF to CF connectivity however for high availability at least two peer mode links between each pair of CFs are recommended Note that...

Page 99: ...ling facility operation 2 The optional Local Uninterruptible Power Supply supports 0 to 18 minutes of full power operation Setting the Conditions for Monitoring Coupling Facility Nonvolatility Status...

Page 100: ...ailable from the CPC Operational Customization Tasks Area You can define coupling facility LPs with shared or dedicated CPs on all System z9 models Coupling facility LPs must be defined with at least...

Page 101: ...structures it may need to hold in an active take over role Storage resources for coupling facility LPs are static and must be allocated at LP activation time of the coupling facility LP This includes...

Page 102: ...NOTE When implementing a new CFLEVEL in your configuration redetermine the size of List and Cache structures using the CFSizer Utility and update the CFRM policy with the newly acquired values For mor...

Page 103: ...ode LP Coupling Facility Shutdown Considerations IMPORTANT NOTE It is important to properly remove all structures from a coupling facility that will be permanently taken out of the sysplex prior to sh...

Page 104: ...shutdown coupling facility operation v TIMEZONE sets timezone offset from Greenwich Mean Time for a coupling facility v TRACE sets or modifies tracing options Notes 1 Support for the CP and HELP coupl...

Page 105: ...NA NA NA EC F99908 Ver 1 6 2 MCL 020 NA EC F99908 Ver 1 6 2 MCL 018 EC F12017 Ver 1 6 0 MCL 007 EC F12017 Ver 1 6 0 MCL 006 Notes 1 For Coupling Facility Code Levels 0 through 6 refer to Table 2 9 in...

Page 106: ...t support a level 14 coupling facility Level 13 Coupling Facility A level 13 coupling facility CFLEVEL 13 provides the following enhancement v Performance enhancements for Castout CPC Support See Tabl...

Page 107: ...ction of the z OS MVS Setting Up a Sysplex document Level 9 Coupling Facility Enhancements A level 9 coupling facility CFLEVEL 9 provides the following enhancements v Support for WorkLoad Manager WLM...

Page 108: ...tition ID specified on the activation profile for the CF image on the support element or hardware master console must match the number specified in the PARTITION keyword of the CF statement in the pol...

Page 109: ...channel paths in pairs and you must connect each pair You connect an ICP channel path to an ICP channel path by specifying the CPATH keyword on the CHPID statement for every ICP channel path Internal...

Page 110: ...nk be connected to another ICB 3 link and that an ICB 4 link be connected to another ICB 4 link Summary of CPC Support for Integrated Cluster Bus Channels Integrated cluster bus channels are optional...

Page 111: ...definition coupling facility peer channel capability at the coupling facility end of a coupling facility channel connection CIB channel paths are defined for IFB links v Require CIB channel path defi...

Page 112: ...f both channels You must define ICP CHPIDs in pairs and you must connect each pair A connected pair of ICP CHPIDs is called an internal coupling link Both ends of the internal coupling link must be sp...

Page 113: ...facility logical partition using ICMF being migrated the result is that both ICP CHPIDs will be shared by all the ESA logical partitions and also the coupling facility logical partition that they are...

Page 114: ...sors which may then be available for reallocation to other System z9 workloads The IBM JVM processing cycles can be executed on the configured zAAPs with no anticipated modifications to the Java appli...

Page 115: ...the need for many local copies of the data and the complexity that brings On System z9 models you can purchase and install one or more Integrated Facility for Applications IFA features with no effect...

Page 116: ...CFCC patch The enhanced patch apply does not change the characteristics of a concurrent CFCC patch but does significantly enhance the availability characteristics of a disruptive CFCC patch by making...

Page 117: ...P U 9 P U 9 P U 9 C P 0 C P 1 C P 2 C P 3 C P 4 C P 5 C P 6 C P 7 C P 0 C P 0 C P 1 C P 1 C P 2 C P 2 C P 3 C P 3 C P 4 C P 4 C P 5 C P 5 C P 6 C P 6 C P 7 C P 7 C P 8 C P 8 Mixed Shared and Dedicated...

Page 118: ...4 Way Partition 2 3 Way Partition 2 3 Way ICF 1 1 Way ICF 2 1 Way Active Reserved Concurrent PU Upgrade ICF 1 P U 8 P U 9 ICF 1 2 Way ICF 2 1 Way I C F I C F I C F I C F I C F P U 9 Shared Internal C...

Page 119: ...follows the maximum defined logical CP width is as great as the total number of CPs achievable via concurrent CPU upgrade v Maximum initial logical CPs defined for a dedicated partition equals physica...

Page 120: ...r to those for Dynamic Capacity Upgrade on Demand Planning is simple because reserved logical CPs can be specified for logical partitions on the backup system The logical CPs can then be brought onlin...

Page 121: ...rently Concurrent activation of the select new LIC level is only supported at specific sync points points in the maintenance process when LIC may be applied concurrently MCL service level Sync points...

Page 122: ...2 18 the Processor tab displays indicating the corrective actions suggested for the processor configuration Following is a list of tabs that may appear for your particular configuration Processors Use...

Page 123: ...e actions required for the single I O domain configuration conditions that are preventing the Perform Enhanced Book Availability option from being performed for the targeted book You will need to chan...

Page 124: ...Concurrent Processor Unit Conversion The System z9 supports concurrent conversion of different Processor Unit PU types This capability is extended to Central Processor CPs Integrated Facility for Lin...

Page 125: ...hardware the CP Crypto Assist functions CPACF DES TDES must be enabled Many IBM products will take advantage of the cryptographic hardware using ICSF so enabling CPACF is recommended Use the CPC Deta...

Page 126: ...2 72 PR SM Planning Guide...

Page 127: ...CPCs with the Sysplex Failure Manager SFM 3 26 TARGETSYS ALL Examples 3 26 Number of Central Processors 3 28 Maximum Number of Central Processors 3 28 Workload Requirements 3 29 Central Processor Reco...

Page 128: ...3 53 Coupling Facility Logical Partitions 3 53 Channel Path Reconfiguration and Logical Partition Activation 3 53 Dynamic I O Configuration Effects on Channel Path Reconfiguration 3 53 Automatic Chan...

Page 129: ...hannel Paths 3 84 Deconfiguring Shared Channel Paths 3 84 Removing Shared Channel Paths for Service 3 84 Changing Logical Partition Definitions 3 84 Changes Available Dynamically to a Running LP 3 84...

Page 130: ...eporting on page 5 8 The greater the number of active logical CPs relative to the number of physical CPs configured the smaller the dispatch interval Dedicated and Shared Central Processors CPs LPs ca...

Page 131: ...red logical CP on a different physical CP even when no spares are available If a logical CP is still lost the LP owning the logical CP can continue operating if it was running on an LP with at least t...

Page 132: ...nitially in ESA 390 mode at IPL time however during IPL it switches to z Architecture mode 3 z VSE 4 1 is initially in ESA 390 mode at IPL time however during IPL it switches to z Architecture mode z...

Page 133: ...ease in configured storage via concurrent memory upgrade see Concurrent Memory Upgrade on page 2 66 Single Storage Pool With this function all physical storage is dynamically designated by LPAR as eit...

Page 134: ...storage origin input field is fixed at 64 MB Additionally when migrating to these models you must convert the existing central storage amounts that are not in multiples of the storage granularity supp...

Page 135: ...ability to fit the reserved amounts but the reserved amounts can be in use by other LPs that specified origins for storage at the time the LP is activated v The origin for central storage defines the...

Page 136: ...not available for any LPs that do not specify a central storage origin Expanded Storage Optional expanded storage is defined to LPs before LP activation When an LP is activated storage resources are a...

Page 137: ...ffline after LP activation v For reserved expanded storage all of the reserved expanded storage must be available to configure any reserved expanded storage online v Reserved expanded storage for an L...

Page 138: ...an expanded storage origin the reserved expanded storage is only available for the LP when No other LP has this expanded storage address range online There is sufficient physical expanded storage ava...

Page 139: ...s case LPAR can allocate a hole or some set of central storage addresses for which there is no backing physical storage assigned Later LPAR is able to configure storage online to the LP by assigning s...

Page 140: ...deactivate LP B to free up storage directly above LP A Figure 3 2 on page 3 15 shows how you may reconfigure central storage in this case HSA 0 GB 4 GB 8 GB 30GB 1022 GB 32 GB 1024 GB LP A CS0 LP B C...

Page 141: ...S1 LP C LP A CS1 Unused Addressability ORIG 0 INIT 4 GB RSVD 4 GB online to LP A ORIG 8 GB INIT 22 GB RSVD 0 Installed Storage Addressable Storage Figure 3 2 Reconfigured Central Storage Layout Chapte...

Page 142: ...of 14 GB each of central storage a reserved amount of 2 GB and system determined central storage origins LP A and LP B are activated and IPLed At the completion of IPL LP A has its reserved central st...

Page 143: ...able storage size is 2048 MB This leaves 1022 GB of central storage addressability to be allocated to LPs LP A is defined with an initial amount of 14 GB of central storage a reserved amount of 2 GB a...

Page 144: ...GB RSVD 2 GB offline Unused Addressability HSA LP B LP A ORIG system determined INIT 14 GB ORIG system determined INIT 14 GB Backing expanded storage INIT 2 GB Addressable Storage Figure 3 5 Initial C...

Page 145: ...t from the z OS software console for LP A enter CF STOR E 1 ONLINE Figure 3 6 shows the resulting storage layout following these actions The reserved storage is fully reconfigured without an outage to...

Page 146: ...or Figure 3 7 shows an example of expanded storage with dynamic storage reconfiguration capability This figure shows LP A LP B and LP C To reconfigure expanded storage deactivate LP B to free up stora...

Page 147: ...sume that LP C was activated with 1 GB of storage and was then deactivated to arrive at this storage layout The storage range between between 1019 GB and 1021 GB is assigned to LP A for as long as the...

Page 148: ...al storage origins The origin of central storage used to back online expanded storage is always system determined and in this case is coincidentally but not necessarily contiguous with the addressabil...

Page 149: ...tem determined INIT 14 GB Backing expanded storage INIT 2 GB Addressable Storage Figure 3 10 Initial Central Storage Layout 0 GB 1020 GB 1022 GB 1024 GB RSVD 2 GB offline Unused Addressability LP A IN...

Page 150: ...Figure 3 13 on page 3 25 show the resulting central storage and expanded storage layouts following these actions The reserved storage expanded storage is fully reconfigured without an outage to LP A...

Page 151: ...ith 0 MB and build upward When both central and expanded storage require origins map the storage in the same order for both central and expanded storage If no origin is specified for an LP the system...

Page 152: ...SFM v Cross Partition System Reset This function causes a specified LP to be reset The reset is accomplished via the RESETTIME nnn keyword in the SYSTEM statement of the z OS SFM policy v Cross Parti...

Page 153: ...RSVD 0 ORIG 2 GB INIT 4 GB RSVD 0 ORIG 0 INIT 1 GB RSVD 0 ORIG 1 GB INIT 1 GB RSVD 28 GB Installed Storage Addressable Storage Figure 3 14 Backup Partition Layout Before Nonspecific Deactivation HSA 0...

Page 154: ...ber of CPs for an LP The Number of processors field is located on the Processor page for the LP Maximum Number of Central Processors The maximum number of CPs that can be defined depends on v The numb...

Page 155: ...wo way LPs all one way LPs or a mix of one way and two way LPs Three two way LPs should only be considered if all LPs have peak demands exceeding the capacity of a one way CPC In this instance the ave...

Page 156: ...traditional operating systems such as z OS TPF or z VSE Only Linux or z VM Version 5 with only Linux users can run in a Linux Only mode LP Logical partitions defined as Linux Only that attempt to loa...

Page 157: ...oupling facility LP If you cap processing weights and you are running a coupling facility LPAR attempts to support the cap but may not be successful and the system can be less responsive v A CF with s...

Page 158: ...em reset of a system or logical partition that was communicating with connected to a coupling facility can temporarily cause a considerable increase in the demands placed on the coupling facility v Al...

Page 159: ...be less stringent If this is the case try decreasing the weight of the coupling facility LP so that each coupling facility logical CP receives for example 40 50 of physical CP resources As the total...

Page 160: ...v RMF reports the data for a dynamic ICF expansion partition on two lines one line to report the dedicated ICF CPs and a second line to report the shared general purpose or shared ICF CPs v The proces...

Page 161: ...nd the LP processing weight is 80 10 per CP Another coupling facility LP is defined with 1 dedicated ICF and one shared general purpose CP with a weight of 250 This allows the z OS LP to normally get...

Page 162: ...l CPs is 16 For coupling facility considerations see Processor Considerations for Coupling Facility LPs on page 3 30 Use the Customize Delete Activation Profiles task available from the CPC Operationa...

Page 163: ...ive more than its processing share when there is excess CP capacity provided it has work to do and other LPs are not using their share v An LP will receive less than its processing share when its work...

Page 164: ...The calculations shown in previous examples as well as the examples to follow are done independently for general purpose ICF IFA IFL or zIIP processors on a machine that has them Processing Weights f...

Page 165: ...ap processing weight for an LP This change would take effect when the partition is activated An LP s relative weight is divided by the number of shared logical CPs online for the LP to give the share...

Page 166: ...ime interval of service per every 100 milliseconds For example for a typical 12 5 millisecond run time interval each logical CP gets 1 8th of a physical CP Processing Weight Management Examples For th...

Page 167: ...weight for an LP The Processing weight field is located on the Processor page for the LP 2 The logical CPs for LP C 2 fall outside the enforceable range because each logical CP s share is only 40 of...

Page 168: ...of 20 for ZOSTEST the capped LP Capping in a Single Logical Partition In order to use capping for an LP on a CPC where there is a need for only one active LP using shared CPs you must define and acti...

Page 169: ...en the processor running time is dynamically determined by the system the calculation of the default running time is performed separately for general purpose and ICF CPs All logical processors that ar...

Page 170: ...tion Yes time driven dispatching When the resource is divided on an event driven basis switching between users is done as the result of some event such as a wait or an interruption When the resource i...

Page 171: ...as defined by the installation Any resource given to a particular LP is taken away from another LP in the LPAR cluster LPs whose workloads are of the same importance level should all have similar perf...

Page 172: ...ers of a parallel sysplex might not be members of the same LPAR cluster A given parallel sysplex can have member LPs that belong to multiple LPAR clusters each on a different CPC v Identify logical pa...

Page 173: ...when on IPL it leaves the cluster Software can then rejoin the same or a different cluster again donating its initial weight to the sum available for the entire cluster Enabling Management of Linux Sh...

Page 174: ...er within the same CSS Only one LP can access I O devices on this channel path at a time dedicated An unshared and nonreconfigurable channel path Only one LP can access I O devices on this channel pat...

Page 175: ...can connect shared or unshared CNC or FCV channel paths to shared or unshared CTC channel paths for the purpose of CTC communication The connected CNC or FCV and CTC channel paths can be on the same...

Page 176: ...performance goals of the associated workloads It is recommended that you establish a range of I O priorities for z VM logical partitions that is sufficient to enable effective discrimination among gue...

Page 177: ...ty for global performance data can view CP utilization data and Input Output Processor IOP busy data for all of the LPs in the configuration Additionally gathering of FICON channel measurements requir...

Page 178: ...5 CP Planning and Administration SC24 6083 and z VM I O Configuration SC24 6100 Planning and Operation Considerations Guidelines for planning and operating in a dynamic I O environment are detailed in...

Page 179: ...last configured to this LP and were not yet reconfigured to another LP are also targeted to be configured online to this LP at its next activation However the targeting of a channel path may change pr...

Page 180: ...this rule is when a newly written IOCDS is first used as part of a dynamic I O change to the system For example the new IOCDS is used as a result of a Switch IOCDS for Next POR action by HCD or the n...

Page 181: ...or tasks and accurate task and panel references are left to the appropriate operator guides See the Hardware Management Console Operations Guide and Support Element Operations Guide LP definitions are...

Page 182: ...ime offset Load information v Load during activation v Load address v Use of dynamically changed address v Load parameter v Use of dynamically changed parameter v Time out value Cryptographic characte...

Page 183: ...st to open a reset profile Options Page Definitions Open the Options page to define the following LP characteristics v Processor running time v Enablement of event driven dispatching v Enable global i...

Page 184: ...tion to allow the system to dynamically calculate the length of CP time dispatched The default is selected for this checkbox Determined by the user Select this option to manually set the length of CP...

Page 185: ...rofile Open the Partitions page to define the following LP characteristics v LP automatic activation order Parameter Descriptions Partition LP name Order Enter a number indicating when the LP will be...

Page 186: ...r identifies the LP and is used as the third and fourth hexadecimal digit of the operand stored by the Store CPU ID Instruction for each logical CP in the LP The partition identifier must be unique fo...

Page 187: ...tem time value by the amount shown Select this choice to set the logical partition s clock back from the time of day supplied by its time source by the number of days hours and minutes in the offset U...

Page 188: ...of day supplied by its time source by the number of days hours and minutes in the offset Use this setting to provide a local time zone EAST of GMT or a date and time in the future 3 62 PR SM Planning...

Page 189: ...ng v Workload manager enablement v Minimum processing weight v Maximum processing weight Figure 3 20 ESA Mode Logical Partition with shared Central Processors CPs Integrated Facilities for Application...

Page 190: ...e 3 21 Customization for a Linux Only Mode Logical Partition with shared Integrated Facilities for Linux IFLs There can be both an initial and reserved specification for the IFLs 3 64 PR SM Planning G...

Page 191: ...rocessors for each Not dedicated processor details Select the processor CPs IFAs or zIIPs to display details such as Initial processng weight Initial capping and Enable workload manager Dedicated cent...

Page 192: ...acility partition should be dedicated to that logical partition if it is used used for primary production workload If you want the logical processors to share not dedicated internal coupling facility...

Page 193: ...LP Capping has no effect on LPs with dedicated CPs Enable WorkLoad Manager Select this option so that CPU and I O resources can be managed by WLM using IRD clustering technology Minimum processing we...

Page 194: ...rational Customization tasks list to open a reset or image profile for an LP Open the Security page to define the following LP characteristics v Global performance data control v Input output I O conf...

Page 195: ...Figure 3 23 Security Page Image Profile Chapter 3 Determining the Characteristics of Logical Partitions 3 69...

Page 196: ...on control Select this option to allow the LP to read or write any IOCDS in the configuration and to make dynamic I O changes Additionally this parameter allows the OSA Support Facility for z OS z VM...

Page 197: ...omization tasks list to open a reset or image profile for an LP Open the Options page to define the following LP characteristics v Minimum input output I O priority v Maximum input output I O priority...

Page 198: ...er the maximum priority to be assigned to I O requests from this logical partition Defined capacity Enter the upper bound in terms of millions of service units MSUs beyond which the rolling 4 hour ave...

Page 199: ...page 3 8 for a discussion of the appropriate entries for these fields Initial Enter in MB the initial amount of central storage to be allocated to the LP at activation Reserved Enter in MB the amount...

Page 200: ...torage to be allocated to the LP at activation Enter a value that is compatible with the storage granularity supported by your CPC Reserved Enter in MB the amount of additional expanded storage reques...

Page 201: ...e following LP characteristics v Load during activation v Load address v Load parameter v Load timeout value Parameter Descriptions Load during activation Selecting this option allows initial program...

Page 202: ...oad parameter Enter a 1 to 8 character optional IPL load parameter for loading an operating system on each activation of the LP This is useful for loading z OS or z VSE Use dynamically changed paramet...

Page 203: ...View LPAR Cryptographic Controls page see Reviewing Current Logical Partition Cryptographic Controls on page 5 6 Parameter Descriptions Control domain index The Control Domain Index identifies the Cr...

Page 204: ...Customize Image Profiles panel allows you to define duplicate combinations of Cryptographic number s and Usage Domain Index es such logical partitions cannot be concurrently active This is a useful op...

Page 205: ...or the following Crypto numbers Table 3 6 Example Selection of Crypto Numbers Feature Adapter Crypto Configuration Type Crypto Number Crypto Express2 1 1 Accelerator A 00 Crypto Express2 1 2 Accelerat...

Page 206: ...ge Domain 2 on X02 and X05 It is very important to make the correct Crypto number assignments in the Cryptographic Candidate List for each of these logical partitions to avoid assignment conflicts Ins...

Page 207: ...ge LPAR I O priority queuing task available from the CPC Operational Customization tasks list to set the minimum and maximum I O priority queuing values for logical partitions Note Minimum I O Priorit...

Page 208: ...same value The value chosen will be assigned to that logical partition as a constant priority value relative to all other logical partitions This way even logical partitions that do not employ IRD tec...

Page 209: ...Select the LP that owns the channel path to display channel path information for the LP 2 Select a reconfigurable channel path from the CHPIDs work area Drag and drop the CHPID on the Reassign Channel...

Page 210: ...perations task list to configure the CHPID offline The shared channel path will be physically deconfigured when the last LP that had the channel path online configures it offline Removing Shared Chann...

Page 211: ...in the reset profile to change the LP automatic activation order v Use the General page in the image profile to change the Logical partition identifier Mode of the LP Enablement of the Logical partiti...

Page 212: ...Cryptographic Online List Changes Available at the Next Power On Reset POR The following changes are available at the next power on reset v Use the Options page in the reset profile to change the Glob...

Page 213: ...Operator Tasks 4 5 Editing Activation Profiles 4 5 Reset Profiles 4 5 Image Profiles 4 5 Load Profiles 4 5 Activating a CPC 4 5 Activating an LP 4 5 Performing a Load on an LP or Activating a Load Pro...

Page 214: ...very CPC Recovery CPC Recovery CPC Recovery CPC Recovery CPC Recovery CPC Recovery Service Status View Service History Checkout Tests Report a Problem Transmit Service Data Dump LPAR Data Delete LPAR...

Page 215: ...Feature Information Channel PCHID Assignment View On Off CoD Feature Information Cryptographic Configuration Cryptographic Management Display NPIV Config CPC Configuration CPC Configuration CPC Confi...

Page 216: ...ailable The following tasks are not available when logged on in system programmer mode v Enable TOD v Change Operation Rate v Stop on I O Address Match v Stop on I O Event v Stop on PSW Event v Trace...

Page 217: ...ly Tasks task list This will activate the hardware system and if LP activation sequence is enabled for LPs will activate those LPs in the order specified in the reset profile for the CPC You can also...

Page 218: ...rforming disruptive tasks on an LP You can lock the following tasks v Daily tasks Activate Reset Normal Deactivate v CPC Recovery tasks Start all Stop all Reset Normal Reset Clear Load Power on Reset...

Page 219: ...sign Channel Path Channel Problem Determination Deactivating a CPC Deactivate a CPC by dragging and dropping the CPC icon onto the Deactivate task available from the Daily Tasks tasks list This will d...

Page 220: ...4 8 PR SM Planning Guide...

Page 221: ...anging Current Logical Partition Security 5 5 Reviewing Current Logical Partition Cryptographic Controls 5 6 Reviewing Current System Activity Profile Information 5 6 Reviewing and Changing Logical Pa...

Page 222: ...ion for LPs currently activated on the CPC For this example assume the amount of installed storage is 32768 32 GB The amount of physical central storage used by hardware system area HSA is 1280 MB lea...

Page 223: ...n still optionally continue to define an individual LPAR capacity limit LPAR group capacity limit requires that all LPARs to be managed in the group be running z OS or z OS e V1 8 or later LPAR group...

Page 224: ...tion For information about how workload management and workload license charges relate to the Group Capacity setting see z OS MVS Planning Workload Management SA22 7602 Figure 5 3 Change LPAR Group Co...

Page 225: ...Use the Change LPAR Security task available from the CPC Operational Customization tasks list to display and modify LP security controls for an LP Figure 5 4 Change Logical Partition Security Page Cha...

Page 226: ...phic configuration for the logical partition Reviewing Current System Activity Profile Information Use the System activity profiles task available from the Daily Tasks tasks list to open a System acti...

Page 227: ...nge LPAR I O Priority Queuing task available from the CPC Operational Customization tasks list to display and modify I O priority queuing values for one or more LPs Figure 5 6 Change LPAR I O Priority...

Page 228: ...ocessor utilization reporting includes LPAR Management Time on the Partition Data Report RMF provides information about all shared logical CPs that remain active for the duration of the reporting inte...

Page 229: ...everal systems as LPs with shared CPs on a CPC can improve responsiveness and increase ETR CPENABLE The z OS CPENABLE parameter can be used to provide selective enablement for I O interrupts On System...

Page 230: ...nimal impact on any LP that must remain active For example the failure of a physical CP causes the temporary loss of the logical CP that was dispatched on the physical CP The LP owning that logical CP...

Page 231: ...r the LP providing the 1 way LP is being run on a model with more than one physical CP Transparent Sparing Transparent sparing takes LP recovery one step further by combining the benefits of applicati...

Page 232: ...5 12 PR SM Planning Guide...

Page 233: ...1559 1559 1559 1559 519 519 Facility information 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes 64 bytes Maximum list element characteristic 4 4 4 4 4 4 4 4 4 Maximum lock ta...

Page 234: ...table entry is 32 The size of a lock table entry in bytes equals 2 lock table entry characteristic User identifier limit The maximum number of users and list notification vectors that can be attached...

Page 235: ...e the efficiency and cost effectiveness of security evaluations and the certification validation process for IT products and protection profiles The purpose of this arrangement is to advance those obj...

Page 236: ...partition s resources are defined by the security administrator prior to the activation of the logical partition These resources include storage size number of logical processors scheduling parameters...

Page 237: ...than the total number available This is important so that some processors are available for partitions that do not have dedicated access v Dynamic I O Configuration changes should be disabled i e Cha...

Page 238: ...security log to insure that no records are lost v When the security log is successfully off loaded to removeable media the active log is pruned so that it does not exceed 20 of it s capacity If the a...

Page 239: ...c I O Configuration and Dynamic CHPID Management are available in the trusted product they should never be used in secure installation If the IOCDS were to specify I O sharing it would be indicated in...

Page 240: ...CHPID are restricted to the partitions included in the device candidate list specified in the IODEVICE PARTITION parameter If the IOCDS does not specify sharing then no sharing of CHPIDs will take pl...

Page 241: ...st use of a newly created IOCDS activation configures all channel paths to the logical partitions as defined by the IOCDS The subsequent movements of reconfigurable channel paths from one logical part...

Page 242: ...at a secure configuration results LPAR Input Output Configurations v In general I O devices must not be shared by logical partitions since they can be used to pass information from one partition to an...

Page 243: ...on s initial security settings are set in the image profile used to activate it Afterwards the change LPAR security task can be used to view or change the settings Changes must be saved in the profile...

Page 244: ...O throughput across an LPAR cluster by sharing CHPIDs among partitions who have joined the cluster Any logical partition that is WLM enabled may join the cluster and therefore share CHPIDs reserved fo...

Page 245: ...the security log is successfully off loaded to removeable media the active log is pruned so that it does not exceed 20 of it s capacity If the active security log is below 20 then no entries are remov...

Page 246: ...tative for maintenance it is advisable to idle the partitions perform an orderly shutdown of the applications and control programs occupying the partitions followed by stopping each partition rather t...

Page 247: ...graphic keys DES and PKA master keys and operational keys A unique set of cryptographic keys is maintained for each domain index within the cryptographic facility Only one partition can perform TKE Wo...

Page 248: ...Use the manuals listed in this section as needed for background or supplemental information Check the edition notices in the beginning of each manual for correspondence to the appropriate driver leve...

Page 249: ...Enterprise SC28 8135 Enterprise Systems Architecture 390 ESCON I O Interface SA22 7202 Introducing Enterprise Systems Connection GA23 0383 z OS MVS System Commands SA22 7627 z OS MVS Planning Operatio...

Page 250: ...B 16 PR SM Planning Guide...

Page 251: ...RANTIES OF NON INFRINGEMENT MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Some states do not allow disclaimer of express or implied warranties in certain transactions therefore this statement ma...

Page 252: ...the products described become available This information contains examples of data and reports used in daily business operations To illustrate them as completely as possible the examples include the n...

Page 253: ...t installed and used in accordance with the instructions contained in the installation manual may cause harmful interference to radio communications Operation of this equipment in a residential area i...

Page 254: ...ration of Conformity In German Deutschsprachiger EU Hinweis Hinweis f r Ger te der Klasse A EU Richtlinie zur Elektromagnetischen Vertr glichkeit Dieses Produkt entspricht den Schutzanforderungen der...

Page 255: ...h EN 55024 und EN 55022 Klasse A update 2004 12 07 People s Republic of China Class A Compliance Statement This is a Class A product In a domestic environment this product may cause radio interference...

Page 256: ...Warning This is a Class A product In a domestic environment this product may cause radio interference in which case the user will be required to take adequate measures C 6 PR SM Planning Guide...

Page 257: ...ccurs active logical partition An operator initiated procedure that performs a system reset to a logical partition and assigns the previously defined hardware to that partition It causes an automatic...

Page 258: ...ated functions central processor complex CPC A physical collection of hardware that consists of central storage one or more central processors timers and channels central storage Storage that is an in...

Page 259: ...it coupling facility control code The Licensed Internal Code LIC that runs in a coupling facility logical partition to provide shared storage management functions for a sysplex CP Central processor C...

Page 260: ...uses optical cables as a transmission medium ESCON Director ESCD A device that provides connectivity capability and control for attaching any two links to each other ESCON environment The data proces...

Page 261: ...addresses latches or storage contents to zero or to other starting values at the beginning of or at the prescribed points in a computer program or process input output I O 1 Pertaining to a device who...

Page 262: ...sely one million bytes monitor A device that observes and records selected activities within a data processing system for analysis multidrop A network configuration in which there are one or more inte...

Page 263: ...ion path between a channel and a control unit and does not include switching facilities Contrast with switched point to point topology See also multidrop topology POR Power on reset PR SM Processor Re...

Page 264: ...ESCD each of which attaches to a control unit This configuration depends on the capabilities of the ESCD for establishing and removing connections between channels and control units Contrast with poin...

Page 265: ...e used to represent a data item whose value can be changed while the program is running virtual machine VM 1 A virtual data processing system that appears to be at the exclusive disposal of a particul...

Page 266: ...D 10 PR SM Planning Guide...

Page 267: ...3 11 CFCC patch apply 2 62 changing LP definitions changes available at the next LP activation 3 85 changes available dynamically 3 84 IOCDS through 3 85 channel paths access list 3 48 assigning 3 52...

Page 268: ...on 2 42 dynamic storage reconfiguration operation consideration 3 25 storage 3 7 central storage origin 3 9 central initial 3 8 configuration 3 12 expanded initial 3 10 expanded origin 3 11 reserved c...

Page 269: ...6 overview 1 14 IRD 3 29 isolated LP 3 50 K keyword IOCP RESOURCE 2 28 SHARED 2 28 2 30 L Linux planning considerations 2 59 logical partitioning logical vary 1 2 logical partitions automatic IPL 3 55...

Page 270: ...5 planning 2 6 recovery continued strategy 5 10 related publications xx relative percentage maintaining 3 42 report management facility 1 21 2 28 3 51 5 8 reserved central storage 3 9 expanded storage...

Page 271: ...oad balancing 2 13 requirements CP 3 29 workload charging by soft capping to a defined capacity 3 46 workload manager LPAR CPU management of shared CPs 3 45 X XRF See extended recovery facility Z z VM...

Page 272: ...X 6 PR SM Planning Guide...

Page 273: ......

Page 274: ...Printed in USA SB10 7041 03...

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