HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 30

Mainframe hardware definition

Hardware definition using IOCP (MVS, VM, or VSE)

The I/O Configuration Program (IOCP) can be used to define the storage system in MVS, VM, and

VSE environments (wherever HCD cannot be used). The storage system supports up to 255 control

unit (CU) images and up to 65,280 LDEVs. Each CU image can hold up to 256 LDEV addresses. A

CU image is the same as an IBM logical sub-system (LSS). The CUADD parameter defines a CU image

by its control unit address, which can be 0 to F for ESCON connectivity, or 00 to FE for FICON/zHPF

connectivity. ESCON connectivity can be used with CU types 3990, 2105, and 2107. FICON/zHPF

connectivity can be used with CU types 2105 (2105-F20 or later) and 2107.

CAUTION:

The following are cautions when using IOCP or HCD:

•

When multiple LPARs/mainframes can access the volumes, use FEATURE=SHARE for the devices.

•

Up to 16,384 addresses per physical interface are allowed by MVS with FICON/zHPF channels.

Multiple groups of FICON/zHPF channels may be used to access the maximum of 65,280 devices

that can be configured using 255 control unit images (CUADD=00 through CUADD=FE in the

CNTLUNIT statement).

•

Up to 1,024 addresses per physical interface are allowed by MVS with ExSA (ESCON) channels.

(This includes PAV base and alias addresses.) ESCON interfaces support up to 4,096 devices for

each set of 16 CU images using CUADD=0 through CUADD=F in the CNTLUNIT statement. ESCON

channel interfaces can be assigned to access individual groups of 16 CU images.

The following example shows a sample IOCP definition for a storage system configured with:

•

2105 ID

•

Four FICON/zHPF channel paths. Two channels paths are connected to a FICON switch. Two

channel paths are directly connected to the storage system.

•

Six control unit images (00

–

05) with 256 LVIs per control unit

•

64 base addresses and 128 alias addresses per CU 00, 01, 02, and 03

•

128 base addresses and 128 alias addresses per CU 04 and 05

******************************************************

**** Sample FICON CHPID / CNTLUNIT and IODEVICE ******

******************************************************

CHPID PATH=(F9),TYPE=FC,SWITCH=07

CHPID PATH=(FB),TYPE=FC

CHPID PATH=(FD),TYPE=FC

CHPID PATH=(FF),TYPE=FC,SWITCH=07

*

CNTLUNIT CUNUMBR=8100,PATH=(F9,FB,FD,FF),

*

LINK=(04,**,**,05),

*

UNIT=2105,CUADD=00,UNITADD=((00,256))


*

LINK=(04,**,**,05),

*



*

LINK=(04,**,**,05),

*



*

LINK=(04,**,**,05),

*



*

LINK=(04,**,**,05),

*

Mainframe operations

30

Section	Page
XP Disk Array Mainframe Host Attachment and Operations Guide	1
Contents	3
1 Overview of mainframe operations	7
Mainframe compatibility and functionality	7
Connectivity	8
Program products for mainframe	9
2 FICON/zHPF and ESCON host attachment	11
FICON/zHPF and ESCON for zSeries hosts	11
Setting up ESCON and FICON/zHPF links	11
Multi-pathing for ESCON and FICON/zHPF	11
Attaching ESCON CHAs	11
ESCON connectivity on zSeries hosts	12
Host Adapters, cables, distances, and specifications for ESCON adapters on zSeries hosts	12
Cable lengths and types for ESCON adapters on zSeries hosts	13
Logical paths and path groups for ESCON adapters on zSeries hosts	13
Data transfer for ESCON adapters on zSeries hosts	13
Directors and channel extenders for ESCON adapters on zSeries hosts	13
Identifying the port for TSO commands on zSeries hosts	13
Attaching FICON/zHPF CHAs	14
FICON/zHPF physical specifications	14
FICON/zHPF logical specifications	15
FICON/zHPF operating environment	16
FICON and FICON/zHPF protocol sequence	16
Hardware specifications	17
FICON CHAs	17
Logical paths	18
Supported topologies	20
Point-to-point topology	20
Switched point-to-point topology	20
Cascaded FICON topology	21
Required high-integrity features	23
Viewing path information	24
Physical host connection specifications	24
Logical host connection specifications	25
Enabling XPfor Compatible High Perf FICON connectivity software (zHPF) operations	26
Activating the zHPF program product	26
Enabling the zHPF function	26
Installing zHPF in a switch cascading configuration	27
Uninstalling the FICON/zHPF program product	27
3 Mainframe operations	29
Mainframe configuration	29
Storage subsystem IDs	29
Mainframe hardware definition	30
Hardware definition using IOCP (MVS, VM, or VSE)	30
Hardware definition using HCD (MVS/ESA)	32
Defining the storage system to VM/ESA and z/VSE systems	42
Defining the storage system to TPF	42
Defining the storage system to mainframe Linux	42
Mainframe operations	43
Initializing the LVIs	43
Device operations: ICKDSF	43
z/OS (MVS) Cache operations	45
zVM (VM/ESA) Cache operations	46
zVSE (VSE/ESA) Cache operations	47
4 Linux operations	49
Overview of zLinux operations	49
Running Linux on S/390 or zSeries hosts	49
Attaching FCP adapters to zSeries hosts running Linux	50
FCP support	50
Accessing storage units using FCP protocol from a zSeries host	50
Setting up storage units for zSeries hosts running Linux	51
Setting up a Linux system to use FCP protocol devices on zSeries hosts	52
Adding permanent devices for zSeries hosts running Linux	52
FICON and ESCON migration overview	53
Migrating from ESCON to native FICON	53
Native ESCON configuration	53
ESCON to FICON migration example for a zSeries or S/390 host	54
FICON configuration example for a zSeries or S/390 host	56
Migrating from a FICON bridge to a native FICON attachment	57
FICON bridge overview	57
FICON bridge configuration	57
FICON and FICON channel mixed configuration	57
Native FICON configuration on a zSeries or S/390 host	58
RSCNs on zSeries hosts	59
5 Troubleshooting	61
Troubleshooting	61
SIMs	61
6 Support and Other Resources	63
Contacting HP	63
Subscription service	63
Related Information	63
HP websites	63
Conventions for storage capacity values	64
HP product documentation survey	64
Glossary	65

HP XP20000/XP24000 HP StorageWorks XP Disk Array Mainframe Host Attachment and - Page 30

Mainframe hardware definition, Hardware definition using IOCP (MVS, VM, or VSE)

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