MF ----LEARN NOTES

MF 

OS/360 -> OS/370 ->OS/390  UNIT 1

HARDWAQRE

OS

WHAT IS OS/390

OS ,MVS

Cpc  including:  equals uniprocessor

subChannel system  hardware 

storage

os/390  

central processor

single image mode /typical classic

non-partitionable multiprocessor:

cp  cp  cp cp

os/390

storage

Channel Sysem

Partitionable multiprocessor|physical Partition mode

cp    cp                    cp cp

os/390                      os/390

storage                     storage

channel system(css)                     channel system(css)

logical partitioning-LPAR  MODE

CENTRAL PROCESSOR

PR/SM  àhardware processore reside /system management

OS/390       OS/390

STORAGE     STORAGE

CSS          CSS

Loosely couple system

OS1   ----------------------        OS2 (by CTC(hardware)/(grs/js)software)

   \             / 

Shared dasd

Software :    GRS/JS  job submit

SYSPLEX –SYTEM COMPLEX (point-to-point connection number of connection=(n-1)n/2 n means number of os)

HARDWARE:

SHARED DASD

 CTC , CHANEL TO CHANEL

TIMER

SOFTWARE :

XCF  CROSS-SYSTEM COUPLE SYSTEM –protocol

Parallel sysplex –start mode (conneciton )

Coupling facility hardware(n=2)

The of of CF  -------cfcc

CFCC  WITHOUT DASD

SHARED DASD

CF(HARDWARE)

FIBRE CONNECTION

TIMER

SOFTWARE

XCF

THE COMMUNICTION BETWEEN CF—OS IS  XES