Mainframe computer consists of below hardware devices -
1) CPC - Central Processing Complex
Central processing complex has more than one central processing units.
2) DASD (Disk drives) - Direct access storage device
DASD is like hard disk in personal computers, it is secondary storage in mainframe. Commonly used DASDs are 3390.
3) TAPE -
TPAE devices are like old cassettes. As per requirement system operators can mount the TAPEs.
5) I/O Devices (PCs) - Application programmers can develop application through I/O devices. These devices are connected to mainframe through Ethernet.
Please find below structure of Mainframe :
1) CPC - Central Processing Complex
Central processing complex has more than one central processing units.
2) DASD (Disk drives) - Direct access storage device
DASD is like hard disk in personal computers, it is secondary storage in mainframe. Commonly used DASDs are 3390.
3) TAPE -
TPAE devices are like old cassettes. As per requirement system operators can mount the TAPEs.
4) Terminal -
Terminal are used by System operators to perform different activities like modifications, upgradations, start up or shut down of mainframe systems. Commonly used terminals are 3270.
Please find below structure of Mainframe :
Great information about mainframe os.
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