H

Termos e Definições - H

Hardware Configuration Definition (HCD)
The channel subsystem (CCS) and the z/OS operating system need to know what hardware resources are available in the computer system and how these resources are connected. This information is called "hardware configuration".

Hardware Configuration Definition (HCD) provides an interactive interface that allows you to define the hardware configuration for both the channel subsystem and the operating system.

Before HCD was available, you had to use IOCP to define the hardware to the channel subsystem and the MVS Configuration Program (MVSCP) to define the hardware to the MVS operating system. The following sections explain in what way HCD differs from MVSCP and IOCP when defining, validating and reconfiguring configuration data.

What HCD does:

The configuration you define with HCD may consist of multiple precessors, each containing multiple partitions. HCD stores the entire configuration data in a central repository, the input/output definition file (IODF). The IODF as single source for all hardware and software definitions for a multi-processor or multi-partition system eliminates the need to maintain several independet MVSCP or IOCP data sets. That means that you enter the information only once using an interactive dialog.

HSM:
HSM (DATA FACILITY HIERARCHICAL STORAGE MANAGER).
DFHSM is a tool used by STORAGE MANAGEMENT to manipulate user data. It allows the automatic recall of data by the user, incremental backup of data, generic naming conventions which will facilitate the conversion of DASD device types, and more efficient MVS device allocation processes.

HMC:
Hardware Management Console é um aplicativo gráfico instalado no Service Element (e este por sua vez comunica-se com a BOX através do Central Processor Complex (CPC)), e permite o gerenciamento de Hardware da BOX e das LPAR's configuradas nas mesmas (onde serão instalados e configurados os sistemas), incluindo, definir quanto de processamento será disponibilizado para cada LPAR, configuração e gerenciamento de paths e chipids, reinicialização ou desligamento das LPARs ou mesmo da BOX, endereçamento de discos, endereçamento do IOCDS, etc.

HSA Area
The I/O control layer uses a contrl file know as an IOCDS (I/O Control Data Set) that translates physical I/O addresses (composed of CHPID numbers, switch port numbers, control unit addresses , and unit addresses) into device numbers that are used by the operating system software to access devices. This is loaded into the Hardware Save Area (HSA) at power-on and can be modified.

HACMP (High Availability Clustered Multiprocessing)
An IBM RS/6000 product designed to provide a high-availability configuration by enabling automated failover from one RS/6000 to another.

HiPerLinks (High-Performance Links)
A high-speed coupling-link technology introduced by IBM in 1997 for its S/390 mainframes.

HLLAPI (High-Level Language Application Programming Interface)
An IBM "screen scraping" standard that enables mainframe applications to be accessed using a PC.

HPNA (Home Phoneline Networking Alliance)
An alliance to advance technologies for high-speed local-area networking over conventional phone wires. It was founded in 1998 by 3Com, Advanced Micro Devices, AT&T Wireless Services, Compaq Computer, Conexant Systems, Hewlett-Packard, IBM, Intel, Lucent Technologies and Tut Systems.

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