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 G-H
gateway
Equipment which is used to interface networks so that a terminal on one network
can communicate with services or a terminal on another.
gradual recovery
Previously called "cold stand-by", this is applicable to organizations
that do not need immediate restoration of business processes and can function
for a period of up to 72 hours, or longer, without a re-establishment of full IT
facilities. This may include the provision of empty accommodation fully equipped
with power, environmental controls and local network cabling infrastructure,
telecommunications connections, and available in a disaster situation for an
organization to install its own computer equipment.
hard charging
Descriptive of a situation where, within an organization, actual funds are
transferred from the customer to the IT organization in payment for the delivery
of IT services.
hard fault
The situation in a virtual memory system when the required page of code or data
that a program was using has been redeployed by the operating system for some
other purpose. This means that another piece of memory must be found to
accommodate the code or data, and will involve physical reading/writing of pages
to the page file.
host
A host computer comprises the central hardware and software resources of a
computer complex, e.g., CPU, memory, channels, disk and magnetic tape I/O
subsystems plus operating and applications software. The term is used to denote
all non-network items.
hot stand-by
See "immediate recovery".
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