should be used instead of Global Copy.
See also
Global Mirroring
,
remote mirroring
,
Metro Mirroring
.
Global Mirroring
Refers to a remote logical drive mirror
pair that is set up using Global Copy with
the write consistency group option. This
is also referred to as ''Enhanced Global
Mirroring with Consistency Group'.
Global Mirroring ensures that write
requests to multiple primary logical
drives are carried out in the same order
on the secondary logical drives as they
are on the primary logical drives,
preventing data on the secondary logical
drives from becoming inconsistent with
the data on the primary logical drives.
See also
Global Copy
,
remote mirroring
,
Metro Mirroring
.
graphical user interface (GUI)
A type of computer interface that presents
a visual metaphor of a real-world scene,
often of a desktop, by combining
high-resolution graphics, pointing devices,
menu bars and other menus, overlapping
windows, icons, and the object-action
relationship.
GUI
See
graphical user interface.
HBA
See
host bus adapter
.
hdisk
An AIX term representing a logical unit
number (LUN) on an array.
heterogeneous host environment
A host system in which multiple host
servers, which use different operating
systems with their own unique disk
storage system settings, connect to the
same DCS3860 storage system at the same
time. See also
host
.
host
A system that is directly attached to the
storage system through a fibre-channel
input/output (I/O) path. This system is
used to serve data (typically in the form
of files) from the storage system. A
system can be both a storage management
station and a host simultaneously.
host bus adapter (HBA)
An interface between the fibre-channel
network and a workstation or server.
host computer
See
host
.
host group
An entity in the storage partition
topology that defines a logical collection
of host computers that require shared
access to one or more logical drives.
host port
Ports that physically reside on the host
adapters and are automatically discovered
by the DCS3860 Storage Manager
software. To give a host computer access
to a partition, its associated host ports
must be defined.
hot swap
To replace a hardware component without
turning off the system.
hub
In a network, a point at which circuits are
either connected or switched. For
example, in a star network, the hub is the
central node; in a star/ring network, it is
the location of wiring concentrators.
IBMSAN driver
The device driver that is used in a Novell
NetWare environment to provide
multipath input/output (I/O) support to
the storage controller.
IC
See
integrated circuit
.
IDE
See
integrated drive electronics
.
in-band
Transmission of management protocol
over the fibre-channel transport.
Industry Standard Architecture (ISA)
Unofficial name for the bus architecture of
the IBM PC/XT personal computer. This
bus design included expansion slots for
plugging in various adapter boards. Early
versions had an 8-bit data path, later
expanded to 16 bits. The "Extended
Industry Standard Architecture" (EISA)
further expanded the data path to 32 bits.
See also
Extended Industry Standard
Architecture
.
initial program load (IPL)
The initialization procedure that causes an
operating system to commence operation.
Also referred to as a system restart,
system startup, and boot.
integrated circuit (IC)
A microelectronic semiconductor device
that consists of many interconnected
transistors and other components. ICs are
constructed on a small rectangle cut from
Glossary
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