SMTP gateway
An external host that is used to relay
e-mail messages through the SMTP
protocol.
snapshot set
The resulting set of synchronized
snapshots of a volume set in a consistency
group. See also consistency group, Volume
set.
snapshot
A point-in-time snapshot or copy of a
volume. See also image snapshot.
SNMP agent
A device that reports information through
the SNMP protocol to SNMP managers.
SNMP manager
A host that collects information from
SNMP agents through the SNMP protocol.
SNMP trap
An SNMP message sent from the SNMP
agent to the SNMP manager, where the
sending is initiated by the SNMP agent
and not as a response to a message sent
from the SNMP manager.
SNMP
See Simple Network Monitor Protocol.
snooze
The process of sending recurring event
notifications until the events are cleared.
storage pool
A reserved area of virtual disk space
serving the storage requirements of the
volumes.
Sync Job
A synchronization procedure run by the
master at specified user-defined intervals,
entailing synchronization between the
master and the slave.
synchronization
The process of making the primary
volume and secondary volume identical
after a communication down time or
upon the initialization of the mirroring.
T
target See remote target.
TCP/IP
See Transmission Control Protocol, Internet
Protocol.
thin provisioning
The ability to define logical volume sizes
that are much larger than the physical
capacity installed on the system.
Transmission Control Protocol
Transmission Control Protocol (TCP) on
top of the Internet Protocol (IP)
establishes a virtual connection between a
destination and a source over which
streams of data can be exchanged. See
also IP.
trap See SNMP trap.
U
unassociated volume
A volume that is not associated with a
consistency group. See Consistency group.
uninterruptible power supply
Provides battery backup power for a
determined period of time, particularly to
enable the system to power down in a
controlled manner, on the occurrence of a
lengthy power outage.
V
volume cloning
Creating a snapshot from a volume.
volume set
A cluster of specific volumes in a
consistency group, which can all be
snapshotted simultaneously, thus, creating
a synchronized snapshot of all of them.
The volume set can be snapshotted into
multiple snapshot sets of the specific
consistency group. See also Snapshot set,
Volume set.
volume
A logical address space, having its data
content stored on the systems disk drives.
A volume can be virtually any size as
long as the total allocated storage space of
all volumes does not exceed the net
capacity of the system. A volume can be
exported to an attached host through a
LUN. A volume can be exported to
multiple hosts simultaneously. See also
Storage pool, Unassociated volume.
W
WWPN
Worldwide port name
Glossary 643
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