HP StorageWorks 6100 - Enterprise Virtual Array User Manual page 211

disk failure A method by which a controller pair reserves drive capacity to take over the
protection functionality of a failed or failing physical disk. For each disk group, the
controllers reserve space in the physical disk pool equivalent to the selected
number of physical disk drives.
disk group A physical disk drive set or pool in which a virtual disk is created. A disk group
may contain all the physical disk drives in a controller pair array or a subset of
the array.
disk migration A physical disk drive operating state. A physical disk drive can be in a stable
state
or migration state:
•
•
disk replacement The time that elapses between a drive failure and when the controller starts
delay searching for spare disk space. Drive replacement seldom starts immediately in
case the "failure" was a glitch or temporary condition.
drive blank See
drive enclosure See
dual-loop A configuration where each drive is connected to a pair of controllers through
two loops. These two Fibre Channel loops constitute a loop pair.
dual power supply
See
configuration
dynamic capacity
A storage system feature that provides the ability to increase the size of an
expansion existing virtual disk. Before using this feature, you must ensure that your operating
system supports capacity expansion of a virtual disk (or LUN).
EIA Electronic Industries Alliance. A standards organization specializing in the
electrical and functional characteristics of interface equipment.
EIP Event Information Packet. The event information packet is an HSV element
hexadecimal character display that defines how an event was detected. Also
called the EIP type.
electromagnetic See EMI.
interference
electrostatic See ESD.
discharge
element 1.
2.
HP Command
The graphical user interface (GUI) through which a user can control and monitor
View EVA GUI
a storage system. HP Command View EVA can be installed on more than one
HP StorageWorks 4x00/6x00/8x00 Enterprise Virtual Array user guide
Stable—The state in which the physical disk drive has no failure nor is a
failure predicted.
Migration—The state in which the disk drive is failing, or failure is predicted
to be imminent. Data is then moved off the disk onto other disk drives in the
same disk group.
disk drive blank.
drive enclosure.
redundant power configuration.
In a drive enclosure, a device such as an EMU, power supply, disk, blower,
or I/O module. The object can be controlled, interrogated, or described by
the enclosure services process.
In the Open SAN Manager, a controllable object, such as the Enterprise
storage system.
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