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Glossary
Also called a shutdown upgrade.
online upgrade During an online upgrade of the storage system software, VCS is upgraded on
the HSV controllers, while they are still receiving I/O from the applications
on the host servers. During a VCS online upgrade, the HSV controllers do
reboot at the same time (usually within host OS timeout periods).
Online upgrades should be conducted at off peak hours. Database applications
with access to the storage system should not be running.
See also rolling upgrade.
OpenView Storage
Management Appliance
Software
A centralized, appliance-based monitoring and management interface that
supports multiple applications, operating systems, hardware platforms,
storage systems, tape libraries, and SAN-related interconnect devices. It is
included in, and resides on, the OpenView Storage Management Appliance, a
single aggregation point for data management.
password A security interlock where the purpose is to allow:
• A management agent to control only certain storage systems
• Only certain management agents to c
ontrol a storage system.
physical disk A disk drive mounted in a disk drive enclosure that communicates with a
controller pair through the device-side Fibre Channel loops. A physical disk
is hardware with embedded software, as opposed to a virtual disk, which is
constructed by the controllers. Only the controllers can communicate directly
with the physical disks. The physical disks, in aggregate, are called the array
and constitute the storage pool from which the controllers create virtual disks.
push button A switch that is engaged or disengaged when it is pressed.
rack A floor-standing structure primarily designed for, and capable of, holding and
supporting storage system equipment. All racks provide for the mounting of
panels per Electronic Industries Alliance (EIA) Standard RS–310–C.
rolling upgrade During a rolling upgrade of the storage system software, VCS is upgraded on
the HSV controllers, while they are still receiving I/O from the applications
on the host servers. The HSV controllers are upgraded one controller at
a time, using the native redundancy of the EVA to provide continuous
communication with the hosts.
See also online upgrade.
SAN Storage Area Network.
snapshot A temporary virtual disk (Vdisk) that reflects the contents of another virtual
disk at a particular point in time. A snapshot operation is only done on an
active virtual disk. Up to seven snapshots of an active virtual disk can exist at
any point. The active disk and its snapshot constitute a virtual family.
storage system software The storage system software consists of VCS and EMU firmware.
termination event An occurrences that causes the storage system to cease operation.
uninitialized system A state in which the storage system is not ready for use.
See also initialization.
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hp Stor ageWorks Enterprise Virtual Array Updating Product
Software Instructions