HP StorageWorks 4000/6000/8000 Enterprise Virtual Array Updating Product Software Guide XCS 5.031 (5697-5541, December 2005)

loss of access to customer data. If this happens, LID recovery is executed by
the EVA to attempt to isolate and bypass the drive.
logon Also called login, a procedure whereby a user or network connection is
identified as being a n authorized network user or participant.
management
agent
The HP Command View EVA software that controls and monitors the Enterprise
StorageSystem. Thesoftwarecanexistonmorethanonemanagement
appliance in a fabric. Each installation is a management agent.
management
agent event
Asignificant occurrence to or within the management agent software, or an
initialized storage cell controlled or monitored by the management agent.
metadata Information that a controller pair writes on the disk array. This information is
used to control and monitor the a rray and is not readable by the host.
OCP Operator Control Panel. The element that displays the controller's status using
status indicators and an LCD. Information selection and data entry is controlled
by the OCP pushbuttons.
offline upgrade During an offline upgrade of the storage system software, all host I/O to the
storage system is stopped while XCS is upgraded on the HSV controllers. D uring
offline upgrades the HSV controllers are rebooted.
Offline upgrades are required when the HSV controllers or Storage Management
Appliance must b e rebooted after loading XCS or other soft ware.
Also called a shutdown upgrade.
online upgrade During an online upgrade of the storage system software, XCS is upgraded on
the HSV controllers, while they are still receiving I/O from the applications on
the host servers. During a XCS online upgrade, the HSV controllers do reboot at
thesametime(usuallywithinhostOStimeoutperiods).
Online upgrades should be conducted at off peak hours. Database applications
with access to the storage system should not b e running.
OpenView Stor-
age Manag ement
Appliance Soft-
ware
A centralized, appliance-based monitoring and management interface that
supports multiple applications, operating systems, ha rdwa re 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 a llow:
• A managem ent agent to control only cer ta
in storage systems
• Only certain management agents to control 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 hardwa re 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 c onstitute the storage pool from which the controllers cre ate virtual d is ks.
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.
SAN Storage Area Network.
snapshot A temporary virtu al disk (Vdisk) th at reflects the contents of another virtual disk
at a particular p oint in time. A snapshot operation is only done on an active
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