HP StorageWorks Command Console V2.5 User Guide (AA-RV1UA-TE, March 2005)

Glossary
129Command Console V2.5 User Guide
cold swap Device replacement requiring that you power off the controller
and cabinet shelves. This method is used if conditions preclude
using the warm swap or hot swap method.
Command Console
Client
Provides event notification and the Navigation window.
configuration file A file in which configuration information for a subsystem is
stored. The file can be used to automatically configure the
subsystem.
container HS-series controller term for a device group.
controller A firmware-driven hardware device used for communication
between a host and storage devices. A controller translates bus
protocols and hardware interfaces and adds functionality to the
subsystem. Some controllers provide additional functionality
by mapping storage devices to host-addressable, virtual disks
with specific performance and availability features that use
RAID techniques.
controller shelf A shelf designed to contain controller and cache memory
modules. A controller shelf can contain two controllers in a
dual-redundant configuration.
copy speed For HS-series controllers, the rate at which the controller writes
mirrored data in a mirrored virtual disk. There are two speeds:
■ Normal -- uses relatively few controller resources to
perform the copy and has little impact on controller
performance.
■ Fast -- uses more controller resources, which reduces the
time it takes to complete the copy, but also reduces overall
controller performance.
device In its physical form, a magnetic or optical disk, tape, or
CD-ROM that can be attached to a SCSI bus. A device provides
large amounts of addressable storage to a host.
This term also means a physical device that is part of a
controller's configuration. That is, it is known to the controller.
After a device is made known to the controller, you can create
virtual disks from it.
device driver A program that processes I/O requests for a particular type of
device.