Compaq StorageWorks Data Replication Manager HSG80 ACS Version 8.5P Operations Guide

G–14 Compaq StorageWorks Data Replication Manager HSG80 ACS V8.5P Operations Guide
SCSI An acronym for Small Computer System Interface:
1. An American National Standards Institute (ANSI interface standard
defining the physical and electrical parameters of a parallel I/O bus used
to connect initiators to devices.
2. A processor-independent standard protocol for system-level interfacing
between a computer and intelligent devices including hard drives, floppy
disks, CD-ROMs, printers, scanners, and others.
SCSI device A host computer adapter, a peripheral controller, or an intelligent peripheral
that can be attached to the SCSI bus.
Any physical unit that can communicate on a SCSI bus.
SCSI device ID number A bit-significant representation of the SCSI address referring to one of the
signal lines, numbered 0 through 7 for an 8-bit bus, or 0 through 15 for a
16-bit bus.
SCSI ID number The representation of the SCSI address that refers to one of the signal lines
numbered 0 through 15.
storage array An integrated set of storage devices.
storage unit The general term that refers to storagesets, single-disk units, and all other
storage devices that are installed in your subsystem and accessed by the host.
A storage unit can be any entity that is capable of storing data, whether it is a
physical device or a group of physical devices.
storageset A group of devices configured with RAID techniques to operate as a single
container.
Any collection of containers, such as stripesets, mirrorsets, striped
mirrorsets, JBODs, and RAIDsets.
subnet mask Also know as address mask. A subnet is an IP network that can be reached
through a single IP address. All the members of the subnet share the mask
value. Members of the subnet can then be referenced more easily. A
subnetwork is a network that is part of another network, connected through a
gateway, bridge, or router.
surviving controller The controller in a dual-redundant configuration pair that serves its
companion’s devices when the companion controller fails.