HP P6350 Bedienungsanleitung PDF herunterladen (Seite 308)

redundant power

configuration

A capability of the Enterprise storage system racks and enclosures to allow continuous system

operation by preventing single points of power failure.

• For a rack, two AC power sources and two power conditioning units distribute primary and

redundant AC power to enclosure power supplies.

• For a controller or drive enclosure, two power supplies ensure that the DC power is available

even when there is a failure of one supply, one AC source, or one power conditioning unit.

Implementing the redundant power configuration provides protection against the loss or

corruption of data.

reporting group An Enterprise Storage System controller pair and the associated disk drive enclosures. The

Enterprise Storage System controller assigns a unique decimal reporting group number to each

EMU on its loops. Each EMU collects disk drive environmental information from its own

sub-enclosure and broadcasts the data over the enclosure address bus to all members of the

reporting group. Information from enclosures in other reporting groups is ignored.

RoHS Reduction of Hazardous Substances.

room temperature See ambient temperature.

RPO Recovery point objective. The maximum age of the data you want the ability to restore in the

event of a disaster. For example, if your RPO is six hours, you want to be able to restore systems

back to the state they were in as of no longer than six hours ago. To achieve this objective, you

need to make backups or other data copies at least every six hours.

SCSI Small Computer System Interface. An American National Standards Institute (ANSI) interface

which defines the physical and electrical parameters of a parallel I/O bus used to connect

computers and a maximum of 16 bus elements.

2. The communication protocol used a controller pair and the hosts. Specifically, the protocol

is Fibre Channel drive enclosure or SCSI on Fibre Channel. SCSI is the higher command-level

protocol and Fibre Channel is the low-level transmission protocol. The controllers have full

support for SCSI-2; additionally, they support some elements of SCSI-3.

SCSI-3 The ANSI standard that defines the operation and function of Fibre Channel systems.

SCSI-3 Enclosure

Services

See SES.

selective

presentation

The process whereby a controller presents a virtual disk only to the host computer which is

authorized access.

serial transmission A method of transmission where each bit of information is sent sequentially on a single channel,

not simultaneously on all channels as occurs in parallel transmission.

SES SCSI-3 Enclosures Services. Those services that establish the mechanical environment, electrical

environment, and external indicators and controls for the proper operation and maintenance of

devices within an enclosure.

SFP Small form-factor pluggable transceiver.

solid state disk

(SSD)

A high-performance storage device that contains no moving parts. SSD components include either

DRAM or EEPROM memory boards, a memory bus board, a CPU, and a battery card.

SSN Storage System Name. An HP P6000 Command View-assigned, unique 20-character name that

identifies a specific storage system.

storage carrier See carrier.

storage pool The aggregated blocks of available storage in the total physical disk array.

storage system See array.

Storage System

Name

See SSN.

switch An electronic component that switches network traffic from one connection to another.

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