Q r s – HP Hitachi Dynamic Link Manager Software Licenses User Manual

Page 705

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Q

QEMU

A virtual emulator available for the entire host system.

(See also: KVM)

R

reservation

The reservation function enables a host to declare that it has exclusive rights to use a

particular LU, and prevents other hosts from accessing that LU. Access permission for

an LU that has been reserved is given only to the host that issued the reservation, so

the LU cannot be accessed from multiple paths (coming from multiple hosts)

simultaneously. However, because of this, load balancing is not possible.

(See also: persistent reservation)

S

SAN (Storage Area Network)

A high-speed network connecting hosts to storage systems. This network is independent

of a LAN and is dedicated to data transfers. A SAN provides faster access to storage

systems, and prevents the transfer of high-volumes of data from deteriorating LAN

performance.

SCSI device

A SCSI disk device.

SLPR (Storage Logical Partition)

A function supported by Hitachi USP series, Universal Storage Platform V/VM series,

Virtual Storage Platform series, and VSP G1000 series for logically splitting up a storage

system. This function splits up the resources, such as ports, CLPR, and volumes, in the

storage system, so that the user can manage each resource independently.

X

Xen

Software that provides a virtual environment in Linux.

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A B C D E

F

G

H

I

J

K

L

M

N O P Q R S

T

U V W

X

Y

Z

Glossary-7

Hitachi Dynamic Link Manager (for Linux®) User Guide

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