Huawei OceanStor S2600 Command Reference Manual page 264

B Glossary
E
Expand the
member disk of
RAID group
dynamically
Expander module
Expansion master
LUN
F
Failed RAID
group
Failure tolerance
Field replaceable
unit (FRU)
Firmware
Fragment
Free disk
Free hot-spare
disk
Front-end host
port
G
Gateway
Gateway binding
Global hot-spare
disk
B-4
To add member disk in a RAID group without interrupting the normal
services of RAID group.
A component used for expanding.
The first LUN composing the connected LUNs is called expansion
master LUN.
The number of failed member disk in a RAID group exceeds the
maximum number, which causes data loss.
The storage system can provide storage resources normally (system
performance may be compromised) when its one or multiple
components fail.
A module or component which will typically be replaced in its entirety
as part of a field service repair operation. Any entity that can be replaced
by a user in the field. Examples of this type of FRU might include:
backplane (the Shelf housing, for all practical purposes), PEM/fan
module, optical module, and battery module. (Not all FRU supports hot
swapping.)
The program that is embedded in a programmable non volatile memory.
The free physical space that has not been divided among different LUNs
on a disk.
A hard disk which is available in the OceanStor storage system.
A hot-spare disk that is available.
The port on the controller subrack to connect to the application server
and transmit service data. There are three types of the front-end host
port: SAS, FC and iSCSI.
The entrance node on another network.
A mode of binding an application server and the network entrance node
it is located in.
A type of hot spare disk. A global spare disk can serve as the spare disk
for multiple RAID groups of an array while a local hot spare disk can
only serve as the spare disk for only one RAID group.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
OceanStor S2600 Storage System
Command Reference
Issue 07 (2010-05-20)