Huawei OceanStor S5600 Initial Configuration Manual page 133

OceanStor S5600 Storage System
Initial Configuration Guide
Field replaceable
unit (FRU)
Firmware
Fragment
Free disk
Free hot-spare
disk
Front-end host
port
Full hypercopy
G
Gateway
Gateway binding
Global hot-spare
disk
GSM modem
H
Hard disk tray
Heartbeat cable
High watermarks
High-low
watermarks
Issue 02 (2009-09-30)
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.
To synchronize the original LUN data to the target LUN.
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.
A wireless modem used to send the information about alarms.
The tray that bears the hard disk.
The heartbeat cable is a dedicated line on the backplane. It can check
the running state of the remote controller in real time. Once the running
controller is in the abnormal state, the remote controller can use the
heartbeat cable to check the related state and take proper measures.
The high level of the dirty page stored in cache. When the amount of
the dirty page in cache reaches the high level, cache begins to store the
dirty page into disks.
The low level and high level of the dirty page stored in cache. When the
amount of the dirty page in cache reaches the high level, cache begins
to store the dirty page into disks. When the amount of the dirty page
reaches the low level, cache stops storing the dirty page into disks.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
B Glossary
B-5