Huawei OceanStor N8500 T Series Installation Manual page 366

OceanStor N8500 Clustered NAS Storage System
Installation Guide (for T Series V100R005)
Front-end host
port
Full LUN copy
G
Gateway
Gateway binding
Global hot-spare
disk
Group Quota
GSM Modem
H
Hard disk tray
Hard quota
Heartbeat cable
heartbeat channel The channel is used by controllers to communicate each other.
High watermarks
High-low
watermarks
Homedir share
Host port module
Hot backup/
Online backup
Issue 02 (2015-09-22)
The port on the controller enclosure to connect to the application server
and transmit service data. There are three types of 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.
The maximum storage space which is allocated to a users group, and
the quota is adjustable if necessary
A wireless modem used to send the information about alarms.
The tray that bears the hard disk.
A user can't require more storage space when the used storage space
arrives to the hard quota.
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 an 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.
An authorized user can only access itself shared space.
A module that bears the various types of host ports, for example, SAS
host port, FC host port, and iSCSI host port.
A form of backup in which the data being backed up may be accessed
by applications during the backup.
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