Huawei OceanStor S2600 Command Reference Manual page 265

OceanStor S2600 Storage System
Command Reference
GSM modem
H
Hard disk tray
Heartbeat cable
High watermarks
High-low
watermarks
Host
Host port module
Hot backup/
Online backup
Hot swap
Hot-spare disk
Hot-spare disk
reconstruction
I
I/O
Inband
management
Issue 07 (2010-05-20)
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.
The "host" displayed in the ISM interface is a created virtual host. After
a port is added to the host, the host can correspond to a physical
application server.
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.
In a running system, inserting or removing a blade does not affect
normal running of the system.
The disk that is used to replace the damaged member disk in a RAID
group. A spare disk carries the data that is saved on faulty disks.
A function of the OceanStor storage system. It refers to the process of
restoring the data from the faulty member disk in a RAID group to the
spare disk.
Data movement process between memory and peripheral devices in the
computer system. I/O is a collective name, indicating the operations
reading data into the memory and writing data to other places from
computer memory.
A method of transmission between the management control information
on the network and the bearer service information on the user network
through the same logical channel. Inband management enables users to
manage disk arrays through commands. Management commands are
sent through the service channel, that is, the I/O read-and-write channel.
The advantage is quick and stable transmission, which requires no other
management network interface.
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B Glossary
B-5