Huawei OceanStor N8500 T Series Installation Manual page 367

OceanStor N8500 Clustered NAS Storage System
Installation Guide (for T Series V100R005)
Hot swap
Hot spare disk
Hot spare disk
reconstruction
I
I/O
Inband
management
Inconsistent
stripe
Initialize
initiator
Intelligent
prefetch
Internal LUN
Intent log
iSCSI host port
L
Link
Issue 02 (2015-09-22)
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 contains 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 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 port.
The protection of the check data block in a redundancy group stripe for
the protected space in the stripe is invalid.
The process of writing 0 bits in the data area on the logical drive and
generating related parity bits so that the logical drive can be in the ready
state.
A system component that can initiate an I/O operation on an I/O bus or
on a network.
A cache prefetch strategy. The system software calculates a proper size
of prefetched data. This strategy applies to a read application involving
a single bit stream or in situations where you do not know whether the
data is read in a certain order. An example is reading or writing a file.
The LUN that is located in the array of the LUN copy.
The log is used to record the changes of file system. File system is
quickly recovered by replaying and rolling back the change operations
when system failed.
A port that is on the controller enclosure connects to the application
server. The port transmits service data (used in the network and bearing
the SCSI protocol in the IP packet).
A physical connection between two nodes of a network.
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