Huawei OceanStor N8500 T Series Installation Manual page 365

OceanStor N8500 Clustered NAS Storage System
Installation Guide (for T Series V100R005)
External LUN
F
F_Port
Failback
Failed RAID
group
Failover
Failure tolerance
Fast Resync
FCL
Fileset
Fibre channel
arbitrated loop
Field replaceable
unit (FRU)
Firmware
Fragment
Free disk
Free hot-spare
disk
Issue 02 (2015-09-22)
The LUN that is located in other arrays, except the array of the LUN
copy.
A port of the fibre channel on the optical network. Each F_Port of the
fibre channel on the optical network connects to the N_Port of a certain
node. F_Port is a kind of data frame route port. This kind of port is
transparent for its upper-layer protocol.
The recovery process of transferring the load of the faulty component
to the backup components.
The number of failed member disks in a RAID group exceeds the
maximum number, which causes data loss.
The system component with peer functions replaces a faulty component.
For example, if a controller fails, the failover process is started, that is,
another normal controller takes over the I/O load of the faulty controller.
The storage system can provide storage resources normally (system
performance may be compromised) when its one or multiple
components fail.
Fast resync is used to perform quick and efficient resynchronization for
stale mirrors, and recovery the mirrors to be available.
(File Change Log), The log is used to record the changes of file and
directory in file system.
A collection of files within a file system.
A form of Fibre Channel network in which up to 126 nodes are
connected in a loop topology. Nodes connected to Fibre Channel
Arbitrated Loop arbitrates for the single transmission that can occur in
the loop at any instant.
A module or component that 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 sShelf housing, for all practical purposes), PEM/fan
module, optical module, and battery module. (Not all FRUs supports
hot swapping.)
The program that is embedded in programmable non-volatile memory.
The free physical space that has not been divided among different LUNs
on a disk.
A hard disk that is available in the OceanStor storage system.
A hot-spare disk that is available.
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