Huawei OceanStor Dorado V3 Series - Page 221

LUN mapping A storage system maps LUNs to application servers so that
application servers can access storage resources.
LUN migration A method for the LUN data to migrate between different
physical storage spaces while ensuring data integrity and
uninterrupted operation of host services.
LUN snapshot A type of snapshot created for a LUN. This snapshot is both
readable and writable and is mainly used to provide a
snapshot LUN from point-in-time LUN data.
M
Maintenance terminal A computer connected through a serial port or management
network port. It maintains the storage system.
Management interface
module
The module that integrates one or more management
network ports.
Management network An entity that provides means to transmit and process
network management information.
Management network port The network port on the controller enclosure connected to
the maintenance terminal. It is provided for the remote
maintenance terminal. Its IP address can be modified with
the change of the customer's environment.
N
NVM Express A host controller interface with a register interface and
command set designed for PCI Express-based SSDs.
NVMe SSD A solid state disk (SSD) with a non-volatile memory express
(NVMe) interface. Compared with other SSDs, such SSDs
can deliver higher performance and shorter latency.
O
Out-of-band management A management mode used during out-of-band networking.
The management and control information of the network
and the bearer service information of the user network are
transmitted through different logical channels.
Owning controller The controller that can prior access a certain LUN.
P
PCIe switch A PCIe switch interconnects multiple devices using the
PCIe protocol to forward data among the devices.
Power failure protection When an external power failure occurs, the AC PEM
depends on the battery for power supply. This ensures the
integrity of the dirty data in the cache.
OceanStor Dorado V3 Series
Parts Replacement
8 Glossary
Issue 05 (2019-01-30) Copyright © Huawei Technologies Co., Ltd. 213