Huawei OceanStor Dorado V3 Series Parts Replacement page 219

OceanStor Dorado V3 Series
Parts Replacement
Flash Translation Layer
Front-end port
G
Garbage collection
Gateway
Global garbage collection
Global system for mobile
communications
Global wear leveling
H
Hard disk tray
Heartbeat
Issue 05 (2019-01-30)
Flash Translation Layer (FTL) organizes and manages host
data, enables host data to be allocated to NAND flash chips
of SSDs in an orderly manner, mains the mapping
relationship between logical block addresses (LBAs) and
physical block addresses (PBAs), and implements garbage
collection, wear leveling, and bad block management.
The port that connects the controller enclosure to the service
side and transfers service data. There are three types of
front-end ports: SAS, Fibre Channel, and iSCSI.
The process of reclaiming resources that are no longer in
use. Garbage collection has uses in many aspects of
computing and storage. For example, in flash storage,
background garbage collection can improve write
performance by reducing the need to perform whole block
erasures prior to a write.
A device that receives data via one protocol and transmits it
via another.
With a view to defragmentation of storage arrays and
garbage collection of disks, global garbage collection
reduces garbage of disks by enabling storage arrays to
inform disks of not implementing invalid data relocation and
of controlling space release so that disks and controllers
consume less space, reducing costs and prolonging the
useful life of storage arrays.
The second-generation mobile networking standard defined
by the European Telecommunications Standards Institute
(ETSI). It is aimed at designing a standard for global mobile
phone networks. GSM consists of three main parts: mobile
switching subsystem (MSS), base station subsystem (BSS),
and mobile station (MS).
With a view to individual characteristics of a single disk,
global wear leveling uses space allocation and write
algorithms to achieve wear leveling among disks, preventing
a disk from losing efficacy due to excessive writes and
prolonging the useful life of the disk.
The tray that bears the hard disk.
Heartbeat supports node communication, fault diagnosis,
and event triggering. Heartbeats are protocols that require no
acknowledgement. They are transmitted between two
devices. The device can judge the validity status of the peer
device.
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