Page Mapping

Page mapping is an advanced flash management technology and can be considered the ideal solution for industrial applications to increase random access speed and improve SSD lifespan, reduce block erase frequency, and achieve optimized performance.

With the architectural framework for the Internet of Things (IoT) getting gradually mature, portal websites, compact PCs, medical care and vehicular devices have become the focus of future development in the industrial automation market. The mass adoption and diverse applications of SSD in the industrial automation market mean that critical SSD technology must continuously evolve to solve system application problems. In particular, FTL (Flash Transfer Layer) mapping in SSD firmware is the most crucial as it determines SSD performance and lifespan. From block mapping in the early days to hybrid mapping, the technology of mapping has continuously improved performance and lifespan but it is still unable to overcome a few extreme usages in industrial applications. To achieve a complete overhaul and comply with industrial applications, new innovative page mapping will gradually dominate SSD applications.

Page mapping is an advanced flash management technology whose essence lies in the ability to gather data, distribute the data into flash pages automatically, and then schedule the data to be evenly written. Thus, page mapping is adopted to increase random access speed and improve SSD lifespan, reducing block erase frequency, and achieving optimized performance and lifespan.

Given that the data written to flash memory from industrial applications is often small and random, page mapping appears to be the ideal solution to increase overall performance and endurance, even though it requires a large mapping memory to maintain its mapping table. Equipped with the evolved page mapping firmware technology, Apacer SATAIII SSD, Industrial SD R1 and microSD R1 products are mainly designed for intensive, small and random data writes in end applications, including POS system, compact PCs, community websites, portal websites and medical diagnostic equipments.

FTL Structure Memory Requirement Random Write Performance Sequential Write Performance
Page Mapping Large High Low
Block Mapping Small Low High
Hybrid Mapping Medium Medium Medium

 

                    

Recommended Products
SV25C-25
Industrial SD R1
SV250-M242
SM210-M280
ST170-297
AFD257
SDM7-M 7P/180D DP
UH110-UFD1
SM21P-M280
SV170-M280
SDM5A 22P180D
SDM5A-M 7P/180D LP2(H)
SV170-CFast
PV170-mPCIe
Industrial SD H1-SL
SV25C-300
UV110-UFM1
SV250-300
ST170-CFast
SU210-297
ADM5S-M 40P/180D MPH
SV170-25
SV170-300
Industrial microSD R1
mSATA A1-M
SU210-300
SM210-300
SDM5A-M 7P/180D LP5(H)
SS210-297
SV25C-M280
SDM5A 7P/90D LP(H)
SV250-CFast
SM210-25
PV210-M280
SV250-300B
SH250-CFast
SDM5A-M 7P/180D Slim2(H)
CH110-SD
SM220-CFast
SH250-7LP2 90D
SM230-25
SV250-7LP2
SV240-25
Industrial microSD H1-SL
SM210-18
PV130-CFX
SM21P-25
ADM5S 44P/90D/270D
CS710-CF
SU210-25
SV240-300
UH110-UFM1
SH250-M280
ST170-M280
ST170-25
SS210-300
CH710-CF
SDM5A-M 22P/90D
SM22P-297
SM23P-297
SV170-M242
ADM5S 40P/180D
SS21P-25
SV250-25
SM230-297
SDM5A-M 7P/180D LP(H)
CM710-CF
SM220-M242
SM310-25
SDM5A 7P/90D MP2
ADM5S 44P/180D MPH
SDM5A 7P/180D LP(H)
PV140-25
SS130-25
PT120-M280
SV170-μSSD
SDM5A 7P/180D Slim2(H)
SV240-297
SM230-CFast
SDM5A-M 22P/180D
SV170-300B
ADM5S-M 44P/90D/270D
SDM5A-M 7P/90D MP2
μSDC Plus-M
mSATA A1
mSATA mini H1
PV310-M280
PV120-M280
SV170-7LP2
SDM5A 7P/180D LP2
SS210-25
SDM7-M 7P/180D LP2(H)
SDM7-SL 7P/180D DP
SM22P-CFast
ST170-M242
ST170-300B
SM230-M242
AFD257-M
UH110-UFD4
SV250-M280
SV240-M280
PV910-CFX
PV910-M230
SS220-M242
PM610-M280
SM130-25
UT110-UFD2
SH250-7LP2 180D
SM230-300
SDM5A-M 7P/180D Slim3(H)
SDM5A-M 7P/270D N1
ST170-300
SFD25A-M
ADM5S-M 44P/180D MPH
SM230-M280
SH250-300
SH250-25
PV220-M280
SS220-CFast
SDM5A 7P/270D N1
SU220-CFast
SDM5A 22P90D
SU220-M242
SFD25A
SS210-18
UV110-UFD1
PV130-M242
ST170-7LP2
UV210-UFD3
Industrial microSD H2-M
SH250-300B
CH110-MSD
UV110-UFM2
SV170-297
SU210-M280