TY - GEN
T1 - Exploiting virtual channel flash management issue for cost-efficient NAND usage in mobile devices
AU - Lim, Seung Ho
AU - Choi, Min
AU - Jeong, Young Sik
PY - 2013
Y1 - 2013
N2 - The recent evolution of NAND flash memory technologies has lead wealthy memory and storage space not only for system usage, but also user's preferences. Despite of the dramatic increase of flash capacity, the bandwidth of flash memory does not much evolved. Rather, the bandwidth of flash memory decreases due to the memory manufacture technologies. To overcome the bandwidth shrink for one flash memory interface, manufactures pack several flash memory die into one flash memory package, and the package interface is connected to host controller. However, this packaging could increase hardware and firmware overhead in terms of device complexity and cost. To mitigate cost issue of flash system development, we design and implement cost-efficient virtual channel based FTL. In the designed virtual channel FTL, the raw NAND chip is virtually divided into several regions, and each region is allocated to each virtual channel. Although the virtual channels cannot keep up with physical channels since all the channel cannot be utilized at the same time, it has better utilization of NAND flash chip with single channel FTL.
AB - The recent evolution of NAND flash memory technologies has lead wealthy memory and storage space not only for system usage, but also user's preferences. Despite of the dramatic increase of flash capacity, the bandwidth of flash memory does not much evolved. Rather, the bandwidth of flash memory decreases due to the memory manufacture technologies. To overcome the bandwidth shrink for one flash memory interface, manufactures pack several flash memory die into one flash memory package, and the package interface is connected to host controller. However, this packaging could increase hardware and firmware overhead in terms of device complexity and cost. To mitigate cost issue of flash system development, we design and implement cost-efficient virtual channel based FTL. In the designed virtual channel FTL, the raw NAND chip is virtually divided into several regions, and each region is allocated to each virtual channel. Although the virtual channels cannot keep up with physical channels since all the channel cannot be utilized at the same time, it has better utilization of NAND flash chip with single channel FTL.
KW - Cost-efficient
KW - FTL
KW - Mobile device
KW - NAND flash
KW - Virtual-channel
UR - http://www.scopus.com/inward/record.url?scp=84870797360&partnerID=8YFLogxK
U2 - 10.1007/978-94-007-5857-5_72
DO - 10.1007/978-94-007-5857-5_72
M3 - Conference contribution
AN - SCOPUS:84870797360
SN - 9789400758568
T3 - Lecture Notes in Electrical Engineering
SP - 669
EP - 677
BT - Ubiquitous Information Technologies and Applications, CUTE 2012
T2 - 7th International Conference on Ubiquitous Information Technologies and Applications, CUTE 2012
Y2 - 20 December 2012 through 22 December 2012
ER -