NDLI: CMFS: Compressed metadata file system for hybrid storage

Content Provider	IEEE Xplore Digital Library
Author	Taizhong Quan Dylan Yeo Youjip Won
Copyright Year	2010
Abstract	Storage CLASS Memory (SCM) is a next generation of solid-state, nonvolatile memory. It combines the benefits of a DRAM, such as high performance and robustness, with the low cost of conventional hard-disk. The biggest difference between SCM and NAND FLASH is that SCM can be accessed in byte-granularity and access speed is much faster. PRAM (Phase Change RAM), FRAM(Ferro-electric RAM), MRAM (Magnetic RAM), RRAM (Resistive RAM), and Solid Electrolyte Freitas et al are all SCM. The advent of SCM may possibly to make big improvement in storage landscape. In this work, we develop a file system — CMFS (compress metadata file system), which is used on SCM and NAND flash hierarchical storage environment. We make two contributions in this work. First, we store in-memory data in the SCM to overcome the drawback of the current log-structured file system that the mount time dramatically increases as the scale of NAND flash increases. Compared to YAFFS, we show that this file system requires only minimal time for mounting. Second, considering the physical characteristics of SCM, its scale is an order of magnitude smaller and the cost is much higher than the current storage device, we just store some part of the in-memory data to reduce the requirement size of the SCM. The capacity of SCM which is required by CMFS is much smaller than the current file system for hybrid storage. Compare with the MiNVFS [8], the capacity requirement by CMFS is reduced to 14%.
Starting Page	1030
Ending Page	1034
File Size	176850
Page Count	5
File Format	PDF
ISBN	9781424468515
e-ISBN	9781424468539
DOI	10.1109/ICNIDC.2010.5657953
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Non-Volatile RAM File system File systems Nonvolatile memory Flash memory Metadata Data structures Phase change random access memory Computer crashes
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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