1. Storage Issues
09/19

2. Intelligence Storage

3. Last Meeting… Mentioned about tags on files.
Database-based file systems
Instead of, or in addition to, hierarchical structured management, files are identified by their characteristics, like type of file, topic, author, or similar rich metadata.
Simple solution: soft link

4. tag2find
tag2find helps users to find everything on their desktop by simply using tags.
a tag is simply a label or keyword that describes the file for making it easer to find.

5. DBFS Provided as a layer above a hierarchy based file system.
holds references to files on the underlying hierarchy based file system.
Part of Onne Gorter's Master Thesis at the University of Twente
Last modified: 2004

6. TagFS https://github.com/marook/tagfs/wiki
Written in Python.
Directories are tagged through a simple text file '.tag’.
TagFS - "Tag Semantics for Hierarchical File Systems" paper by Stephan Bloehdorn and Max Völkel, 2006

7. Tagsistant A semantic file system. http://www.tagsistant.net/
a new way to organize files on disk, using tags in place of directories.
Queries looks like:
ntu/AND/csie/AND/iis
food/OR/drink
Relationship between tags
“include”
“is equivalent”

8. Others dhtfs Windows Vista/7 TaggedFrog Labelfs Written in Python
Last release 2007.
Windows Vista/7
Can only tag photos.
TaggedFrog
Labelfs
“labels can also be labeled with other labels”

9. Short Summary To cope with current hierarchy based file system.
Most tag file systems are layers between user and underlying file system.
Tags are stored independently with file.
Current tag file system works on single machine.
what if we apply tags to cloud?