1. Object-Based Storage Advanced Operating System 2011. 05. 25 HoSeok Seo
Mike Mesnier, Carnegie Mellon and Intel
Gregory R. Ganger, Carnegie Mellon
Erik Riedel, Seagate Research
In IEEE Communications Magazine, Aug. 2003
Advanced Operating System
HoSeok Seo

2. Introduction Need new interface for intelligent devices
Since the first disk drive,
disks have grown by over 6x in density and 4x in performance.
But the storage interface is largely unchanged,
It’s now becoming a limiting factor for the storage architecture.
Need new interface for intelligent devices

3. Introduction In the past Now a block-based storage interface
a file-based storage interface (ex. NAS ( Network-attached storage ))
Now
propose a object-based storage interface
Ex) DAS ( direct-attached storage )
SAN ( Storage area network )
Ex) NAS ( network-attached storage )
A SAN FileSystem

4. Background What is Object? Files Blocks A logical collection of bytes
Composed of Data, Attribute, metadata
The convergence of two technologies : files and blocks
Files
Good for Secure and Data sharing among different platforms.
Ex) NAS
Blocks
Good for Performance.
Ex) DAS, SAN

5. Background
NAS ( Network-attached Storage )

6. Background
SAN ( Storage Area Network )

7. Background Summary of Architectures
Ref.

8. A SAN File System

9. A SAN File System

10. How to get improved Data Sharing
Interface
Similar to a file system
Easily extend object-specific methods
Attributes
File System shares a common set of information describing the data
The key to giving storage devices an awareness of how objects are being accessed
Independent File System

11. How to get Security What is a capability?
Authority for accessing the storage devices.
Created by server.
In encrypt.
Clients get capability for accessing the storage devices.

12. How to get Intelligent Use object attributes for
Understand the relationships between the blocks.
Better organize the data and anticipate needs.
Hint about the object’s behavior

13. Q & A