This document provides an overview of object-based storage. It defines object-based storage as storing file data in the form of objects based on content and attributes rather than location. The key components are objects, object storage devices (OSDs), and metadata servers. Objects have file-like methods and contain data, metadata, and attributes. The document compares block-based and file-based storage, discusses drivers for object storage like big unstructured data, and outlines the process for storing and retrieving objects from OSDs. Benefits highlighted include security, reliability, platform independence, scalability, and manageability.

1. Object Storage
Seminar Guide:
Mr: R.Anand
Mrs: G.Madhu
Prepared by:
Akash K T
USN:
1CR11IS008
Department:
ISE

2. Agenda
i. Abstract
ii. Existing technologies
iii. Comparison
iv. Drivers for Object-based storage
v. What is object based storage
1.Object
2.OSD(Object storage device)
3.MDS(Metadata Server)
vi. Key components of OSD
vii. Process of storing object in OSD
viii. Process of retrieving object from OSD
ix. Key benefits of Object based storage

3. Abstract
• Object Storage is the new storage
paradigm. There is a high level of interest
from organizations, as this new approach
resolves the challenges of efficiently
storing massive volumes of unstructured
data - Big Unstructured Data

4. Two Technologies:
• Files:
– Flexible data sharing
– Secure
• Blocks:
– High performance
– Scalable
Blocks
Files

5. Comparison
Block Based Disk Object Based Disk
Operations:
Read block
Write block
Addressing:
Block range
Operations:
Create object
Delete object
Read object
Write object
Addressing:
[object, byte range]
Objects can be regarded as the convergence
of two technologies: files and blocks

6. Drivers for Object-based Storage
More than 90% of the data being
generated is unstructured
Traditional solutions are inefficient to
handle the growth
Object-based storage provides a smarter
approach to manage unstructured data
based on content

7. what is object based storage?
a way to store file data in the form of objects on
a flat address space based on its content and
attributes rather than the name and location
components of object based storage
• Object
• OSD(Object-based storage Device)
• MDS(Metadata Server)

8. Object
• An object is a logical unit of storage
—ID (Identification)
—Application data
— Metadata which includes block allocation and
length
—Attributes that is accessible by users
• Objects have file-like methods
— open, close, read, write

9. • The root object -- The OSD itself
• User object -- Created by SCSI
commands from the application or
client
• Collection object -- A group of user
objects, such as all .mp3
• Partition object -- Containers that
share common security and space
management characteristics

10. CPU
Applications
System Call Interface
File System
User Component
File System
Storage Component
Block I/O Manager
Storage Device
CPU
Applications
System Call Interface
File System
User Component
Object Interface
Interface
Two changes :
Object-based storage
offloads the storage
component to the
storage device
The device interface
changes from blocks to
objects
(a)
Traditional
model
(b)
Object storage
model
Object Storage Devices
File System
Storage Component
Block I/O Manager
Storage Device

11. MDS(Metadata Server)

12. Key components of OSD
IP internal
network
Metadata
service
Storage
service
OSD node Storage
OSD nodes
Internal network
Storage
Application
server
OSD system

13. Process of storing object in OSD
Metadata
service
1.Application server sends file to OSD
6.Acknowledgement sent to
application server
5.OSD stores user data
using user service
Application
server
Storage
service
OSD
node
2.OSD node
divides file into
two parts
metadata and
user data
3. OSD node
generates
object ID from
user data
4. OSD
stores
metadata and
object ID
using
metadata
service
storage

14. Process of retrieving object from OSD
Metadata
service
Storage
service
Storage
1.Application server request file from OSD
2.metadata service
locates object ID for
the requested file
3.Metadata service sends object ID to application server
4.Application server sends object ID to OSD storage
service for object retrieval
6.Storage service sends the file to the application
server
5.OSD storage service
retrieves the object from
storage device
Application
server
Storage
service
OSD
node

15. Key Benefits of object-based storage
• Security and Reliability
• Platform independence
• Scalability
• Manageability

16. Thank you