[openstack-dev] Information Dispersal Algorithm implementation in OpenStack

Aniket K aniket.k at tcs.com
Mon Nov 10 13:23:04 UTC 2014

Dear Team,

In OpenStack Swift, built-in replication technique is used to provide 3x+ 
data redundancy that is enabling OpenStack to provide high availability. 
We are studying use of Information Dispersal Algorithm(IDA) as a technique 
instead of replication to provide high availability along with security.

We would like to know,
1.      Was it considered in Swift before? If so, can you please share 
your opinion?
2.      Will this fit into existing Swift architecture that supports 
eventual consistency? 
3.      Do you see advantages like storage efficiency, security etc. of 
using this technique over replication?

Any pointer/suggestions/guidance in this regard will be appreciated.

More information about IDA can be found at:

Thanks in advance.

Aniket Kulkarni
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