Ask Your Question

difference between object storage and block storage in Openstack

asked 2012-12-05 05:32:01 -0500

pushkarajs10 gravatar image

What is the difference between object storage and block storage??

edit retag flag offensive close merge delete

1 answer

Sort by ยป oldest newest most voted

answered 2012-12-05 05:58:58 -0500

fifieldt gravatar image

Swift is the Openstack project for object storage. Object Storage in general (and swift specifically) provides large scale, cheap, and durable storage. Swift is not used like a traditional hard drive - Object storage is all about relaxing some of the constraints of a POSIX-style file system. The access to it is API-based (and the API uses http). This is a good idea as if you don't have to provide atomic operations (ie you can rely on eventual consistency), you can much more easily scale a storage system and avoid a central point of failure.

nova-volume and Cinder are for block storage attached to a virtual machine. Where Swift isn't a filesystm, nova-volume is - designed to provide "mountable" devices.

edit flag offensive delete link more

Get to know Ask OpenStack

Resources for moderators

Question Tools

1 follower


Asked: 2012-12-05 05:32:01 -0500

Seen: 215 times

Last updated: Dec 05 '12