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difference between object storage and block storage in Openstack

asked 2012-12-05 05:32:01 -0600

pushkarajs10 gravatar image

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

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answered 2012-12-05 05:58:58 -0600

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.

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Asked: 2012-12-05 05:32:01 -0600

Seen: 180 times

Last updated: Dec 05 '12