Block Storage is a block-level storage solution that allows you to expand the storage capacity of your instances in the EGI Federated Cloud. This means you can increase your storage without increasing the size or capacity of your instance or by provisioning new ones.
Once you mount and format your drive, you can use it just like a regular hard drive attached to your server. Or you can detach your block storage volume from one server and attach it to another. Or you can delete your server, keeping your data intact and ready for the next time you need it.