On Fri, Jan 11, 2013 at 3:47 AM, Sajid Akhtar <mail2akh...@gmail.com> wrote:
> Hi Yonny, > > OpenStack modules such as Cinder are dependent on the Vendor driver on > Openstack to achieve LUN provisioning and maintenance operations on the > respective storage controller. > > Object Storage (Swift) > > OpenStack Object Storage > (Swift)<http://www.openstack.org/software/openstack-storage/> is > a massively scalable redundant storage system. Objects and files are > written to multiple disk drives spread throughout servers in the data > center, with the OpenStack software responsible for ensuring data > replication and integrity across the cluster. Storage clusters scale > horizontally simply by adding new servers. Should a server or hard drive > fail, OpenStack replicates its content from other active nodes to new > locations in the cluster. Because OpenStack uses software logic to ensure > data replication and distribution across different devices, inexpensive > commodity hard drives and servers can be used. > > In Aug 2009, Rackspace started the development of Swift, which is a > complete replacement for the *Cloud Files* product. The initial > development team consists of nine developers. > [14]<https://en.wikipedia.org/wiki/OpenStack#cite_note-14> > > [edit<https://en.wikipedia.org/w/index.php?title=OpenStack&action=edit§ion=5> > ]Block Storage (Cinder) > > OpenStack Block Storage > (Cinder)<http://www.openstack.org/software/openstack-storage/> provides > persistent block level storage devices for use with OpenStack compute > instances. The block storage system manages the creation, attaching and > detaching of the block devices to servers. Block storage volumes are fully > integrated into OpenStack Compute and the Dashboard allowing for cloud > users to manage their own storage needs. In addition to using simple Linux > server storage, it has unified storage support for numerous storage > platforms including Ceph <https://en.wikipedia.org/wiki/Ceph>, > NetApp<https://en.wikipedia.org/wiki/NetApp> > , Nexenta <https://en.wikipedia.org/wiki/Nexenta> and > SolidFire<https://en.wikipedia.org/w/index.php?title=SolidFire&action=edit&redlink=1>. > Block storage is appropriate for performance sensitive scenarios such as > database storage, expandable file systems, or providing a server with > access to raw block level storage. Snapshot management provides powerful > functionality for backing up data stored on block storage volumes. > Snapshots can be restored or used to create a new block storage volume. > > For more information you may refer to > https://en.wikipedia.org/wiki/OpenStack > > http://docs.openstack.org/developer/swift/# > > ---------- Forwarded message ---------- > From: Yonny Luis Leyva Suárez <yllsua...@hotmail.com> > Date: Fri, Jan 11, 2013 at 3:10 AM > Subject: [Openstack] [Cinder] > To: openstack@lists.launchpad.net > > > Hello, > > I have a big doubt. > > Cinder and Swift, are 2 separated services, but openstack talk about > Storage controller. > > What Cinder and Switft does ? > Can i use two NAS iSCSI with separated LUN for those services or need > servers for Swift? > > Thanks a lot > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > > > > -- > With Regards > Sajid Akhtar > Twitter: @mail2fashion > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > Just to add a little to Sajid's response, there is of course a default LVM implementation for Cinder/Block Storage in addition to the supported back ends that were mentioned. John
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