Open Stack

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&section=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 <yllsuarez at hotmail.com>
Date: Fri, Jan 11, 2013 at 3:10 AM
Subject: [Openstack] [Cinder]
To: openstack at 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

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-- 
With Regards
Sajid Akhtar
Twitter: @mail2fashion
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