Hi Yonny,<div><br></div><div><span style="font-family:Arial,sans-serif;font-size:10pt">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.</span> </div><div><div><br></div><div><h3 style="background-image:none;background-color:rgb(255,255,255);margin:0px 0px 0.3em;overflow:hidden;padding-top:0.5em;padding-bottom:0.17em;border-bottom-style:none;font-size:17px;font-family:sans-serif;line-height:19.200000762939453px">
<span class="mw-headline" id="Object_Storage_.28Swift.29">Object Storage (Swift)</span></h3><p style="margin:0.4em 0px 0.5em;line-height:19.200000762939453px;font-family:sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<a rel="nofollow" class="external text" href="http://www.openstack.org/software/openstack-storage/" style="text-decoration:initial;color:rgb(102,51,102);background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAVklEQVR4Xn3PgQkAMQhDUXfqTu7kTtkpd5RA8AInfArtQ2iRXFWT2QedAfttj2FsPIOE1eCOlEuoWWjgzYaB/IkeGOrxXhqB+uA9Bfcm0lAZuh+YIeAD+cAqSz4kCMUAAAAASUVORK5CYII=);padding-right:13px;background-repeat:no-repeat no-repeat">OpenStack Object Storage (Swift)</a> 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.</p>
<p style="margin:0.4em 0px 0.5em;line-height:19.200000762939453px;font-family:sans-serif;font-size:13px;background-color:rgb(255,255,255)">In Aug 2009, Rackspace started the development of Swift, which is a complete replacement for the <i>Cloud Files</i> product. The initial development team consists of nine developers. <sup id="cite_ref-14" class="reference" style="line-height:1em"><a href="https://en.wikipedia.org/wiki/OpenStack#cite_note-14" style="text-decoration:initial;color:rgb(11,0,128);background-image:none;white-space:nowrap;background-repeat:initial initial">[14]</a></sup></p>
<h3 style="background-image:none;background-color:rgb(255,255,255);margin:0px 0px 0.3em;overflow:hidden;padding-top:0.5em;padding-bottom:0.17em;border-bottom-style:none;font-size:17px;font-family:sans-serif;line-height:19.200000762939453px">
<span class="editsection" style="float:right;font-size:13px;font-weight:normal;margin-left:5px">[<a href="https://en.wikipedia.org/w/index.php?title=OpenStack&action=edit§ion=5" title="Edit section: Block Storage (Cinder)" style="text-decoration:initial;color:rgb(11,0,128);background-image:none;background-repeat:initial initial">edit</a>]</span><span class="mw-headline" id="Block_Storage_.28Cinder.29">Block Storage (Cinder)</span></h3>
<p style="margin:0.4em 0px 0.5em;line-height:19.200000762939453px;font-family:sans-serif;font-size:13px;background-color:rgb(255,255,255)"><a rel="nofollow" class="external text" href="http://www.openstack.org/software/openstack-storage/" style="text-decoration:initial;color:rgb(102,51,102);background-image:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAVklEQVR4Xn3PgQkAMQhDUXfqTu7kTtkpd5RA8AInfArtQ2iRXFWT2QedAfttj2FsPIOE1eCOlEuoWWjgzYaB/IkeGOrxXhqB+uA9Bfcm0lAZuh+YIeAD+cAqSz4kCMUAAAAASUVORK5CYII=);padding-right:13px;background-repeat:no-repeat no-repeat">OpenStack Block Storage (Cinder)</a> 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 <a href="https://en.wikipedia.org/wiki/Ceph" title="Ceph" style="text-decoration:initial;color:rgb(11,0,128);background-image:none;background-repeat:initial initial">Ceph</a>, <a href="https://en.wikipedia.org/wiki/NetApp" title="NetApp" style="text-decoration:initial;color:rgb(11,0,128);background-image:none;background-repeat:initial initial">NetApp</a>, <a href="https://en.wikipedia.org/wiki/Nexenta" title="Nexenta" class="mw-redirect" style="text-decoration:initial;color:rgb(11,0,128);background-image:none;background-repeat:initial initial">Nexenta</a> and <a href="https://en.wikipedia.org/w/index.php?title=SolidFire&action=edit&redlink=1" class="new" title="SolidFire (page does not exist)" style="text-decoration:initial;color:rgb(165,88,88);background-image:none;background-repeat:initial initial">SolidFire</a>. 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.<br>
<br></p><p style="margin:0.4em 0px 0.5em;line-height:19.200000762939453px;font-family:sans-serif;font-size:13px;background-color:rgb(255,255,255)">For more information you may refer to <a href="https://en.wikipedia.org/wiki/OpenStack">https://en.wikipedia.org/wiki/OpenStack</a></p>
<p style="margin:0.4em 0px 0.5em;background-color:rgb(255,255,255)"><font face="sans-serif"><span style="line-height:19.200000762939453px"><a href="http://docs.openstack.org/developer/swift/#">http://docs.openstack.org/developer/swift/#</a></span></font></p>
<br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Yonny Luis Leyva Suárez</b> <span dir="ltr"><<a href="mailto:yllsuarez@hotmail.com">yllsuarez@hotmail.com</a>></span><br>
Date: Fri, Jan 11, 2013 at 3:10 AM<br>Subject: [Openstack] [Cinder]<br>To: <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br><br><br>
<div><div dir="ltr">
Hello,<div><br></div><div>I have a big doubt.</div><div><br></div><div>Cinder and Swift, are 2 separated services, but openstack talk about Storage controller.</div><div><br></div><div>What Cinder and Switft does ?</div>
<div>Can i use two NAS iSCSI with separated LUN for those services or need servers for Swift?</div><div><br></div><div>Thanks a lot</div> </div></div>
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<br></div><br><br clear="all"><div><br></div>-- <br>With Regards<br>Sajid Akhtar<br>Twitter: @mail2fashion</div></div>