<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi there, <div><br></div><div>The two SSD disks are available as ephemeral volumes, BUT unlike other instance types they are NOT mounted by default. </div><div><br></div><div>This means that you have to format and mount by yourself. </div><div><br></div><div>You may be interested to this thread </div><div><br></div><div><a href="https://forums.aws.amazon.com/message.jspa?messageID=390415#390415">https://forums.aws.amazon.com/message.jspa?messageID=390415#390415</a></div><div><br></div><div><br></div><div><br></div><div>Best,</div><div>Paolo</div><div><br></div><div><br></div><div> </div><div><br><div><div>On Jan 4, 2013, at 5:44 PM, Dustin Machi <<a href="mailto:dmachi@vbi.vt.edu">dmachi@vbi.vt.edu</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I've never messed with them on AWS, but I assume that these get mounted <br>wherever the local disks get mounted normally.../mnt. The hi1.4xlarge <br>should have two 1tb volumes mounted <br>(<a href="http://aws.typepad.com/aws/2012/07/new-high-io-ec2-instance-type-hi14xlarge.html">http://aws.typepad.com/aws/2012/07/new-high-io-ec2-instance-type-hi14xlarge.html</a>) <br>or available to mount (fdisk -l). The don't think the IOPS provisioning <br>will matter much here (for the the read/writes to those volumes anyway), <br>though they may impact the performance of the EBS volume itself of <br>course.<br><br>Dustin<br><br>On 4 Jan 2013, at 11:06, Oppe, Thomas C ERDC-RDE-ITL-MS Contractor <br>wrote:<br><br><blockquote type="cite">Dear Sir:<br><br><br><br>I was wondering if anyone has tried using a high-performance I/O <br>instance (e.g., "hi1.4xlarge") as the master node in a StarCluster <br>cluster, with the other nodes being Sandy Bridge "cc2.8xlarge" <br>instances. When I bring up a single "hi1.4xlarge" instance outside of <br>StarCluster, there is an option to attach one or two 1-TB SSD disks, <br>but when I bring up a cluster with "hi1.4xlarge" as the master node, <br>the SSD disks are nowhere to be found. Is a plug-in necessary to ask <br>for the SSD disks to be available? I have a code that needs the <br>fastest I/O available for writes with a combined size of 100GB during <br>the run. I have tried single Standard and Provisioned IOPS EBS <br>volumes, but the I/O performance to these volumes is poor, even with <br>"pre-warming". Has anyone written a plug-in for using striped volumes <br>in StarCluster? I would appreciate any comments or pointers to <br>information.<br><br><br><br>Tom Oppe<br>_______________________________________________<br>StarCluster mailing list<br><a href="mailto:StarCluster@mit.edu">StarCluster@mit.edu</a><br>http://mailman.mit.edu/mailman/listinfo/starcluster<br></blockquote><br>_______________________________________________<br>StarCluster mailing list<br><a href="mailto:StarCluster@mit.edu">StarCluster@mit.edu</a><br>http://mailman.mit.edu/mailman/listinfo/starcluster<br></blockquote></div><br></div></body></html>