<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Lustre relies on the the underlying storage and network architectures and follows the same type of requirements as any mission critical service. There are many mission critical uses of Lustre, a simple one is in weather forecasting.</div><div><br></div><div>Lustre itself is designed to have no single points of failure, assuming the storage and network also provide the same. See <a href="http://wiki.lustre.org/index.php?title=Recovery_Overview">http://wiki.lustre.org/index.php?title=Recovery_Overview</a> for how Lustre handles different types of failures to protect your data.</div><div><br></div><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Casual; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div><div><div><div>Regards,</div><div apple-content-edited="true"><div><div><div><div>Mike Berg</div><div>Sr. Lustre Solutions Engineer</div><div>Sun Microsystems, Inc.</div><div>Office/Fax: (303) 547-3491</div><div>E-mail: <a href="mailto:Mike.Berg@Sun.Com">Mike.Berg@Sun.Com</a></div></div></div></div></div></div></div></div></div></div></div></span> </div><br><div><div>On May 14, 2008, at 12:21 PM, jrs wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Greetings all,<br><br>I just spoke with someone at a large computing company who<br>has a close relationship with lustre/sun (a reseller, I guess).<br>This person described lustre as being something that Sun<br>"would not recommend for mission critical use."<br><br>Can this be true?<br><br>I work for a small/medium company that does image processing.<br>We have about 700TB of data presently and might be at 2PB within<br>the next couple of years. Owing to the amount of data we don't<br>make backups for most of it and trust raid 6 on our hardware raid<br>boxes (nexsan Satabeast) to fail more slowly than we can replace<br>disks. Over the last couple of years we've had great luck and,<br>I believe, have never lost data owing to a failure with this<br>hardware (software or human error is another matter ;-).<br>However, the unbacked up data is "mission critical." Though<br>it can, probably, all be reconstructed or reacquired, as a practical<br>matter losing a significant quantity of this data could be<br>catastrophic for our business.<br><br>So, what do you think, can lustre be trusted to keep our<br>data safe at our company? Assume in answering that we have<br>failover working properly. We can also withstand some blocking<br>of the filesystem while a failover event completes, i.e., not<br>having the filesystem available for some amount of time is<br>not a problem, but having directory important-data/ disappear<br>is a HUGE problem.<br><br>Thanks for any help or guidance,<br><br>John<br>_______________________________________________<br>Lustre-discuss mailing list<br><a href="mailto:Lustre-discuss@lists.lustre.org">Lustre-discuss@lists.lustre.org</a><br><a href="http://lists.lustre.org/mailman/listinfo/lustre-discuss">http://lists.lustre.org/mailman/listinfo/lustre-discuss</a><br></blockquote></div><br></body></html>