<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>Hello,</div><div><br></div><div>I am building a 2.3.x filesystem right now, and I am looking at setting up some active-active failover abilities to my oss's. I have been looking at Dell's md3xxx arrays, as they have redundant controllers, and allow up to four hosts to connect to each controller.</div><div><br></div><div>I can see how linux multi-path can be used with redundant disk controllers. I can even (slightly) understand how lustre fails over when an oss goes down. </div><div><br></div><ol><li>Is lustre smart enough to use redundant paths, or failover oss's if an oss is congested? (it would be cool, no?)</li><li>Does the linux multi-path module slow performance?</li><li>How much does a raid array such as the one listed above act as a bottleneck, say if I have as many volumes available on the raid controllers as there are oss hosts? </li><li>Are there arrays similar to Dell's model that would work?</li></ol><div>Thanks!</div><div><br></div><div>--jason</div></body></html>