>-----Original Message----- >From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf >Of Christopher Chan >Sent: Wednesday, April 13, 2011 4:49 PM >To: centos at centos.org >Subject: Re: [CentOS] 40TB File System Recommendations > >>> While we are at it, disks being directly connected to the raid card will >>> mean there won't be bus contention from nics and what not whereas >>> software raid 5/6 would have to deal with that. >> >> Could that really be an issue as well? What kind of traffic levels are we >> speaking of now? Approximately? That is to say, in as much this can be >> quantified at all. >> >> I've never really seen this problem. > >Oh yeah, we are on PCIe and NUMA architectures now. I guess this point >no longer applies just like hardware raid being crap no longer applies >because they are not underpowered i960/tiny cache boards anymore. I'm sorry, I can't quite "read you". Is your reply meant to be sarcastic? If I misunderstood it, I apologize. Anyway, what I meant before was that I haven't really the problem with smaller systems, like for eg department backups. Maybe up to 10TB-file systems, with not too many user's homefolders, in the hundreds maybe, but still a lot of data being transferred each day. -- /Sorin