On Wednesday, April 13, 2011 10:32 PM, Sorin Srbu wrote:
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Christopher Chan Sent: Wednesday, April 13, 2011 3:45 PM To: centos@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.
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Christopher Chan Sent: Wednesday, April 13, 2011 4:49 PM To: centos@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.
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Christopher Chan -
Sorin Srbu