Re: [Lustre-discuss] OSS Service Thread Count

2009-01-26 Thread Brian J. Murrell
On Mon, 2009-01-26 at 00:01 -0500, Oleg Drokin wrote: > Hello! In addition to Oleg's suggestions... > Essentially what is happening is your drives are only able to sustain > certain > amount of parallel i/o activity before degrading the performance due > to all the > seeking going on. Ideally

Re: [Lustre-discuss] Plateau around 200MiB/s bond0

2009-01-26 Thread Brian J. Murrell
In general, when writing messages to this list, you need to be more concise about what you are asking. I see so much information here, I'm not sure what is relevant to your few interspersed questions and what is not. I will try to answer your specific question... Also, in the future, please use

[Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Nick Jennings
Hello (and a special hello to all my ex-co-workers from the CFS days :) The company where I work now has grown fast in the past year and we suddenly find ourselves in need of a lot of storage. For 5 years the company ran on a 60gig server, last year we got a 1TB RAID that is now almost full.

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Brian J. Murrell
On Mon, 2009-01-26 at 16:51 +0100, Nick Jennings wrote: > Hello (and a special hello to all my ex-co-workers from the CFS days :) And MVD days too. ;-) > The company where I work now has grown fast in the past year and we > suddenly find ourselves in need of a lot of storage. For 5 years the

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Nick Jennings
Hi Brian! Thanks for the reply, comments below Brian J. Murrell wrote: >> Instead of just adding another 1TB server, I need to plan for a more >> scalable solution. Immediately Lustre came to mind, but I'm wondering >> about the performance. Basically our company does niche web-hosting for >>

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Balagopal Pillai
MD3000 series doesn't seem to have raid 6 support, which could be very useful with lots of sata drives. Also MD3000i doesn't specify LACP support for the dual or quad Ethernet ports on the enclosure. But a pe1950 + perc 6 with MD1000 has raid 6 support and the OSS can benefit from good ethernet

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Nick Jennings
Thank you very much for this feedback Balagopal, it's extremely useful. I will look into the MD1000 and revise my plan. -Nick Balagopal Pillai wrote: > MD3000 series doesn't seem to have raid 6 support, which could be very > useful with lots of sata drives. > Also MD3000i doesn't specify LACP su

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Daniel Leaberry
Nick Jennings wrote: > Hello (and a special hello to all my ex-co-workers from the CFS days :) > > The company where I work now has grown fast in the past year and we > suddenly find ourselves in need of a lot of storage. For 5 years the > company ran on a 60gig server, last year we got a 1TB

Re: [Lustre-discuss] Performance Expectations of Lustre

2009-01-26 Thread Wojciech Turek
FYI Dell MD3000 storage supports RAID6 but you need to uprade RAID controllers with the latest firmware to Version:07.35.22.60, A06 You can download it from Dell support website. -- Initial Release of Firmware Generation 2 Featuring the Following Enhancements - Supports greater than 2TB LUN