Re: software raid and multiple cores

2011-11-28 Thread Mark van Harmelen
...@canonical.com wrote: On 11/26/2011 04:35 AM, Mark van Harmelen wrote: Hi Thanks to those who contributed to a discussion on software raid recently, it changed my mind about the universal desirability of hardware raid cards. So now I'm intent on building a sw raid based machine

software raid and multiple cores

2011-11-26 Thread Mark van Harmelen
Hi Thanks to those who contributed to a discussion on software raid recently, it changed my mind about the universal desirability of hardware raid cards. So now I'm intent on building a sw raid based machine, but mostly am interested in performance under disc load. Basic question: given a

Re: Good book recommendations ?

2011-03-10 Thread Mark van Harmelen
Loads of recommendations - thanks everyone! regards mark On Thu, Mar 10, 2011 at 11:45 AM, jurgen.depic...@let.be wrote: configuration management, and automated backup and recovery. Nagios is also lurking in the backs of our minds. I can surely recommend Packt Publishing's 'Learning

Good book recommendations ?

2011-03-09 Thread Mark van Harmelen
Hi everyone We are getting more serious about our random collection of servers, all running ubuntu server 10.04+, and want to buy some books that we can use to build our knowledge and skills. Particularly we are interested in topics like automated deployment, configuration management, and

VMs: creating from bare metal install?

2010-06-06 Thread Mark van Harmelen
Hi everyone I have no experience of virtualisation, apart from running VirtualBox here and there, and I'm wondering if anyone has an easy-to-do recommendation for me, please. We've been rebuilding one of our server set-ups that is fairly complex. Its on 9.10. Has anyone got any experience

Re: VMs: creating from bare metal install?

2010-06-06 Thread Mark van Harmelen
be able to do a complete reinstall and test in a day. Hmmm thinks It seems that the largest task here is negotiating the different options :) regards mark On Sun, Jun 6, 2010 at 11:40 AM, Serge van Ginderachter se...@vanginderachter.be wrote: On 6 June 2010 12:10, Mark van

Re: Manual fan control on a Proliant DL585?

2010-03-25 Thread Mark van Harmelen
A bit off topic? but wire cutters (lol) new fans eg something like http://www.quietpc.com/gb-en-gbp/products/amx-coolers/nh-d14 if they fit (yeah yeah are they server grade? at least they have two fans each) BIOS settings nice machine room somewhere ventilated cupboard bosses office I

finding bottlenecks on ubuntu systems

2009-11-13 Thread Mark van Harmelen
Hi everyone I've never done this before so all hints would be gratefully received. We are running a 9.04 server, with a single unthreaded process that is of interest, basically one that is busy transforming the contents of a mysql db. I want to find out if we can improve the performance of this

Re: Hardware RAID

2009-10-09 Thread Mark van Harmelen
Maybe try during the boot sequence to get into the raid setup and look there? Some control key or function key should get you into it, if you can do this the particular key should be displayed as part of the pre ubuntu boot messages mark On Fri, Oct 9, 2009 at 9:29 AM, Kaushal Shriyan

RAID stripe size?

2009-09-07 Thread Mark van Harmelen
Hi everyone, i'm building a raid array right now, RAID 0 (yup there's a reason), unidentified adaptec hardware in an ebay sourced server, 15K 73GB U320 scsi x3 (HP 360209-004) I'm being asked for a 16, 32 or 64 KB stripe size, any help soon appreciated!! thanks mark -- ubuntu-server mailing

Re: Ubuntu Server Tips

2009-08-17 Thread Mark van Harmelen
Hi there Dave Walker wrote: ...  Personally i'm finding it quite tricky to think of things that perhaps a novice server user would find useful, and i suspect the rest of you will agree.  Many of the tips seem obvious, until you actually think about them. Some thoughts to try and grow the

Re: SWAP Question?

2009-08-11 Thread Mark van Harmelen
Hi everyone On Mon, Aug 10, 2009 at 11:06 PM, Hakan Koseoglu ha...@koseoglu.org wrote: 4GB of RAM is not much for a busy database application Are there any rules of thumb or formulae for a good performant RAM size (per core?) for a busy data base server, mySQL is the database in