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From:Johan De Meersman Date:November 25 2009 2:09pm
Subject:Re: AW: Virtual servers, Raid 10 or Raid 01 - your opinions?
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I'm not really clear on what you hope to accomplish by putting two virtual
servers on the same host ?



On Wed, Nov 25, 2009 at 1:35 PM, Götz Reinicke - IT-Koordinator <
goetz.reinicke@stripped> wrote:

> Majk.Skoric@stripped schrieb:
> >> -----Ursprüngliche Nachricht-----
> >> Von: Götz Reinicke - IT-Koordinator
> >> [mailto:goetz.reinicke@stripped]
> >> Gesendet: Mittwoch, 25. November 2009 12:05
> >> An: mysql@stripped
> >> Betreff: Virtual servers, Raid 10 or Raid 01 - your opinions?
> >>
> >> Hi,
> >
> > Hi,
> >
> >> I do get two new Sun Fire X4170 servers with 8 SAS 300GB HDs, 24 GB RAM
> >> each.
> >>
> >> Right now, we do not have a lot of data in our databases (5 small LAMP
> >> servers), which should be consolidated.
> >>
> >> (The second Sun Fire X4170 will be the Webserver-Sun, the DB-Traffic
> >> will have his own gbit switch (Webserver-Sun <-> MySQL-Sun) )
> >>
> >> There are more reads than writes.
> >>
> >> To simplify matters, I'd like to use virtual MySQL-Servers (Master and
> >> Slave) on the sun and use one large raid.
> >
> > Putting the question a bit higher for better understanding.
> >> What RAID would be the better choice? 10 or 01?
> >
> > Generally RAID 10 is more robust and fault tolerant. Some things
> depending on
> > the controller if it's smart or not. But rebuilding the raid in case of
> an error
> > is much faster with RAID10.
> >
> > If you want to know more read
> > http://www.pcguide.com/ref/hdd/perf/raid/levels/multXY-c.html
> >
> > Concl.: RAID 10 is a good choice!
>
> Thanks.
>
> >> Also I was thinking, to use one RAID 1 for the virtualisation-system
> >> and
> >> the other six harddisks for the virtual servers.
> >
> > It's not fully clear to me what you mean with virtual MySQL-Servers.
>
> I'll install Citrix Xen Server and than two or more virtual Redhat EL /
> Centos/ .... Servers on one SUN Fire server. (Next year I'll get some
> more physical servers for clustering/failover/loadbalance)
>
> So I'll use two disks for the xen server software and one raid 10 for
> the virtual machines.
>
> >
> > HTH!
>
> It did. Thanks.
>
> /Götz
> --
> Götz Reinicke
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>
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Thread
Virtual servers, Raid 10 or Raid 01 - your opinions?Götz Reinicke - IT-Koordinator25 Nov
  • Re: Virtual servers, Raid 10 or Raid 01 - your opinions?Krishna Chandra Prajapati25 Nov
  • Re: Virtual servers, Raid 10 or Raid 01 - your opinions?Johan De Meersman25 Nov
  • AW: Virtual servers, Raid 10 or Raid 01 - your opinions?Majk.Skoric25 Nov
    • Re: AW: Virtual servers, Raid 10 or Raid 01 - your opinions?Götz Reinicke - IT-Koordinator25 Nov
      • Re: AW: Virtual servers, Raid 10 or Raid 01 - your opinions?Johan De Meersman25 Nov