Raid question

[Romeo Theriault]

Thank you for your response. It is helping to clarify this for me.
After reading a little more about raid 10 on wikipedia, I realize I'm
going to have to do my research a bit more. When you say spindle
count, are you referring to actual harddisks or partitions on a hard
disk?

Thanks,

Romeo

On 6/9/06, Tobias Speckbacher <TSpeckbacher at quova.com> wrote:
>
>
> > -----Original Message-----
> > From: redhat-list-bounces at redhat.com [mailto:redhat-list-
> > bounces at redhat.com] On Behalf Of Romeo Theriault
> > Sent: Friday, June 09, 2006 11:40 AM
> > To: General Red Hat Linux discussion list
> > Subject: Raid question
> >
> > Hello, We are in the process of purchasing a new two new servers. One
> > of these servers is a database server and needs to have a Raid 1 for
> > the OS and Applications storage and a Raid 10 at least 146 gb for the
> > Database storage. My question is, Do I need to buy a server with two
> > raid controllers? One for each of the different arrays or can one
> > card do this?
>
> That would really depend on the applications you are going to run on the
> system along with the database.
>
> If the apps do not use a lot of disk io I would say you can host both
> containers on the same controller.  However, if the apps consume a
> decent amount of io, be it logging or whatever else it may do, spend a
> few bucks on an additional controller.
>
> In general the cost of a raid controller is low enough to just add one
> and eliminate that issue altogether.
>
> Depending on the amount of database access you may want to choose to
> deploy the database separate from your applications (different hosts).
>
> Also, your database volume is pretty "small", make sure you maximize
> your spindle count for optimal performance.
>
> 2 x 146 is worse than 4 x 72 is worse than 8 x 36 ... scalability
> concerns however may overrule io concerns in terms of spindle count
>
> -Tobias
>
>
> >
> > Thank you for any information on this.
> >
> > Romeo
> >
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