Re: capacity planning question (fwd)

>
> Also, there was a figure floating arround the list quite a few times
> - 8 Megs of Ram per disk is the minimum practical amount, and will
> probably be a driving factor in the amount of hard drive space you
> should set aside.

Actually that should be 8 Megs of Ram per Gig of disk (and remember
to leave space for the OS)

>
> Cheers,
> David
>
> On Sat, 18 Dec 1999, Kendall Lister wrote:
>
> > On Fri, 17 Dec 1999, Terence Kelly wrote:
> >
> > > However I haven't been able to infer from scattered data like this
> > > the principles that admins apply when deciding how much RAM & disk is
> > > appropriate for a cache serving a given workload.
> >
> > A recently suggested rule of thumb is that you want to be able to store 3
> > - 5 days worth of traffic; if you are serving 1.5 Gb per day, you will
> > get optimal caching vs cache size by using 5 - 10 Gb of disk storage. This
> > will then require that you have enough RAM to hold approximately 4 -
> > 800,000 objects, at something 100 bytes per object, i.e. 40 - 80 Mb plus
> > sundry storage and processes.
> >
> > I hope my (very) rough figuring isn't too far wide of the mark.
> >
> > --
> > Kendall Lister, Systems Operator for Charon I.S. - kendall@charon.net.au
> > Charon Information Services - Friendly, Cheap Melbourne ISP: 9589 7781
> >
>
Received on Sat Dec 18 1999 - 01:16:21 MST