Mixing SAS and SATA drives

[Tony Molloy]

On Tuesday 04 March 2008 11:11:56 Mark Watts wrote:
> On Tuesday 04 March 2008 10:51:12 Tony Molloy wrote:
> > On Tuesday 04 March 2008 09:49:37 Hostmaster wrote:
> > > >>>Can't mix SATA and SAS disks. So we can't supply 2X73GB, SAS,
> > > >>> 3.5-inch, 15.000 rpm Hard Drive 4X750GB, SATA, 3.5-inch, 7200 rpm
> > > >>> Hard Drive. Instead I've configured 2X73GB, SAS, 3.5-inch, 15.000
> > > >>> rpm Hard Drive 4X400GB, SAS, 3.5-inch, 10,000 rpm Hard Drive.
> > > >
> > > >Can I do this and if I can how do I get Dell to supply me with that
> > > >configuration.
> > >
> > > AFAIK its *technically* possible to mix them, however it isn't a Dell
> > > supported configuration, therefore they won't sell them that way.
> > > Several of the guys from Enterprise Storage frequent these lists, so
> > > they will be able to give you the final word, but it might just be
> > > easier to buy the server with the supported config (ie just the two SAS
> > > drives for the OS), and then put a separate order for the four SATA
> > > drives, but check with someone who knows the PERC6/i better than me
> > > before buying!
>
> This question has been asked before.

As I said in my mail I know it has been asked before but I'm just about to 
spend 50,000+ euros on a rack so I wanted to be sure.

>
> You can mix SATA/SAS disks on the same backplane, but the cannot be in the
> same logical volume.
>

That was my impression of the previous thread so my RAID1/RAID5 configuration 
should work. The problem then is to get Dell to sell that configuration to 
me.

Thanks,

Tony
> http://lists.us.dell.com/pipermail/linux-poweredge/2008-February/035159.htm
>l