Re: 8-15 TB storage: any recommendations?

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Jan 11, 2010 at 03:00:41PM +0200, Pasi Kärkkäinen wrote:
> On Fri, Jan 08, 2010 at 12:33:39PM +0100, Rainer Duffner wrote:
> > Karanbir Singh schrieb:
> > > On 01/08/2010 01:58 AM, Christopher Chan wrote:
> > >   
> > >>> the thumpers make for decent backup or vtl type roles, not so much for
> > >>> online high density storage.
> > >>>       
> > >> I wonder how much that would change with a bbu NVRAM card for an
> > >> external journal for ext4 and the disks on md. Unless one cannot add a
> > >> bbu NVRAM card...
> > >>     
> > >
> > > Good question, they are after all ( the Sun 45xx's ) just opteron box's 
> > > with a mostly standard build. Finding a CentOS compatible ( drivers 
> > > pre-included, and not crap like cciss ) would not be too hard.
> > >
> > >   
> > 
> > 
> > With ZFS, the whole machine is the RAID-controller (basically).
> > NVRAM in ZFS would be used for L2ARC.
> > Of course, this ask for a sane system-desgin (which the thumpers do
> > have, as mentioned - AFAIK, there are virtually no off-the-shelf
> > motherboads that can offer the thumper's distribution of SATA-channels
> > over HT-links.
> > 
> > CentOS wouldn't run bad on such a motherboard, either (and RHEL is
> > supported).
> > ;-)
> > 
> 
> Last time I checked only RHEL4 was support.. RHEL5 lacks (properly working) 
> SATA driver for the controller used in the thumper.
> 
> Is RHEL5 supported/working nowadays?
> 

It seems X4500 (not available anymore) had Marvell SATA controllers, that
are not supported with RHEL5.

X4540 uses LSI SATA controllers, that are supported.

-- Pasi

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