Opteron in a Dell?
dhubbard at dino.hostasaurus.com
Fri Apr 28 15:42:17 CDT 2006
From: Dan Pritts [mailto:danno at internet2.edu]
> On Fri, Apr 28, 2006 at 09:08:05AM +0100, Greg Cope wrote:
> > "traditionally" sun have used software raid on the hosts,
> > and hardware raid on the external storage (if required).
> > This is a generalisation.
> Supposedly the x4100 and x4200 have hardware RAID 1 suppport.
That's correct, they have an LSI controller built on:
02:03.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064 PCI-X
Fusion-MPT SAS (rev 02)
But it can only do striping or mirroring, no raid 5
and no raid 10. With the largest SAS drive available
currently being 73 GB, it leaves you with quite limited
options. Evidently HP has some better options with
similar Opteron-based systems that have SAS but also
have SCSI and SATA options, and real raid controllers.
I don't know how well their lights out works though,
Sun's is really impressive, you can power cycle, on/off,
get into the bios and everything from over the network.
I did some measurements last night of a 4200 with four
73 GB drives and two 2.8 GHz single-core cpu's vs
an 1850 with two 140 GB 15,000 rpm drives and two 3.8 GHz
Xeon's. At idle the 1850 drew 1.9 amps at 110v while the
2100 drew 2 amps. Under 100% load on cpu and disks
thanks to bonnie and cpuburn running at the same time,
the 1850 shot up to 3.55 amps while the Sun kept it at
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