[johnnym]

I don't know the exact specs, but this looks like a Mylex DAC to me. Ah, indeed, it says DAC960LB on that thingy above the memory slot.

The SCSI controllers are Symbios Logic 53c720s, which according to this datasheet support up to 20 MiB/s (Fast-Wide SCSI). So theoretically up to 60 MiB/s could be possible with three of them on the same controller.

Before you buy one, let me check my inventory, because I have a few of those Mylex DACs laying around (incl. more modern eXtemeRAID ones). I used to have a Mylex eXtremeRAID 1100 in my Primergy 560 after using a DAC960PG/PJ with 6 disks in the 560 and 9 disks in a disk array aggregated to a RAID5 with one or two spares (don't remember exactly). Performance wasn't great (30 to 40 MiB/s under Slackware 10 or 11 IIRC). Unfortunately the i450GX doesn't have a good PCI performance. The older i430 Pentium chipsets were much better in this regard, I believe more than 80 MiB/s were possible with them.