66MHz/32bit matches the lshw output I posted. And the machine does have 1 PCI-X slot. So I imagine they're using the same interface for the onboard SATA controllers. Whatever it has, each of 2 pairs of SATA ports seems to be on one of them. No offense intended, but reliability is more important than performance in this scenario. And although the machine is on a good UPS with apcupsd installed, it's not sitting in a data center, but in an office area. And I've found XFS to have pretty bad behavior on unlcean shutdowns. I'm used to the rock-solid reliability of ext3 in ordered mode, so even ext4 seems a bit reckless to me. I did compare XFS when it was configured to RAID1, and it was slightly better. Most of what this machine will be doing is single-threaded. But XFS is not an option for testing on an LV right now since the whole VG is sitting on an RAID10 at the default 512k chunk size, and XFS doesn't support larger than 256k chunks while maintaining optimal su and sw. I may grab the machine and bring it back to my office so that I can work with it "in person" over the weekend. It's currently remote to me. -Steve -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
