On 20/03/2016 10:50 AM, Tom Marchant wrote:
I'm skeptical of all that but assuming all that, where are they going to get the I/O bandwidth needed?
Emulex sells an HBA that handles over 1M IOPS on a single port. IIRC, x86 Xeon class servers have something called DDIO which facilitates writes directly to processor cache. It's not too dissimilar to offloading I/O to SAPs. I've got old colleagues that work on distributed now and they are of the opinion that I/O bandwidth is not an issue on x86 systems, but it's not exactly commodity hardware. They're all hooked up using 16Gbs fiber connected to a SAN using PCIe, the same as z Systems.
I would question the RAS capabilities rather than I/O. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
