> On 2 Aug 2023, at 12:15 pm, Tom Brennan <[email protected]> wrote: > > > The IBM z16 can have up to 1,536 PCIe+ slots > > I'm gonna quit explaining this and just say, "WRONG" every time you say this > as if it's a fact :)
I’ve missed this thread. By 1,536 PCIe slots, that’s slots not lanes right? Even if it were lanes that would be a ludicrous suggestions! That’s so far fetched it’s laughable. The Redbook [1] is quite clear about I/O configurations. What I find interesting is that the z16 seems to use PCIe gen 3 and not gen 4 which doubles the transfer rate per lane. There must be a good technical reason for this. [1] https://www.redbooks.ibm.com/redbooks/pdfs/sg248951.pdf > > On 8/1/2023 8:01 PM, Jon Perryman wrote: >> > On Tuesday, August 1, 2023 at 05:20:33 PM PDT, David Crayford >> <[email protected]> wrote: >>> What’s the difference between between channelized I/O and a rack of >>> x86 servers connected to a SAN using fibre channel driven by high speed >>> HBAs? >> PCIe was created specifically for PCs and IBM z16 chose to use that as their >> only channel technology. Channelized I/O for PC has been available for >> several decades and is not limited to PCIe. The IBM z16 can have up to 1,536 >> PCIe+ slots. >> As for x86 fiber channel connection to a PC, PCIe is only one possibility. >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
