> Hercules does not support the IP stack so I can't see how z/VM under > Hercules could be used in a production environment.
Modern versions do, at least as long as the various operating systems continue to support LCS devices. > I can't see the benefit of running > Linux->Hercules->z/VM->zLinux. am I > missing something here? There are a fair number of older sub-40 MIPS processors that would be ideal candidates for a small box that is a) less expensive than a Flex-ES or cFrame box, b) physically much smaller than the existing hardware or that supports internal DASD. If that box was also capable of the latest architectural features (64-bit, etc), then there's a fair demand for such a beast. Consider also that the smallest z890 plus external DASD and tape is roughly 10-20x the physical size of a more powerful, more disk-rich Intel box (50-100 sq ft for the z890+Shark+tape, vs 10-12RU for a 27 390 MIP 2 way intel box and a good size SCSI/SATA array), and consumes at least 4-5x the power/cooling/etc. > IBM must feel that if Hercules was to take off, it might hurt > s/390 sales. > On the other hand, anybody who wants to run on Intel without > the extra RAS > from the z-Series can do it without zVM (think Virtual-Linux) > on an Intel. Doesn't help you if you need to run VSE or small z/OS dev workloads, or replace an existing VM system running on older hardware -- lots of MP2000 and small MP3000 machines out there doing important stuff. There is a testing issue -- Fundamental Software does a bunch of verification stuff that allows IBM to assume that VM, VSE, z/OS, etc run correctly w/o having to test everything multiple times. It's a legitimate concern. There have been repeated calls for a "hobbyist" class VM/VSE/z/OS license to allow individuals to legitimately license the 390 operating systems, similar to what DEC did with VMS and Tru64 (they allowed DECUS, the DEC users group, to administer a hobbyist sublicensing program). It'd be nice if WAVV or SHARE picked up such a role. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
