> 64-bit guests run on Flex-ES. If you can *get* the 64-bit zSeries enablement code. That's the first (and more critical) problem.
> Just much more slowly than they need > to. Separate (but related) problem. > My understanding is that IBM refuses to allow Flex-ES to be licensed > on 64-bit host OSes, at least for PWD members, which we are. No, it's a two part issue -- see above. Once the 64-bit zArch enablement code is accessible, then it's a question of exploitation of 64-bit host capabilities. A 2-way Opteron box could deliver O(150) zSeries MIPS if it was allowed to operate in native 64-bit mode. The Flex code that is accessible to the public is still a) 32-bit only, and b) doesn't enable zArchitecture mode for non-PWD members. > Hercules is also, as far as I know, > slower on the same hardware than Flex-ES; one of its design goals has > been portability, and it explicitly trades performance for > portability. Point is, it's a nonstarter for a shop that wants to do > Linux-on-z/VM and not Linux-in-an-LPAR. It's also a violation of the license agreements for z/VM et al. > We have neither money, space, nor power for a real z9, even a small > one, and its associated disks. This is the largest issue: environmentals. 400 sq ft for z9+disk plus at least 3 dedicated 30A (or more) circuits, versus 4RU for the dual Opteron box AND 3.5TB of disk, both of which run on 110VAC. Add another 4RU for a 3480 autoloader, also 110VAC. That one's easy. -- db ---------------------------------------------------------------------- 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
