Mehdi wrote:
Thanks for replies, so seems that the main reason behind using zLinux under z/VM is to have shared resources (CPU, DASD,...) in better management. Will you suggest z/VM if you have to install z/OS instead zLinux too or that is another story?
z/OS is a proprietary OS from IBM designed and engineered specifically for the IBM System z series of Mainframe computers. z/OS performs at its best in a non virtualized environment, and that is how a production z/OS should be installed and run. For testing purposes it is possible to run complete Sysplexes under z/VM, but performance will suffer. Linux for System z is at its heart still Linux, and hence was never or will ever be designed nor engineered with the IBM System z in mind. By running Linux under z/VM which was designed and engineered for IBM System z, you can isolate many of the potential incompatibilities that exist, or may exist in future, between Linux and the IBM System z. Note that the Open Solaris for IBM System z project learned from Linux's experiences, and they ported it _ONLY_ to run under z/VM so as to avoid direct dependencies on the IBM System z,
Main reason why I want to try zLinux on zSeries is to have some services like mail/web/ftp... on the Z machine and see if Java applications have better performance on zLinux than z/OS, any ideas?
It should not just be a measure of performance, but also of cost - TCO etc. IBM System z is a business machine, not a home PC. mark /* "All that we are is the result of what we have thought. If a man speaks or acts with an evil thought, pain follows him. If a man speaks or acts with a pure thought, happiness follows him, like a shadow that never leaves him. " Lord Buddha */ ---------------------------------------------------------------------- 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
