Security considerations
No IT server platform is 100% secure and useful at the same time. If your server is installed in a secure vault, three floors underground in a double-locked room, not connected to any network and switched off, one would say that it was reasonably secure, but it would be a stretch to call it useful.
With z/VM as a hypervisor, Linux on System z gains some of its most valuable security and integrity features. Linux running in an LPAR on System z is attractive for certain highly demanding workloads but for flexible server consolidation ...

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