Running the Linux operating system as a guest of z/VM is a smart choice.
Consider the following benefits VM offers a Linux guest
Resources can be shared among multiple Linux images running on the
same VM system. These resources include: CPU cycles, memory,
storage devices, and network adapters.
Server hardware consolidation.
Running tens or hundreds of Linux instances
on a single System z server offers customers savings in space
and personnel required to manage real hardware.
The virtual machine environment is highly
flexible and adaptable. New Linux guests can be added to a VM
system quickly and easily without requiring dedicated resources.
This is useful for replicating servers in addition to giving users
a highly flexible test environment.
System z advantages
Running Linux on VM means the Linux guest(s) can transparently
take advantage of VM support for System z hardware architecture and
z/VM provides high-performance communication among virtual
machines running Linux and other operating systems on the same
processor. The underlying technologies enabling high-speed TCP/IP
connections are virtual channel-to-channel (CTC) adapter support and
VM IUCV (Inter-User Communication Vehicle).
the network by using HiperSockets™ may
provide savings and reduce cabling, hubs,
switches, and routers, as well as help to reduce
Linux on zSeries includes a minidisk device driver that can access
all DASD types supported by z/VM.
Data-in-memory performance boosts are offered by VM exploitation
of the z/Architecture.
VM offers a functionally rich debug environment
that is particularly valuable for diagnosing problems in the Linux
kernel and device drivers.
Control and automation
VM's long-standing support for
scheduling, automation, performance monitoring and reporting, and
virtual machine management is available for Linux virtual machines
An effective way to grow your Linux workload
capacity is to add more Linux guests to a VM system.
supports Integrated Facility for Linux (IFL)
processors, the attractively-priced hardware
feature for Linux workloads available for System z.
IBM introduced a new engine-based Value Unit pricing announced for z/VM
V5, replacing the per-engine pricing model that was available with z/VM
V4. Engine-based Value Unit pricing is designed to provide a decreasing price
curve as hardware capacities and workload grow, which may help improve