Filter
Top Products
85
z/VM provides the capability to account for the use of
system resources by virtual machines, including those run-
ning Linux. Accounting records are produced that track a
virtual machine’s use of processor, paging, I/O, and virtual
network resources, including virtual channel-to-channel
adapters (CTCAs), inter-user communication vehicle (IUCV)
or advanced program-to-program (APPC) connections, and
virtual (guest LAN) network interface cards (NICs).
z/VM V4.4 extends its virtualization technology in support of
Linux and other guests while providing some enhancements
that enable z/VM to be self-optimized and self-managed:
• Reducing contention for the z/VM Control Program (CP)
scheduler lock may help increase the number of Linux
and other guest virtual machines that can be managed
concurrently.
• Enhancing the Virtual Machine Resource Manager
(VMRM) to provide the infrastructure necessary to sup-
port more extensive workload and systems resource
management features by providing:
– monitor data showing actual workload achievement
– an interface to dynamically change users in work-
loads, workload characteristics, and goals
– more fl exibility using the VMRM confi guration fi le when
managing multiple users
– improvements in the reliability and performance of the
VMRM service virtual machine’s monitor data handling
– serviceability enhancements including improved mes-
sages, logfi le entries, and new server options
• Simulating virtual FICON CTCA devices for guest oper-
ating systems enhances previous virtual-CTCA support
by adding the FICON protocol as an option for guest
operating systems. Guests use virtual CTCAs to commu-
nicate among themselves within a single z/VM system
image, without the need for real FICON CTCAs.
• Supporting real and virtual integrated 3270 console
devices. Real support enables this device, provided by
the Hardware Management Console (HMC) to be used
as the system operator console. Virtual support enables
testing of guest operating systems and utilities such as
Stand-Alone Program Loader (SAPL) and standalone
DASD Dump-Restore (DDR), that support the integrated
3270 console device.
•
Delivering the Performance Toolkit for VM
™
to process
Linux
performance data obtained from the Resource
Management Facility (RMF) Performance Monitoring
(PM) client
application, rmfpms. Linux performance data
obtained from RMF is presented on display screens and in
printed reports
similar to the way VM data is viewed and
presented.
With corresponding function available in Linux on zSeries
and S/390, z/VM V4.4 provides:
• The attachment of Small Computer System Interface
(SCSI) devices to guest Linux images using Fibre Chan-
nel Protocol (FCP) channels on zSeries processors
• IPL from FCP-attached disks for Linux and other guest
operating systems with necessary SCSI support, when
z/VM is running on a z990, z890, z900, or z800 server
equipped with the SCSI IPL Feature Enabler
• Enhanced page-fault handling
• Clear-key RSA functions of the IBM PCI Cryptographic
Coprocessor (PCICC) or the IBM PCI Cryptographic
Accelerator (PCICA).
Exploiting New Technology
z/VM provides a highly-fl exible test and production environ-
ment for enterprises deploying the latest on demand busi-
ness solutions. Enterprises that require multi-system server
solutions will fi nd that z/VM helps them meet the demands
of their businesses and IT infrastructures with a broad
range of support for such operating system environments