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z/VM V5.1 Hardware Support
(Pertaining to announcements in October 2004 and January 2005)
On October 7, 2004 and January 25, 2005, IBM
announced new enhancements
for the IBM
 zSeries z990
and z890. Many of these enhancements are
supported by z/VM via the service stream. These enhancements
and support dates are described below.
Updated: 11 July 2005
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Enhancement and description
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Crypto Express2
provides the functions of PCICA and PCIXCC in a single feature
that is expected to provide improved secure-key and system throughput.
Like its predecessors, the Crypto Express2 feature has been designed to
satisfy the security requirements of an enterprise server. z/VM V5.1
provides z/OS® and Linux for zSeries guest support for the Crypto Express2
including:
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Dedicated-queue support for clear-key and secure-key cryptographic functions
for z/OS guests
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Shared-queue and dedicated-queue support for clear-key cryptographic functions
for Linux on zSeries guests, with up to 256 dedicated queues
Date Supported: January 28, 2005. No PTFs required
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OSA-Express2, a new generation of zSeries LAN adapters being
delivered, along with a 10-Gigabit Ethernet (GbE) feature, can help
satisfy application bandwidth demands. Both OSA-Express2 GbE and 10 GbE
support the Queued Direct Input/Out (QDIO) mode, carrying TCP/IP traffic
when supporting Layer 3 traffic and protocol-independent when supporting
Layer 2 traffic.
- OSA-Express2 Ethernet Features
z/VM V3.1, V4.3, V4.4, and V5.1 supports the OSA-Express2 Ethernet features.
Date Supported: January 28, 2005
No PTFs required
- Layer 2 – ideal for server consolidation
The OSA-Express2 Ethernet features with the Layer 2 support in z/VM for
Linux images
can be protocol-independent and simplify the communication with different
platforms
when using internetwork packet exchange (IPX), NetBIOS, SNA, IPv4 or IPv6
protocols.
With the OSA-Express2 features and the Layer 2 support using the z/VM
Virtual Switch
(VSWITCH), router virtual machines can be eliminated, thus reducing z990
or z890 CPU
utilization. With z/VM V5.1, VSWITCH exploits the Layer 2 support within
the z/VM CP. The z/VM CP owns the connection to the OSA-Express2 feature
and manages the Media Access Control (MAC) addresses and VLAN
connectivity of the attached guests.
Linux on zSeries can exploit the Layer 2 support
on OSA-Express or OSA-Express2 and the z/VM VSWITCH
with z/VM 5.1.
Date Supported on OSA-Express: December 17, 2004
Date Supported on OSA-Express2: January 28, 2005
PTFs required: APARs VM63538 and PQ97436
- Improved virtualization - 640 TCP/IP stacks
If you need to host more Linux images, increasing the number of TCP/IP stacks
may be a
solution. The OSA-Express2 features support up to 640 connections (TCP/IP
stacks) per
LPAR per dedicated CHPID, or up to 640 total stacks across multiple LPARs using
a
shared or spanned CHPID. This is four times the number of connections than the
previous
OSA-Express features could support, which were limited to 160 total
stacks. z/VM V5.1
supports this increase in total stacks.
Date Supported: January 28, 2005
PTFs required: APARs VM63524 and PQ91421
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OSA-Express
provides TCP/IP stack utilization improvements. The number of
TCP/IP stacks that can share an OSA-Express adapter increased from 84 to 160
on October 29, 2004. This increase provides additional connections to help
enable more virtual machines to be connected to an external network. z/VM
V3.1, V4.3, V4.4, and V5.1 supports this increase in number of TCP/IP stacks
on OSA-Express. z/VM V3.1, V4.3, and V4.4 supports this increase in number of
TCP/IP stacks on OSA-Express2. z/VM V5.1 supports up to 640 stacks on
OSA-Express2. Without the required service listed below, only 84 stacks per
LPAR are supported by z/VM on OSA-Express and OSA-Express2.
Date Supported: January 28, 2005
PTFs required: APARs VM63524 and PQ91421
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FICON Express2
offers new packaging with increased connectivity in the same
amount of physical space. This refresh of technology can help satisfy your
server-consolidation connectivity requirements and may help reduce the number
of I/O features required for consolidation. FICON Express2 provides a 100%
increase in channels per feature in the same amount of physical space and an
increased number of start I/Os over FICON Express. z/VM V3.1, V4.3, V4.4, and
V5.1 supports FICON Express 2.
Date Supported: January 28, 2005
PTFs required: APARs VM63610 for Hardware Configuration Definition (HCD)
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FCP Logical Unit Numbers (LUN) Access Control
provides added security for SCSI
devices residing on a SAN. For a logical partition that runs z/VM, you can
specify separate permissions for the VM system itself (when running z/VM V5.1
utilizing SCSI disks for system operations) and for each Linux guest. z/VM
V4.4 provides support for Linux guests.
Date Supported: January 28, 2005
PTFs required: APARs VM63328
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Enhancements and description
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Performance Toolkit for VM™
supports application monitor records created by the
SUSE LINUX Enterprise Server 9 (SLES 9).
Date Supported: December 3, 2004
PTFs required: APARs VM63580
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IBM TotalStorage DS8000 series
is designed to provide unmatched functionality, flexibility, and
performance for enterprise disk storage systems at new levels of cost
effectiveness.
z/VM V4.4 and V5.1 support the DS8000 series.
Date Supported: December 27, 2004
PTFs required: APAR
VM63534
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