z/OS Customer Forum Presentation 030507

donkeycheerfulInternet and Web Development

Aug 7, 2012 (5 years and 11 months ago)


z/OS 1.7 Migration

Technical Overview

March 5, 2007

DTS Introduction


Robert Jenkins


DTS Engineering Division Platform Branch z/OS 1

Presentation Slides will be available on the DTS website

Evaluation Survey

Upcoming DTS Technology Days and Customer Forums

Network Customer Forum (March 7, 2007)

Cal Net II Customer Forum (March 8, 2007)

Gartner Technology Day on Industry Trends (tentative April)

Look for more DTS events coming soon at


Starting with z/OS 1.6, IBM has aligned the coexistence,
fallback, and migration policy with the service policy.

z/OS 1.4, z/OS 1.5, z/OS 1.6, and z/OS 1.7 are
supported for coexistence, migration, and fallback.

The lowest release planned for coexistence, migration,
and fallback support on z/OS 1.8 is z/OS 1.5.

End of Service

General Availability

Service Expiration

z/OS 1.4
September 27, 2002

March 31, 2007

z/OS 1.5
March 26, 2004

March 31, 2007

z/OS 1.6
September 24, 2004

Planned for September 2007

z/OS 1.7
September 30, 2005

Planned for September 2008

z/OS 1.8
September 2006

Planned for September 2009


Current Operating System @ Gold Camp


Planned Operating System @ Gold Camp

z/OS 1.7 Improvements

Ease of use

Health Checker for z/OS
More checks,
integrated in z/OS, and new user interface

Hardware Configuration Manager

can simplify
I/O configuration and planning

SMP/E Internet Service Delivery
can simplify
and automate service acquisition

z/OS Network Security Configuration Assistant

IBM OMEGAMON®z/OS Management Console
(separate product

z/OS 1.7 Improvements

Networking and Security

Encryption Facility for z/OS to help protect data
shared with partners, suppliers, and customers

RACF enhancements

bit cryptography support in ICSF, AES (128)
support for TLS and SSL apps

Application Transparent TLS

IPSecsupport planned for z/OS 1.8

z/OS 1.7 Improvements


way z/OS image

Support for MIDAW and Multiple Channel
Subsys (with System z9)

Support for larger sequential data sets, more
then 255 extents per VSAM

z/OS 1.7 Improvements


z/OS Load Balancing Advisor

Improved management with WLM and Sysplex

IP Automatic Takeover when IP stack is not

z/OS UNIX System Services dynamic service
activation may reduce the need to IPL

Improved GDPS options for high volume apps
with XRC+

z/OS 1.7 Improvements

Application and Data Serving Support

Improvements to Language Environment®,
zSeries File System (zFS), C/C++, z/OS UNIX
System Services

Support for zAAP and ZIIP

"Big Migs" from z/OS 1.4 to z/OS 1.7

Migration Actions You SHOULD NOT Overlook:

z/OS 1.6 Architecture Level Set

must be z/Architecture™ mode

Use the z/Architecture checklist provided.

z/OS 1.7 BCP most of the 1
byte Console ID support removed

Use the Console ID Tracking Facility, introduced in z/OS V1R4

Consoles Enhancement feature with the latest exclusion list now.

z/OS 1.7 XL C/C++ does not ship the OS/390 2.10 Compilers

Move to the ISO C/C++ compilers now, may still use OS/390 2.10

compilers from prior system.

z/OS 1.7 HCD IODF V5Coexistence considerations with lower


z/OS 1.7 DFSMS JOBCAT/STEPCAT support removed.

z/OS 1.5 Enhancements

Level Security

Combined with IBM’s DB2 UDB for z/OS Version 8, z/OS provides
multilevel security on the zSeries mainframe to help meet the stringent
security requirements of government agencies and financial
institutions, and can help open up new options for e
hosting facilities.

Multilevel security technology allows IT administrators to give users
access to information based on their need to know, or clearance level.
It is designed to prevent individuals from accessing unauthorized
information and to prevent individuals from declassifying information.

With multilevel security support in IBM’s z/OS 1.5 and DB2 V8,
customers can enable a single repository of data to be managed at the
row level and accessed by individuals based on their need to know.
For example, a person with a top secret clearance can be enabled to
access more information in a database than someone without that
clearance level

z/OS 1.5 Enhancements

Self Optimizing

z/OS 1.5 simplifies WLM control for WebSphere.
Customers now have the choice to manually
define WebSphere application environments for
WLM or have WebSphere define them as and
when required.

z/OS 1.5 Enhancements


DFSMS can significantly enhance application backup by
enabling DFSMShsm to utilize volume level fast
replication. The fast backup is designed to exploit the
FlashCopy® and virtual concurrent copy capability of
IBM TotalStorage® Enterprise Storage Server® and IBM
RAMAC® Virtual Array (RVA) respectively.

DFSMShsm Fast Replication in z/OS 1.5 also provides a
fast, easy to use backup and recovery solution
specifically designed for DB2 Universal Database™
(UDB) for z/OS V8. It is designed to allow fast, non
disruptive backups to be taken at appropriate events
when there is minimum activity at the application level or
when a fast point
time backup is desired.

z/OS 1.5 Enhancements


Intrusion Detection Services were introduced in
z/OS 1.2. The scope of these services are
extended in z/OS 1.5.

z/OS 1.5 Enhancements

Simplified Management

Infoprint Central

is a graphical user interface for
managing print jobs and printers across
systems. The Library Center for z/OS is a new
internet facility to access the z/OS library, with
enhanced search facilities.

Managed System for Setup (msys for Setup)

an element of z/OS that makes it easier to define
and configure technologies on z/OS. With z/OS
1.5 four new technologies are supported by
msys for Setup: RMF, FTP, ISPF and DB2 UDB
for z/OS V8.

z/OS 1.6 Enhancements

Application Integration

Increased scale and performance

bit C/C++ application development and deployment

bit JAVA (available as separate product)

Improved performance

New C/C++ compiler options to exploit z890 and z990

Unicode performance improvements in z/OS UNIX

Improvements to z/OS UNIX

New commands supported (clear, uptime)

Enhanced Euro symbol support

built UNICODE environment

z/OS 1.6 Enhancements

Improved TCP/IP Network Management

Sysplex support for IPv6 industry standard

High availability

TCP/IP Sysplex enhancements

Automatic Takeover when TCPIP stack

is not

Monitor key heath indicators

Option to manage TN3270 in separate address
space from TCP/IP

Enterprise Extender enhancements for SNA over

z/OS 1.6 Enhancements

Simplified Management of z/OS Security Features


Support for recoverable passwords

Improved interoperability with LDAP change log

Ability to update most RACF classes without IPL

LDAP 64bit and IPv6 support

SSL enhanced certificate management

z/OS 1.6 Enhancements

Increased Optimization of Resources

WLM enhanced for DB2 stored procedures (can
prioritize dependent requests)

DFSMS improved placement of critical datasets

Allows the sharing of a single tape inventory
across multiple sysplexes (DFSMSrmm)

z/OS 1.6 Enhancements

Increased Scale of z/OS Workloads

way single image in z990 logical partition

way single image supported at general

z/OS 1.6 Enhancements

Improved Availability

Resource Recovery Services (RRS) restart
enhancements in sysplex

Exploiting resource managers (eg: DB2) can be
restarted on another z/OS 1.6 system without
necessarily impacting other applications

Reduce the need to IPL

PDSE restartable address space

Can reduce the need to re
IPL a system due to a hang,
deadlock condition, or out of storage condition

Rename LPAR without IPL (requires z890 and z990

Add and update most RACF classes without an IPL

z/OS 1.7 Enhancements

Simplifying z/OS Management

To help simplify systems management, the IBM Health Checker for
z/OS is now a base component of z/OS, providing an integrated tool
for checking on best practices for configuration values. Significantly
more checking is provided and the tool has a simplified user interface.

IBM intends to provide a new user interface for z/OS management
that is planned to help the new generation of Information Technology
workers by automating, eliminating, and simplifying many z/OS
management tasks.

The first phase of the new user interface is planned to provide real
time health check information executed by the IBM Health Checker
for z/OS and configuration status information for z/OS systems and
sysplex resources. The new interface contains built
in automation and
expert advice capabilities that provide detailed contextual information
on alerts and corrective actions.

z/OS 1.7 Enhancements

Simplifying Network Security

As security concerns continue to increase, more enterprises are
deploying network security protocols, such as IP Security (IPSec)
and Transport Layer Security (TLS) on z/OS to protect their mission
critical data as it crosses the network.

However, the programming changes needed to enable applications
for security, and the complexity of security configuration can increase
the cost and deployment time for network security. In z/OS V1R7, we
add the following new functions to z/OS Communications Server to
address these issues by simplifying the requirements for
implementing network security on z/OS:

Application Transparent Transport Layer Security (AT
TLS). This
function provides TLS for TCP applications without requiring
application modification for TLS enablement.

Communications Server IPSec (CS IPSec). This function
provides an alternative to z/OS Firewall Technologies for host
based IPSec and IP filtering.

z/OS 1.7 Enhancements

Simplifying Network Security


Both AT
TLS and CS IPSec feature a policy

configuration that:

Requires less definition

Uses existing z/OS Communications Server
infrastructure, such as the policy agent

Is optimized for host
based security scenarios

To help you implement these new functions, z/OS V1R7
includes a new configuration tool, the Network Security
Configuration Assistant (NSCA). This tool combines the
configuration activities for AT
TLS and IPSec into a
single administrative task

z/OS 1.7 Enhancements

Other Enhancements

To help customers build and extend their z/OS applications, z/OS V1.7
delivers C/C++ enhancements and enhanced support for TLS
(Transport Layer Security) designed to be transparent to

The dynamic capabilities of z/OS are also extended with the TCP/IP
Sysplex Load Balancing Advisor for better interaction with network
based load balancers and integration between Sysplex Distributor
and Workload Manager.

z/OS V1.7 provides advances in business resiliency and security
with extensions to GDPS for system recovery and improvements in
RACF interoperability, including support for mixed
case passwords.

Customers also may see a reduction in their need for IPLs with
dynamic service activation for z/OS UNIX® System Services.

In addition, z/OS V1.7 can simplify network management with JES2
NJE support for TCP/IP (planned to be available in 1Q2006).

z/OS Support for the

IBM System z9

The new System z9
109, designed to provide
systems leadership in an integrated
heterogeneous infrastructure, is supported by
z/OS V1.4 and above.

The powerful combination of z/OS V1.7 and z9
109 can provide significantly increased I/O
addressability and bandwidth, designed to help
improve availability, performance, cryptography,
and problem diagnosis while providing more
options for network connectivity.

z/OS Support for the

IBM System z9


These new functions include:

Multiple subchannel sets support: Provides a second set
of subchannels for defining Parallel Access Volume
(PAV) aliases. This new function can help provide relief
from the 64K device limit by allowing PAV aliases to be
defined without making device numbers unavailable for
defining additional devices.

Support for additional subchannels on the z9
109: The
109 makes an additional 768 subchannels available,
making it possible to define up to 65,280 devices for
each z/OS LPAR.

z/OS Support for the

IBM System z9


Wild branch diagnosis improvement.

MIDAW (modified indirect addressing words) support:
The z9
109 implements a new function for channel
programming, modified indirect addressing words
(MIDAWs). MIDAWs can be used to move data over
FICON and ESCON (R) channels. For FICON channels,
this support can provide substantially better response
time while increasing overall channel bandwidth.
MIDAWs exploitation by z/OS is expected to improve
performance for some DB2 table scan, DB2 sequential
prefetch, BSAM, and extended
format data set
operations by reducing system overhead for I/O
requests, with no application changes.

z/OS Support for the

IBM System z9


z/OS V1.7 requires the z/Architecture, and runs
only on the IBM System z9
109 and zSeries
(z890, z990, z800, z900) servers.

z/OS V1.7 is an important release for all z/OS
V1.4 customers, because it is the last z/OS
release that they can migrate to in a single step.
End of service for z/OS V1.4 is March 31, 2007,
and customer plans to migrate to z/OS V1.7
should be in place to ensure migration is
complete by this date.


Thank You!

Your participation today is greatly