I do not know where this was published but it seems interesting...
---
Reality leaves a lot to the imagination.
jinn@inetnebr.com
---------- Forwarded message ----------
Date: Thu, 19 Feb 1998 13:13:20 -0500
From: "Labry, Phillip" <Phillip.Labry@CWI.CABLEW.COM>
To: intp@jubjub.wizard.com
Subject: Mainframe solution,Lengthy but interesting...
Resent-Date: Thu, 19 Feb 1998 10:14:27 -0800 (PST)
Resent-From: intp@jubjub.wizard.com
Got this interesting article from an old friend of mine.........the
best approach seems to be to build GUI-based applications on the
front-end and use mainframes as big servers.
---------------------------------------------------------------
By Martin J. Garvey
The mainframe, once the IT backbone for many enterprises, is
regaining that stature. Next month, several large companies will lead
the charge back to big iron in an attempt to rescue unwieldy or
stalled client-server projects. Mainframes, these companies say,
provide better price/performance and return on investment than their
sleeker Unix and Windows NT systems, while delivering proven security,
scalability, and reliable centralized management.
GTE Data Services, Motorola Semiconductor, University Health
System, and others are at the cusp of a trend toward leveraging the
mainframe to back out of costly or unmanageable Unix and Windows NT
client-server implementations. Brian Jeffery, an analyst with
International Technology Group, an IT consulting firm in Los Altos,
Calif., says about 70 sites worldwide are porting Unix or NT
applications back to IBM OS/390-based mainframes. By fall, he
estimates, as many as 300 sites will convert Oracle, SAP, and
PeopleSoft projects to OS/390. "By 1998, there will be thousands of
these accounts," predicts Jeffery.
"It's a brand new life for the mainframe," says Cal Braunstein, a
consultant with Robert Frances Group, an IT market research firm in
Westport, Conn. "It's far less expensive to tie Unix and client-server
information into mainframes than it is to spread it out across much
smaller systems."
University Health System, a 450-bed hospital in San Antonio, hopes
to begin in August to move data-intensive applications, such as
patient accounting and discharge, to the IBM Parallel Sysplex
mainframe. The project is expected to be completed by year's end. "We
can't go in a direction of more and more resources for a nonending
distributed environment," says Tim Geryk, director of technical
services for University Health. "We need to turn it back the other way
for a better scale of economy."
Currently, University Health's enterprise has 2,500 desktops
attached to LANs, 100 RS/6000 Unix servers, about 600 other Unix
machines, 2,000 dumb terminals, an IBM ES/ 9000 bipolar mainframe, and
an IBM 9672 CMOS mainframe. "It's time-intensive to keep so many
workstations and servers up and running when so many different things
can go wrong," says Geryk. "We can't put our hands around it anymore."
The company is installing an IBM Parallel Sysplex architecture
that supports Unix applications to provide a single-platform image
across its enterprise. Bill Tudor, director of systems product
management for mainframe maker Hitachi Data Systems in Santa Clara,
Calif., says it's not uncommon to see multiple racks with 200 Unix
servers in the data center. "It's just cheaper to run that same
information on the mainframe," he says.
According to Jeffery of ITG, it's cheaper and easier to
increase network bandwidth for integration between Unix servers and
the mainframe than it is to add more Unix servers. Also, customers are
demanding that systems management, as well as enterprise data itself,
be centralized.
And according to the Clipper Group, a consultancy in
Wellesley, Mass., Unix's security hasn't caught up to the mainframe's.
Some intrepid IT users aren't just migrating some applications to
mainframes. They're also consolidating client-server architectures
onto big iron. One financial services company reportedly is
consolidating as many as 600 Unix servers onto one mainframe, sources
say.
The hidden costs of Unix servers may be the final incentive to
push many customers back to the mainframe. For example, CMOS
mainframes may cost three times more than Unix servers, but management
costs for distributed Unix servers are 20 times greater than those for
supporting a mainframe, according to Giga Information Group in
Cambridge, Mass.
IT managers can port Unix applications to the OS/390 mainframe
operating system for acceptable performance in a production
environment. Moreover, enterprise applications, including those from
Oracle, PeopleSoft, and SAP, are available on OS/390. And the CMOS
processor architecture, the heart of IBM's Parallel Sysplex mainframe
cluster that scales to 32 processors, is for the first time as
powerful as older bipolar mainframes.
Motorola's $7.9 billion semiconductor business unit in Phoenix
will begin moving all of its SAP R/3 data to the mainframe in the next
four months.
Its architecture will then include PC clients, Unix servers as
application servers, and an IBM OS/390-based Parallel Sysplex
mainframe as host for about 500 Gbytes of data. The company says it is
one of five pilot sites for SAP's R/3 on the mainframe. Before taking
on the pilot, the semiconductor manufacturer evaluated multiple Unix
servers and databases. The Unix systems lost to the mainframe because
they lacked the power and manageability Motorola was looking for. "It
was the best way to keep the database in one place," says Patrick
Horrigan, corporate VP and IS director for Motorola's SPS division.
"And it's 40% cheaper than the Unix solutions."
'Tons Of Unix'
At GTE Data Services in Temple Terrace, Fla., shifting its
distributed applications to the mainframe conforms to the division's
motto of "right data, right device." The group is consolidating six
systems into three or four. "With our so-called distributed systems,we
have tons of Unix out there, but it's really not even distributed,"
says operations director Pat Remick. "We're just piling a lot of Unix
boxes on raised floors next to the mainframes, so we decided to look
at the better reliability and scalability of the mainframe."
Analysts point out that server consolidation isn't relegated
solely to mainframes. HP and Sun Microsystems recently both announced
enterprise-class servers that many say will suffice as Unix
consolidation servers. "There is increasing value in consolidating
Unix servers and PC servers separate from mainframes," says John
Young, VP of enterprise systems planning for the Clipper Group.
"People are realizing the savings behind the re-emergence of the data
center. It's the place for consolidating processing, management,
accountability, and data storage."
The pioneers in the migration back to mainframes say they
aren't ready to dismiss Unix. "Our client and application server tiers
of R/3 will remain distributed with Unix," says Motorola SPS's
Horrigan. However, distributed computing could benefit from greater
reliability, availability, and scalability. "Downtime from distributed
systems costs too much in management, and I know a lot of processing
is on Unix," says GTE's Remick. "But some transition must happen.
Something has to be done."
SIDEBAR:Reasons For Returning
* Mainframe security is at least two years ahead of Unix or Windows
NT
* OS/390 can run Unix, NT, and enterprise applications such as SAP
R/3
* Mainframes have the capacity to store a database of 500 Gbytes or
more without splitting it up
* Parallel Sysplex configurations have no single point of failure
and are easy to update and maintain while the system is running
Data:
InformationWeek
--