McKown, John wrote:
-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:[EMAIL PROTECTED] On Behalf Of Craddock, Chris
Sent: Wednesday, November 09, 2005 6:27 PM
To: [email protected]
Subject: Re: HFS vs. zFS?
Well its late in the day and I just couldn't resist. So I'm a bad
person.
Suppose, for the sake of argument, that I want to keep all the z/OS
documentation that I currently have on a Windows share on
z/OS itself.
I plan to put it all in z/OS UNIX files and serve it up via
the HTTPD
server. This avoids any dependance on the Windows server for our
documentation.
Was there any compelling reason to move them? Seems to me if your z/OS
box is face down in the dirt for whatever reason, and you
need doc in a
hurry to get it upright again, that having the doc somewhere
other than
on the system that was down, or in trouble, was probably a good idea.
First, I haven't moved them. I was just asking. The only "compelling"
reason would be political. The Windows weenies here use ANY excuse to
bad-mouth the zSeries. "Look! Even the mainframers keep their
documentation on Windows! That says something about how much BETTER
Windows is than the mainframe, doesn't it?!?"
Was there ever a time when you needed to access the doc (on
windows) and
couldn't?
Hey, that's a great point! And to provide two-way redundancy,
he should store the Windows docs on z/OS. This way, if Windows
ever goes down, you have access to the Windows docs on your
... uh-oh [Windows-based] browser. Hmmm. Never mind.
I'm not pushing the idea of putting it on windows,
but if it's
already there anyway why move it? Worst case I suppose you could just
access it directly from the IBM pubs site and never need to
update your
own copy.
Actually, yes. Our LAN storage administrator destroyed the entire share
once. And the back had failed over the previous weekent (it takes them
most of the weekend to do their backups). So we lost about 3 weeks worth
of work.
The problem is that we only have 3390-3 sized volumes and don't want
any
other size. This means a single volume contains only about 2.8 Gb.
You DO realize that's just slightly over 1% (a rounding error) of the
250GB disk inside the PC I am writing this on? And while I'm
at it, who
cares how big those volumes are? They're all emulated anyway.
Seriously
folks, we have to get over this space thing on z/OS. We look
ridiculous.
I don't understand this. I get whined at about using up volumes. That is
how storage administration looks at things on the mainframe. Are you
saying that using a 3390-3 is silly? That a 3390-<big momma> would be
better? If so, then how do I get these large volumes at D.R.? The
"industry standard" is 3390-3 and I've been told that getting any other
size would cost a premium. We are migrating away from volume level to
dataset level backups, so we will be able to address this later (if
there is a later for the zSerie here). Also, we don't have PAV, so
performance is an issue. PAV costs more money. We ain't getting it iffin
it costs more! (cheap decendants of a long line of bachelors)
The entire subdirectory that I would like to duplicate
contain almost
6 Gb
of data. This basically means two complete 3390-3 volumes to contain
it.
So you wanna waste a whole 6 gigs of disk for doc! What a resource hog
you are. I bet your storage administrator has to jiggle
things left and
right to accommodate your rampant storage profligacy. Sorry, I got
carried away.
You think that is bad? Keep away from my PCs at home! At last count, on
three desktops and one laptop, I probably have about 1.5 to 2 terabytes
of disk. <none of it backed up - I finally got a DVD-R dual layer
burner>. I wouldn't mind using less space on the Windows share, we
certainly get whined at enough about it. But that is how much all the
PDFs for vendor manuals, redbooks, et al, along with bloated MS Word
documents take up.
Should something this large be zFS? Or is HFS OK?
Something that large? <snort, giggle, wipe tears> Um sure, why not?
Is there any documentation on the pros/cons of zFS vs. HFS?
I have zFS
implemented on my sandbox z/OS 1.6 system. But not on my production
z/OS
1.4 system.
zFS is the way to go because aside from the functional
benefits of zFS,
HFS has been functionally stabilized. You can do what you are
suggesting
easily enough. I just wonder whether it's worth the cost and
aggravation.
And that last is what I'm trying to figure out. Another political plus
is to be able to show management that the z/OS system can do web
serving. Granted this is a minor application, but management is totally
convinced that the z/OS system is "mired in the past" and cannot do
things like serving web pages, SOAP, etc. That perception makes them
immediately want to implement everything new on Windows.
So why don't you demo it to them? A little z/OS UNIX configuration
twiddling, upload a pdf file in binary, and then point your browser
to the HTTP server.
Talk to me off list if you just want to show them a PDF file
served from a mainframe. I'm sure I can arrange a demo of
serving a PDF from our zPad (z/OS running on a ThinkPad).
CC
--
John McKown
Senior Systems Programmer
UICI Insurance Center
Information Technology
Kind regards,
-Steve Comstock
The Trainer's Friend, Inc.
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