Ted,
What sort of extension equipment are you talking about?
For ESCON, 9km is knee in the curve for droop. I think the distance with
MM was 2km, and SM was 20k. Combining MM and SM I think ESCD or XDF allowed
was supported to 47km, and DWDM would run to 60km, and at that point you are
down to
In [EMAIL PROTECTED],
on 12/08/2005
at 01:39 PM, McKown, John [EMAIL PROTECTED] said:
Remember all of this was designed when 3277's were the main operator
console.
No. It was designed when the 1052-7 was the main operator console.
And the original ones could only display UPPER CASE.
The
Nothing special, just what is/was native.
Go from an ESCON director through the CO, and on to the
next director. No HYPERCHANNEL or anything like that.
Original message
Date: Sun, 11 Dec 2005 18:47:50 +0800
From: Ron and Jenny Hawkins [EMAIL PROTECTED]
Subject: Re: Channel Distances
BusTag:
122m (AFAIK 400 ft)
AFAIK the nominal speeds were 1.5, 3.0, and 4.5 MB/s
For Hitachi devices it could be 6.0 MB/s
ESCON:
MM - 3km
SM - 20km
Typical value in sales leaflets is 43km which means XDF feature (means
Single Mode) in CPC - 20km - Escon Director - 20km -Escon Director - 3km.
The following scenario:
Primary site is 2-member Parallel Sysplex configuration with datasharing
for CICS and DB2.
All DASD is mirrored to DR site using PPRC.
Due to some reasons it is now impossible to have coupling facility in DR
site for testing. Only one z/OS LPAR.
I need to change
Ted,
CO?
Native can have a lot of meanings depending on whether you are using SM
between ESCD.
If I recall correctly Hiperchannel was an emulated channel, and not a
channel extender.
Ron
-Original Message-
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of
Ted,
a lot of this info can be found in redbooks, specifically sg245444 z9 and
zSeries Connectivity Handbook.pdf
Marian
I was asked the maximum distance that an ESCON Channel
could span.
IIRC, it was 40km for CTC, 20km for tape, and 9km for DASD.
I was not believed.
Does anybody
- Original Message -
From: Shmuel Metz (Seymour J.) [EMAIL PROTECTED]
Newsgroups: bit.listserv.ibm-main
To: IBM-MAIN@BAMA.UA.EDU
Sent: Sunday, 11 December, 2005 2:31 AM
Subject: Re: public available IBM mvs machines ?
In [EMAIL PROTECTED], on 12/09/2005
at 01:36 PM, Chris Mason
Shmuel,
If the mainframe is to be defined as an electronic computer doing
commercial work - which, for example, I expect is a definition with which
IBM would agree - then we in/from the UK like to propose the LEO as the
pioneer. Here's a quotation snip from a BBC site:
Fifty years ago the great
Shmuel,
My best memory of the frantic golf-ball that was the 1052 when supporting
OS-MVT (it was much quieter with BOS and DOS) was when the morning shift was
starting up as I was finishing a night's testing. The lead operator knew
just exactly when a WTOR had been issued by the system but still
[EMAIL PROTECTED] (Shmuel Metz , Seymour J.) writes:
BTW, IBM rejected a requirement for FBA support decades ago. Maybe
it's time to resubmit.
big part of the issue was alternative implementations for multi-track
search used in vtocs and pds directories. misc. multi-track search
stories
[EMAIL PROTECTED] (Ron and Jenny Hawkins) writes:
Native can have a lot of meanings depending on whether you are using SM
between ESCD.
If I recall correctly Hiperchannel was an emulated channel, and not a
channel extender.
HYPERChannel was a 50mbit/sec LAN with lots of various kinds of
[EMAIL PROTECTED] (R.S.) writes:
ESCON:
MM - 3km
SM - 20km
Typical value in sales leaflets is 43km which means XDF feature
(means Single Mode) in CPC - 20km - Escon Director - 20km -Escon
Director - 3km. The last distance had to be 3km (MM), because there
were no devices with
HYPERChannel
Hi,
Is there a stable 3179 terminal emulator available for a Windows/Unix PC
that would allow the emulation of Master/Nip Consoles connected to a 3174?
Thanks and cheers,
Charles MacNiven.
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