Thanks to all of you who responded. The answer turns out to be a fact not in
evidence in my original question.
System A is in LPAR mode; single partition, but LPAR nonetheless.
As such, according to GRS and IOS Level2, The CNC channel described below
must be dedicated, not shared.
You start an instant copy of your drives at 03.00.00 AM .
One second later at 03:00.01 all your source drives are destroyed by some alien
high power laser beam !
The instant technologies we are speaking of all work within a single
disk subsystem, copying from one logical disk to another.
In a message dated 3/12/2006 12:19:13 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
It would have to be a very precise alien laser beam.
Murphy is an awfully good shot! Spent many hours recovering disk failures in
dual copy/PPRC where the primary failed during the process.
I've seen next to no activity on this list since yesterday evening.
-
-teD
I’m an enthusiastic proselytiser of the universal panacea I believe in!
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On Sun, 12 Mar 2006 13:18:54 -0500, Bruce Black [EMAIL PROTECTED]
wrote:
The instant technologies we are speaking of all work within a single
disk subsystem, copying from one logical disk to another. Your scenario
of the source disks being put out of commission while the target disks
are still
This Murphy has resources at his disposal you can't believe
And, on the 8th day God said: OK, Murphy. You take over!
-
-teD
I’m an enthusiastic proselytiser of the universal panacea I believe in!
--
For IBM-MAIN subscribe /
Ed,
That's a straw man! How many decades has it been since anyone made a box
with Dual Copy?
We are talking about instant split capabilities of In system replication -
Shadowimage, Flashcopy, Timefinder and Snapshot.
We are not talking about alien laser beams - we are talking Disaster
Tolerant
Well get it right
Ed, I have made this comment before!
Things have changed since you retired!
Some things you may have right.
But, in general, the world has moved on.
Array technology has improved.
Copy services have improved.
LE/COBOL has improved.
Either keep up with the technology, or sound
D SMF shows what is current (ACTIVE) SYS1.MANx dataset.
I'd like to get the information in my program. Can I find it in CVT or
other control block ?
--
Radoslaw Skorupka
Lodz, Poland
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In a message dated 3/12/2006 3:13:24 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
Instead of talking about alien laser beams, do your homework with MTBF and
MTTR (sparing time) to figure out those probabilities.
Think you're missing the point again.
Ted MacNEIL wrote:
I don't claim to speak for Ted, but I took his comments as being along
the lines of what I mentioned earlier - that the tasks of setting up the
environment after the snaps are done isn't an immediate thing.
Exactly.
As I said, How soon can I use the snap'd data?
That is
[EMAIL PROTECTED] wrote:
In a message dated 3/12/2006 12:19:13 P.M. Central Standard Time,
[EMAIL PROTECTED] writes:
It would have to be a very precise alien laser beam.
Murphy is an awfully good shot! Spent many hours recovering disk failures in
dual copy/PPRC where the primary
suspend
DB2 updates and some other update activities during the establishment
process to be sure that you have consistent volume backups that will
actually be usable for a Disaster Recovery.
Not if you are also copying journals.
In-flights are handled by that.
-
-teD
I’m an enthusiastic
Ed,
I really don't see your point - do I need a secret decoder ring or
something? The website you sent is talking about DR - we are talking about
IN SYSTEM REPLICATION!!!
Is an instant backup copy instant - well if you can use it instantly it must
be.
Will the pointer based copy survive a disk
Joel,
If you are using At-Time split with Shadowimage then you don't have to do
anything from the Host side except tell the Storage Controller(s) what time
the Point in Time should be. It is instant and consistent.
If you're splitting Shadowimage Volumes using the archaic PPRC commands then
the
Found this in a Google cache:
From the SMCA map, can we find the name of the SMF datasets which one is
active? I am trying
to find the information displayed by 'D SMF' command thru REXX. The SMCAFRDS
field points to
smf dataset but i could not find out the format(map) after jumping to
Ted,
At The last place I worked they were mirroring 160+ volumes of work.
I did not design it but I sure as hell wouldn't have sent the data
line to NY via Denver (we were in Chicago).
The discrepancy I am (and have had others confirm it on here)
concerned about that there is some time
I believe ins in the SMCA which IIRC is off the CVT.
Ed
On Mar 12, 2006, at 3:43 PM, R.S. wrote:
D SMF shows what is current (ACTIVE) SYS1.MANx dataset.
I'd like to get the information in my program. Can I find it in CVT
or other control block ?
--
Radoslaw Skorupka
Lodz, Poland
Ted, I don't think you're right about this.
Copying the DB2 archive log journal volumes doesn't prevent the problem
if the tables and journals are on separate volumes and the volume copies
are done by any process that is not exactly time-synchronized across all
volumes. If the copies are
James Chappell wrote:
Hopefully someone can point me in the right direction
I'm look for a copy of IMS/VS Low-Level Code/Continuity Check DL/I
OS/VS Program Reference and Operations Manual
The last manual number that I can find for LLC/CC was SH20-9047
Jim Chappell
503 745-7841
503
Not to speak for Mike, but as Mike said in his previous email the ability to
have generic rules protect individual datasets in place of discrete rules is
fine as long as you have a tape management system (any tape management
system). To take that one step further however, I would also say as long
This REXX extract will do the job.
SYS1.SYSA.SMFDS1 SPASM1 100020 95122 Active95%
SYS1.SYSA.SMFDS2 SPASM2 100020 1 Alternate 0%
SYS1.SYSA.SMFDS3 SPASM3 100020 1 Alternate 0%
SYS1.SYSA.SMFDS4 SPASM4 100020 1 Alternate 0%
SYS1.SYSA.SMFDS5 SPASM5 100020 1
Hello Ed,
as you said, with some HCD work you can get the CTC shared in an LPAR
environment.
The Control Units have to be defined with CUADD=target lpar number.
And it is good to define the CTC devices with explicit partition lists, so
that a target lpar device is not accessible on that lpar.
Ed
Ted,
At The last place I worked they were mirroring 160+ volumes of work.
I did not design it but I sure as hell wouldn't have sent the data
line to NY via Denver (we were in Chicago).
Well that would be Remote Copy Ed, and not In System Replication. No-one is
disputing that Copying
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