-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU]
On Behalf Of Miklos Szigetvari
Sent: Thursday, March 07, 2013 4:34 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: [IBM-MAIN] Speed up DASD copy
Hi
The dfdss accepting haply the OPT(4) keyword, the copy time dropped from
10 minutes to abut 7 minutes.
The "real" copy will go from ESCON channels to FICON .
We have to do this only once, as "BusTech" gave up the support for zDASD .
Thank you
On 07.03.2013 12:37, David Devine wrote:
Hi Miklos,
I'm making the assumption that your are referring to dfdss.
The traditional way of speeding up dfdss (adrdssu) copy's (or dumps) is by
using the OPT keyword.
I believe the default is (3) which is 5 tracks read at at time.
OPT(1) 1 track OPT(2) 2 tracks OPT(3) 5 tracks and OPT(4) 15 tracks read at
at time.
If you are doing a full volume copy i expect your sysin should look
something like this:-
COPY FULL ALLX ALLDATA(*) IDY(TS0002) ODY(XX12C0) - COPYVOLID
PURGE
OPT(4)
or you may use INDD OUTDD for your volume selection
Other criteria to consider, region size on your jobcard or pgm; number of
available channels; whether you want to copy your disks when in use or not.
Using a product like softek's tdmf will allow for in flight disk copys.
If you don't ahve it, then dfdss should only be used for packs when not in
use.
With dfdss you need to cater for the volume ids on the source & target
volumes, so you may want to add steps to "clip" (ickdsf reformat) the source
volume before the dfdss copy and "clip" the target volume to the original
source name after the copy.
This will keep it isolated and stop inadvertant access to the original source
volume.
Good luck!
Dave
**********************************************************
************
*************************
Hi
We need to copy a large number of DASD volumes (from zDASD to
DS6800).
Any option to speed up?
Seems CONCURRENT is not supported by the zDASD.
Kind regards, / Mit freundlichen Grüßen Miklos Szigetvari
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions, send
email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
--
Kind regards, / Mit freundlichen Grüßen
Miklos Szigetvari
Research& Development
ISIS Papyrus Europe AG
Alter Wienerweg 12, A-2344 Maria Enzersdorf, Austria
T: +43(2236) 27551 333, F: +43(2236)21081
E-mail: miklos.szigetv...@isis-papyrus.com
Info: i...@isis-papyrus.com Hotline: +43-2236-27551-111 Visit our brand new
extended Website at www.isis-papyrus.com
---------------------------------------------------------------
This e-mail is only intended for the recipient and not legally binding.
Unauthorised use, publication, reproduction or disclosure of the content of
this e-mail is not permitted.
This email has been checked for known viruses, but ISIS Papyrus accepts no
responsibility for malicious or inappropriate content.
---------------------------------------------------------------
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions, send email to
lists...@listserv.ua.edu with the message: INFO IBM-MAIN
