On 03/29/2011 10:27 PM, Ravi Gaur wrote:
I have no idea why you got this requirement anyway it's a dfhsm recovery
scenario and look like needed help from ibm.you might be needed to enable
patches etc which are recommended by IBM...Like below manual does have some
dfhsm recovery scenario..
http://publib.boulder.ibm.com/infocenter/zos/v1r9/index.jsp?
topic=/com.ibm.zos.r9.idas200/hr1024.htm
On the other hand question goes did you try with the recover option from
backup since it's a ml2 there should be a backup copy created as well and
if so look in the above manual there's a way to recover dataset from the
dfdss backup...interesting question nevertheless.
This assumption about auto backups being a pre-requisite for ML2
residency seems to be a very common mis-perception about HSM. A backup
copy is a pre-requisite if and ONLY IF a data set belongs to a MGMTCLAS
that requires auto backup. If the MGMTCLAS does not require
auto-backup, it will happily migrate to ML2 with no backup in existence.
If you are in an environment with many, independent, potentially naive
users who never think of backing up anything, it might make sense to
have most datasets with a MGMTCLAS that requires HSM auto-backup.
If you are in a complex business environment with many interrelated
application areas and complicated relationships among many datasets, and
applications that run throughout the 24-hour day, an HSM asynchronous
auto-backup at an unpredicable point in the application cycles is almost
worthless. We have always fit more into the latter, and only have HSM
autobackup on a small percentage of datasets, mostly application
development libraries and some TSO user data sets, which generally would
not be in-flight during the several night hours HSM might be doing
auto-backup.
--
Joel C. Ewing, Fort Smith, AR jcew...@acm.org
Bentonville, AR jcew...@acm.org
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