August 15, 2017
© Copyright IBM Corporation, 2017 Page 78 of 117
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The maximum number of reclaim set by the host library request (LIBRARY
REQ,distibname,SETTING,RECLAIM,RCLMMAX,x) is not applied the number of drives used by
Offsite Reclaim.
Once an hour, the TS7700 determines if any copy exported volumes that had been made eligible for reclaim
through the Library Request function have completed their reclaim processing. If reclaim processing for the
exported physical volume is completed successfully, an informational message is sent to all hosts attached
to the TS7700 or Grid indicating that an exported physical volume has been reclaimed and is empty. On
z/OS hosts, the message results in a console message being written in the following format:
CBR3750I Message from library
library-name
: R0000 RECLAIM SUCCESSFUL FOR EXPORTED
STACKED VOLUME YYYYYY
Note:
This message is only generated for Library Request initiated reclaims, reclaim of copy exported
volumes that were made eligible through normal pool policy do not result in this message
The next time a copy export operation is performed for the secondary physical volume pool, the newly
written physical volumes containing the reclaimed active logical volumes will be included in the operation.
The database backup on those newly exported volumes will have the latest logical to physical volume
mapping information and would show that the reclaimed copy exported volume no longer have any logical
volumes on them. The now empty copy exported volumes can be returned to the source TS7700 and re-
inserted for re-use as scratch volumes.
Normally, you would return the empty copy exported volumes to the library I/O station associated with their
source TS7700 and re-insert them. They would then be reused by that TS7700. If you want to move them to
another TS7700, keep two things in mind. First, you would need to ensure that the volser ranges you had
defined for that TS7700 matches the volsers of the physical volume(s) you want to move. And second, you
will need to tell that source TS7700 to stop managing those volumes. To do that, you would use the host
console request function, Library Request, specifying the keywords; COPYEXP,yyyyyy,DELETE, where
yyyyyy is the volser of the copy exported volume.
Note:
Prior to Release 1.7, a physical volume that is marked export-hold and left in the source TS7700
library will remain in export-hold even if it no longer has any active data on it. In order to have this volume
be returned to scratch for eventual re-use, it will need to be ejected and then re-inserted into I/O station.
Starting with Release 1.7, when an export-hold volume no longer has active data on it, it will automatically
be set to scratch for eventual re-use when next Copy Export starts.
