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http://www-01.ibm.com/support/docview.wss?uid=swg1PK73041
EAV (Extended Address Volume) support for High Performance Pointer Checker. EAV is a DASD storage that has 65,521 or larger cylinders supported by z/OS 1.10.
https://www.ibm.com/support/knowledgecenter/en/SSFGBN_5.2.0/com.ibm.help.cdzos.eav.doc/ZOS_zOS_Support_of_EAV.html
Datasets on EAV. z/OS support for EAV was introduced in release 1.10 (DS8000 Release 4.0 Licensed Internal Code is also required). A DS8700 can define CKD volumes with up to 262,668 cylinders (~223 GB) and a DS8800 can define 1,182,006 cylinders (~1 TB) per volume.
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.idad400/eav.htm
This is the base addressing space on an extended address volume. A multi-cylinder unit is a fixed unit of disk space that is larger than a cylinder. Currently, on an EAV, a multicylinder unit is 21 cylinders and the number of the first cylinder in each multi-cylinder unit is a multiple of 21.
http://www-01.ibm.com/support/docview.wss?uid=isg1VM65945
The CMS support for EAV minidisks consists of updating the MAPMDISK mapping services and the DIRMAP command to tolerate minidisks defined at or above 65520 cylinders. The changes consist of 1. CP does not support MAPMDISK IDENTIFY for an EAV minidisk that is defined at or above 65520 cylinders on a DASD volume.
http://www.redbooks.ibm.com/abstracts/sg247617.html
This IBM® Redbooks® publication provides a summary of the functions and enhancements in z/OS V1R9 DFSMS. It then provides an in-depth technical description of the functions and enhancements in z/OS V1R10 DFSMS. ... Initially EAV is planned to support up to 262,668 cylinders (up to 223 GB of addressable storage) per volume, allowing you to ...
http://www.redbooks.ibm.com/redpapers/pdfs/redp5364.pdf
ibm director of licensing, ibm corporation, north castle drive, md-nc119, armonk, ny 10504-1785, us international business machines corporation provides this publication “as is” without warranty of any kind, either express or implied, including, but not limited to, the implied warranties of non-infringement, merchantability or fitness for a
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