IBM zEnterprise Data  Compression Express F This appendix briefly describes the optional IBM zEnterprise Data Compression (zEDC)  Express feature of the z14, z13, z13s, zEC12, and IBM zBC12 servers.  This appendix includes the following topics: GLYPH<SM590000> F.1, “Overview” on page 512 GLYPH<SM590000> F.2, “zEDC Express” on page 512 GLYPH<SM590000> F.3, “Software support” on page 513 511 ' Copyright IBM Corp. 2017. All rights reserved.