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GLYPH<SM590000> Integrated 3270 console security and performance enhancements 

On HMC 2.15.0, the internal framework was reworked; therefore, performance for integrated 3270 console is improved. Also, RACF security checking is required based on user logon. 

Note:  Consider the following points: 

GLYPH<SM590000> Starting with HMC Version 2.15.0, zBX is no longer supported. 

GLYPH<SM590000> With HMC/SE Driver 41, the Sysplex Time task was removed from the SE; as such, an HMC version 2.15.0 is required to manage STP on a z15 CPC. 

GLYPH<SM590000> HMC 2.15.0 supports managing N-2 generation CPCs only (z15, z14 ZR1, z14, z13s, and z13). 

GLYPH<SM590000> The DVD drives for the z15 hardware are no longer available on the new build HMC or the SE. 

## 10.2.2 New Rack-mounted HMC and Tower HMC 

Feature code (FC) 0063 provides rack-mounted HMC, and FC 0062 provides the tower version of the stand-alone HMC. 

The HMC FC0063 (2461-SE3) is a 1U server that can be ordered with an optional IBM 1U rack-mounted tray that features a monitor and a keyboard/pointing device (KMM FC 0154). The HMC system unit and the KMM tray must be rack-mounted in two adjacent 1U locations in the “ergonomic zone” between 21U and 26U in a standard 19-inch rack. 

The rack-mounted HMC can be installed in a customer-provided rack (it cannot be mounted in the z15 CPC frames). Three C13 power receptacles are required: two for the system unit and one for the display and keyboard, as shown in Figure 10-5. 

<img src='content_image/1012649.jpg'>

