## Previously configured system 

If you are converting a system (configured and managed by using standard or traditional tools) to the use of DPM, you must check the configuration of the system and verify whether you must save any configuration data. This process helps you to decide whether you should revert to “traditional” management tools. 

## 16.1.3 Considerations for I/O features 

The following I/O and special purpose features are supported for configuration by using DPM: 

GLYPH<SM590000> OSA-Express features (all supported features) 

GLYPH<SM590000> FICON Express (all supported features): 

– Fibre Channel Protocol (SCSI) 

– FICON (ECKD) DASD 

GLYPH<SM590000> RoCE Express and RoCE Express2 features (as standard NIC, no SMC-R support) 

GLYPH<SM590000> IBM zEDC Express (used as an accelerator) 

GLYPH<SM590000> Crypto Express features (all supported features) 

Important:  Not all channel types are supported for these features. For more information about supported channel types, see the DPM documentation. 

The following features are not  supported when DPM is used to configure and manage your system: 

GLYPH<SM590000> Coupling features$^{3}$: 

–I C A  S R 

– Coupling Express Long Reach 

GLYPH<SM590000> zHyperLink Express 

Important:  Always consult with operating system support for the features’ functionality availability. 

## Internal features 

From the available internal capabilities of the z14 ZR1, HiperSockets are supported and configurable by using DPM. 4 

## Time synchronization 

If your environment requires time synchronization, the z14 ZR1 includes Server Time Protocol (STP) support. STP support is provided through FC 1021. 

STP allows the Z CPC to synchronize its time to an external time source (ETS). At Power On Reset, the CPC retrieves the Time Of Day (TOD) from the SE. Further on, the time of the CPC can be maintained in sync with an ETS by using the SE Network Time Protocol (NTP) client (with STP configured) and STP feature. 

