8456ch_ConfigGUI.fm Draft Document for Review December 5, 2019 4:33 pm For more information about Easy Tier settings, see  IBM DS8000 Easy Tier (for DS8000  R9.0) , REDP-4667. zHyperLink is a short-distance link technology intended to complement FICON technology to  accelerate I/O requests that are typically used for transaction processing. It consists of  point-to-point connections for random reads and writes providing up to 10 times lower latency  than High Performance FICON (zHPF). You can set it to  Enabled ,  I/O Read Enabled ,  I/O  Write Enabled , or  Disabled , as shown in Figure 11-28. zHyperLink Date and Time 288  IBM DS8900F Architecture and Implementation Figure 11-29 Date and Time Settings Figure 11-28 zHyperLink Settings  Note:  To take advantage of zHyperLink in DS8000, ensure that CUIR support (under  IBM Z) is enabled. For more information, see  Getting Started with IBM zHyperLink for z/OS , REDP-5493. You can enter the date and time manually, or specify an external Network Time Protocol  (NTP) server to provide the date and time. See Figure 11-29.