phbytewrite 0 recmoreads 0 sfiletrkreads 0 contamwrts 0 PPRCtrks 0 NVSspallo 0 timephread 90 timephwrite 0 byteread 0 bytewrit 0 timeread 0 timewrite 0 zHPFRead 0 zHPFWrite 0 zHPFPrefetchReq 0 zHPFPrefetchHit 0 GMCollisionsSidefileCount 0 GMCollisionsSendSyncCount 0 

Example 12-72 shows an example of the output of the showrank  command. This command generates two types of reports. One report displays the detailed properties of a specified rank, and the other report displays the performance metrics of a specified rank by using the -metrics  parameter. 

dscli> showrank -metrics R0 ID R0 Date 10/10/2019 14:32:46 CEST byteread 8175947 bytewrit 29508105 Reads 17783022 Writes 17946281 timeread 1105024 timewrite 19434052 dataencrypted yes timeload 8206273 dscli> 

Example 12-73 shows an example of the showioport  command. This command shows the properties of a specified I/O port and the performance metrics by using the -metrics parameter. Monitoring the I/O ports is one of the most important tasks of the system administrator. The I/O port is where the HBAs, SAN, and DS8900F exchange information. If one of these components has problems because of hardware or configuration issues, all of the other components are affected. 

dscli> showioport -metrics I0032 ID I0032 Date 10/12/2019 09:33:38 CEST byteread (FICON/ESCON) 0 bytewrit (FICON/ESCON) 0 Reads (FICON/ESCON) 0 Writes (FICON/ESCON) 0 timeread (FICON/ESCON) 0 

