13a7bda83SDave JiangWhat: /sys/class/scsi_host/hostX/isci_id 23a7bda83SDave JiangDate: June 2011 33a7bda83SDave JiangContact: Dave Jiang <dave.jiang@intel.com> 43a7bda83SDave JiangDescription: 53a7bda83SDave Jiang This file contains the enumerated host ID for the Intel 63a7bda83SDave Jiang SCU controller. The Intel(R) C600 Series Chipset SATA/SAS 73a7bda83SDave Jiang Storage Control Unit embeds up to two 4-port controllers in 83a7bda83SDave Jiang a single PCI device. The controllers are enumerated in order 93a7bda83SDave Jiang which usually means the lowest number scsi_host corresponds 103a7bda83SDave Jiang with the first controller, but this association is not 113a7bda83SDave Jiang guaranteed. The 'isci_id' attribute unambiguously identifies 123a7bda83SDave Jiang the controller index: '0' for the first controller, 133a7bda83SDave Jiang '1' for the second. 14