On Mon, 26 Jan 2015 21:33:05 +0100, R.S. wrote: >In z13 System Control Hubs (SCHs) replace the Bulk Power Hubs (BPHs) > >Question: what is SCH, and was is BPH?
As near as I can tell from http://www.redbooks.ibm.com/redpieces/pdfs/sg248251.pdf it is used for communication between the HMC and the various parts of the z13. <quote> 2.2.3 System control Various system elements are managed through the flexible service processors (FSPs). An FSP is based on the IBM PowerPC® microprocessor technology. Each FSP card has two ports to connects to two internal Ethernet LANs, through system control hubs (SCH1 and SCH2). The FSPs communicate with the SEs and provide a subsystem interface (SSI) for controlling components. Figure 2-10 on page 42 is a conceptual overview of the system control design. </quote> Figure 2-10 shows two customer-supplied Ethernet switches between the w HMCs and the two SCHs. > >As a user of BPH I would bet it is a kind of Ethernet switch. Is it >documented anywhere? >Are the defices user-configurable or accessible? I doubt it. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
