HP 1606 FICON Administrator's Guide v6.4.0 (53-1001771-01, June 2010) - Page 62

5 Configuration restoration in a FICON environment Firmware upgrade disruption Loading new firmware is a non-disruptive process except for the following: • During the firmware download process a failover to the backup processor occurs. Any outstanding CUP commands are lost and result in a time-out. To avoid this, CUP should be varied offline before starting a firmware download. The CUP may be varied back online after a successful firmware download. • On switches with IP ports, the Brocade 7500, or enterprise-class platforms with an FR4-18i blade, the IP port goes offline for 20 to 30 sec during a firmware download. Any path using these IP ports should be paused or set offline during the firmware download process. Remember that in many cases the paths using the IP ports are native Fibre Channel paths from disk or tape mirroring. Non-Disruptive firmware upload and download All systems maintain two partitions of nonvolatile storage areas, a primary and a secondary. Following is an overview of the firmware download process: 1. The firmware is downloaded to the secondary partition. 2. The current secondary and primary partitions are swapped. 3. The CP then reboots. In dual CP systems (Brocade 48000 and Brocade DCX enterprise-class platforms) the backup CP is rebooted with the new firmware and the HA failover is automatically invoked. 4. Once rebooted, the primary code image is copied to the secondary. Configuration restoration in a FICON environment If the switch is operating in a FICON CUP environment, and the ASM (Active=Saved) bit is set on, then the switch ignores the IPL file downloaded when you restore a configuration. Table 5 describes this behavior in more detail. TABLE 5 ASM bit Backup and restore in a FICON CUP environment Command Description on or off on off configUpload configDownload configDownload All the files saved in the file access facility are uploaded to the management workstation. A section in the uploaded configuration file labeled FICON_CUP is in an encoded format. Files saved on the switch that are also present in the FICON_CUP section of the configuration file are overwritten. Files in the FICON section of the configuration file that are not currently present on the switch are saved. The IPL file is replaced, because active=saved mode is on. A warning message is displayed in the syslog to warn that the IPL file is not being overwritten. Files saved on the switch that are also present in the FICON_CUP section of the configuration file are overwritten. Files in the FICON section of the configuration file that are not currently present on the switch are saved. The IPL file is not replaced, because active=saved mode is off. 50 FICON Administrator's Guide 53-1001771-01