Problem Description ------------------- APAR IY99799 resolves a problem with some fibre channel attached storage subsystems that can result in failure to open the storage or varyon volume groups. Prerequisites ------------- APAR IY99799 applies to AIX 5.3 with the 5300-06 Technology Level and Service Pack 1. To determine if the required level is installed, use the command: oslevel -s The output should indicate "5300-06-01". Installation ------------ - Download IY99799.tar in binary format to an empty directory on the target system, and use the following command to extract the files. tar -xvf IY99799.tar - Install the updates by running the command 'smitty update_all' as root, specifying the directory in which you unpacked the files in the previous step as the "INPUT device / directory for software" field. - You must reboot the system for the updates to take effect.