HP 3000 Manuals HP 3000 Manuals
Chapter 10 Standalone Analysis Tool (SAT) The Standalone Analysis Tool (SAT) aids support and lab personnel in analyzing MPE XL system events such as process hangs, operating system failures, and hardware failures. SAT is implemented as a standalone image that is bootable from ISL. This implementation makes it possible to analyze system failures as soon as they occur without taking a dump. Being a bootable utility, SAT runs in the area or memory saved by MMSAVE during the boot from the primary boot path. SAT directly accesses main memory, the memory save area on LDEV 1 and virtual storage on the system LDEVs. Like DAT, SAT requires that the data structures involved in virtual address translation be intact in order to support virtual addressing. SAT provides the support personnel with the capability to quickly analyze a failure without going through the dump process. If it is determined that a dump is still necessary, exiting to ISL allows the user to invoke DUMP or any other bootable utility. The main memory contents and the data on disk are not altered by the SAT.