HP 3000 Manuals HP 3000 Manuals
Combined SLT and STORE Set by Pat Alvarez Commercial Systems Division Included with this release of MPE/iX are enhanced versions of the system generator (SYSGEN), STORE/RESTORE, and the TurboSTORE products. SYSGEN is used to create the MPE/iX system load tape (SLT) and STORE or TurboSTORE is used to put user files on another set of tapes. In the past, the SLT has always been separate from STORE file sets and required separate tapes. With these enhanced versions of SYSGEN, STORE/RESTORE, and the TurboSTORE products, you can now combine an SLT and any STORE fileset to make a combined SLT/STORE Set. These enhancements, along with the large capacity of the digital data storage (DDS) device, allow both the SLT and STORE file sets to fit on a single cassette. This feature allows you easily and more cost effectively to create and archive a system backup. In order to provide a combined SLT/STORE Set, SYSGEN and STORE were changed to allow the ability to STORE files after the SLT. The approach taken is similar to that used by MPE V. The MPE V SYSDUMP command can store user files after the coldload portion of the tape. These files can be retrieved either by a reload or a separate RESTORE. MPE/iX handles this process by storing the file set immediately after the SLT. The file set can be restored by skipping over the SLT prior to attempting to do the RESTORE. The way an SLT gets written out today will not change. SYSGEN needs to be invoked to create an SLT. Once this tape is written, it can be used to STORE and RESTORE files after the SLT image. This implementation is different from MPE V in that files cannot be restored during an INSTALL (same as MPE V RELOAD). The only way that the STORE files can be retrieved from the combined SLT/STORE Set is through the RESTORE command. For more details on combining the SLT and STORE file sets, refer to the related article in the "Technical Articles" section in this Communicator.