Combined SLT and Store Set

MPE/iX allows you to combine an SLT and any store filesets to make a combined SLT/Store set. This is recommended for DDS devices primarily whose large capacity allows both the SLT and store filesets to fit on a single cassette.

In a combined SLT/Store set, the files are stored after the SLT. These files can be retrieved either by a reload or a separate RESTORE command which will skip over the SLT.

In order to create a combined SLT/Store set backup, SYSGEN needs to be invoked. The option STORE is added to the TAPE command inside SYSGEN. The TAPE command looks as follows:

   sysgen>  help TAPE 

   tape (ta) [mode  = VERBOSE|NOCHANGE|NOCONFIG|NODIAG|

                      NOLOGNUM|LOGNUM]

             [dest  = OFFLINE]

             [store = filesetlist string]

When the STORE option is used, files will be stored after the SLT as specified through the filesetlist string. The filesetlist string parameter is the same as the filesetlist parameter that is specified when using the STORE command. The only difference is that it specifies a set of files to be stored after an SLT as opposed to just a normal backup.

An example of how to use the STORE option is as follows:

   sysgen> TA STORE = "@.pub.sys"

or

   sysgen> TA STORE = " "

If the STORE option is used without specifying a filesetlist (2nd example), which is the same as invoking the STORE command without a filesetlist, the files that are stored will depend on the user capabilities. Since the parameter to the STORE option is a string, it must be enclosed by quotes.

If you want to specify other STORE options like SHOW, PROGRESS etc., they can be specified through the use of an indirect file:

   sysgen> TA STORE = "indirectfile"

where "indirectfile" might contain:

   @.@.@.;SHOW;PROGRESS=1

STORE options TRANSPORT, STORESET and MOSET (TurboSTORE) are invalid when a combined SLT/Store set is being created. If the store results in an error, the normal STORE errors will be displayed, and the user will be left in SYSGEN.

Storing files after the SLT will not work for a remote device. The use of the TAPE command to store files is not backward compatible (prior to 3.1).

When a single reel combined SLT/Store set is used to restore files, RESTORE will skip past the SLT set automatically prior to restoring files. In a multi-reel backup, if one of the reels that contain SLT information is mounted, RESTORE will skip past the SLT beginning with that reel, that is, reel one does not have to be mounted first in order for the RESTORE to work.