Hard disks and pubsets can be set up that allow files larger than 32 Gbyte (referred to as “large files”). These “large files” are supported by ARCHIVE.
ARCHIVE supports large files in as compatible a form as possible, without extensions to the user interface. Large files are ignored with failure messages in RESTORE if they cannot be restored. Large files are ignored when duplication of save versions is carried out for BS2000/OSD-BC < V5.0.
Files are saved as “small” or “large” files, according to their actual size, regardless of the size of the hard disk.
The term used here for large files is independent of the LARGE operand in the CHANGE parameter of the SAVE statement. “tape”
Restriction on amount of volumes when saving a large file
Currently one BS2000 file can only be spread on about 300 volumes maximum within ARCHIVE/HSMS because of the restriction of directory record length. The value can differ depending on save options, for example, when SAVE-PLAM-INFO = *YES the value decreases to about 294 volumes. In case storing the file has required more volumes during save runs of ARCHIVE/HSMS, it is impossible to write the full information on the saved file into the concerned directory. This can happen when an extremely large file (more than 3TB) is written on logical volumes up to a size of 2 GB. Such requests will terminate as "COMPLETED WITH ERRORS" with issuing ARC0176 message into the report.
In order to avoid such information inconsistency in directories it is recommended to use more capacitive volumes (more than 2GB) during saving an extremely large file.