Information about 4690 OS unique file distribution attributes
Information about 4690 OS unique file distribution attributes.
There are five 4690 file distribution types:
- Mirrored on close: Distributed only to the file server when a file is closed.
- Mirrored on update: Distributed only to the file server when a file is updated.
- Compound on close: Distributed to all controllers when a file is closed.
- Compound on update: Distributed to all controllers when a file is updated.
- Local: Local controller only (no distribution).
These file types are stored in the "Reserved bits" portion of the PC-DOS file directory structure. This means that only 4690 respects and preserves these attributes.
Various non-4690 operating systems take different actions if these bits are turned on in a file's directory entry when copying from a diskette created on a 4690 system. For example, PC-DOS and Windows 2000 Professional will copy the file without error and zero the bits. OS/2 Version 1.2, on the other hand, will refuse to copy the file unless you first run CHKDSK /F on the file. After you run CHKDSK, it will copy the file and zero the bits. In all cases, when you copy the file back to the 4690 system, the distribution attributes will have been lost and the file will copy as a local file.
ADXCSU1L, a utility that saves the distribution attributes of files, helps you preserve these attributes when copying files to and from a 4690 system. This utility can also be used to restore these saved attributes after copying files back onto a 4690 system. For information about using this utility, type ADXCSU1L on the command line.
Information about the ADXCSU1L command is also available in the 4690 OS User's Guide.