MERLIN LEGEND Communications System Release 6.1
System Programming and Maintenance (SPM)
555-661-140
Issue 1
August 1998
Programming with SPM
Page 34
Using SPM
Note that the communication system release number, not the version
number of SPM, reflects whether the backup file is compressed or
uncompressed. Release 1.0 backups are uncompressed and Release
1.1 and later backups are compressed. Uncompressed files take longer
to restore.
Considerations
Review the following items before you begin the backup procedure:
■ The communications system does not have to be idle during
backup; however, extension programming is blocked.
■ Any objects that are in a maintenance-busy state are stored in that
state. When you restore system programming, these objects are
busied out, even if they have since been released from the
maintenance-busy state.
■ If you plan to store your backup file on a diskette, format a DOS
diskette. (DOS formatting can be done on either a UNIX System
PC or a DOS PC).
■ Uncompressed backup files are 100,000 to 210,000 bytes in size;
compressed files are about 70,000 to 85,000 bytes.
■ Maintenance data (error logs and other data used by qualified
service technicians) is not saved in the backup file.
Follow the steps below to perform the backup procedure.
!At the SPM Main Menu, press
to select
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