HP Integrity NonStop J-Series - Manual (Page 51)

One-time Synchronization
HP AutoSYNC User’s Guide—522580-018
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Making Exact Copies
Making Exact Copies
By default, AutoSYNC does not synchronize a file if the destination file was modified
more recently than the source file. This behavior allows you to customize the
destination file for local use.
When AutoSYNC synchronizes a file, the two files are exactly the same, including the
modification time stamp. If you specify the TIMEEXACT option, all files that are not
exactly the same will be synchronized, overwriting any destination files you have
modified.
Excluding ZZ Files
Files that begin with the characters ZZ are usually temporary files that were
abandoned, or saveabend files created by Inspect. If you want to synchronize such
files, specify the ZZINCLUDE option.
System swap files are also considered temporary and they are not synchronized.
Excluding Specific Files
You may create an edit file containing a list of volume, subvolume, and file names or
patterns to be excluded from the source file set. Exclusion does not apply to the
destination file set. To preserve efficiency when exclude lists are large, patterns are
limited to trailing asterisks only.
Excluding a volume or subvolume will eliminate all processing for that entity, including
purging of extra destination files. Excluding a file does not prevent a destination file
from being purged if the corresponding source file does not exist and the PURGE
option is specified.
Purging Extra Destination Files
Specify the PURGE option to purge all destination files that do not exist in the source.
To create an exact duplicate of a source file set, this option is required to eliminate
extra files in the destination file set.
By default, the purge operation only applies to subvolumes that have files in the source
file set. Thus, if the synchronization is from $DATA.*.* to $BACKUP.*.*, a subvolume on
$BACKUP is not purged if no corresponding subvolume files exist on $DATA. To purge
extra subvolumes, specify the SUBVOLPURGE option in addition to the PURGE
option, as described in the paragraph
Purging Extra Subvolumes in the Destination File
Set below.
PURGE also applies to patterns such as $DATA.MYSUB*.SRV*. For each source
subvolume that has files that match the pattern, AutoSYNC purges extra destination
files that match the source file set pattern.
Caution. Some performance degradation could occur if an exclude file containing a
long list of files is shared by multiple syncfilesets.