HP NonStop G-Series - Manual (Page 139)

Command Interpreter
HP AutoSYNC User’s Guide—522580-020
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ALTER SYNCFILESET
specifies that any file that is in the destination file set but is not in the source
file set will be (or will not be) purged. By default AutoSYNC does not purge any
file in the destination file set.
To exclude files from being purged on the destination, use the
EXCLUDEPURGE option.
Guardian file sets:

If PURGE is specified, the subvolume portion of the source and destination
file sets must be fully qualified (no wild-card characters or "*").

Purging of files occurs on a subvolume by subvolume basis. A destination
file is not purged if it does not exist in a corresponding source subvolume,
unless the SUBVOLPURGE option is also specified.

Extra SQL objects in the destination like tables, views and indexes are
purged. Catalog files are not supported and they are not synchronized or
purged by Autosync.
Extra SQL tables and views are purged explicitly, indexes and secondary
partitions are purged implicitly, with the main table.

OSS system files named $*.ZYQ*.* are automatically excluded from being
purged on the destination system.

SYSDB and MapDB subvolumes are automatically excluded from
being purged on the destination subvolume.
OSS files and directories:

If PURGE is specified, subordinate directories not present in the source file
set are purged on the destination. Note that this is different than the
processing of Guardian subvolumes. Guardian subvolumes are not purged
unless SUBVOLPURGE is specified.
An entry is written into the log file for each file or OSS directory that is purged
as a result of the synchronization.
PURGE is not supported for SQL tables.
RATE percentage | NO RATE
the percentage of elapsed time the synchronization process should be active.
The default is 100%.
TO file-set
the destination the file set that is to be synchronized with the source file set.
The destination system may be specified as back slash asterisk (\*), which
means that the destination of the synchronization is every system that has
AutoSYNC installed, licensed, and running.