The Aspera Sync Database - IBM Aspera HST Admin Manual

Server setting
= create, follow
(default)
Client setting = Follow
follow
(default for ascp
and ascp4)
Client setting =
Copy
copy
(default for
async)
Client setting = Copy and replace
copy+force any existing files.
Client setting = Skip
skip
Server and Client Configuration
Server Configuration
To set symbolic link handling globally or per user, run the appropriate command:
# asconfigurator -x "set_node_data;symbolic_links,value"
# asconfigurator -x "set_user_data;user_name,username;symbolic_links,value"
For more information, see
Client Configuration
To specify symbolic link handling on the command line (with ascp, ascp4, or async), use --symbolic-
links=option.

The Aspera Sync Database

Each async session creates a database (snap.db) that is stored on both the local (client) computer and the remote
(server) computer. The database records the state of the file system at the end of the last async session, and the next
time the session is run, the file system is compared to the database to identify changes.
Aspera Sync Database Location and Structure
Aspera Sync creates private directories (.private-asp) to store the database and in-progress transfers (a transfer
cache for pending files).
The Aspera Sync database directory is stored on the local computer in the directory specified by the -b option
in the command line, and on the remote computer in the directory set for <async_db_dir> in the server's
aspera.conf (or set by the client with -B if no value is set on the server).
Note: The Aspera Sync database does not work on CIFS, NFS, or other mounted shared file systems; therefore, -B
and -b must specify a directory on a file system physically local to the endpoint host.
Multiple async sessions can synchronize the same directory or specify the same database directory (-b or -B), so
for each session async creates a subdirectory in .private-asp that is named with the session name specified by
-N. To allow the session name to be used as a directory name, names can only use standard alphanumeric characters
and "_" and "-" characters.
Server setting =
create
Skip
Copy
Copy and replace
any existing files.
Skip
aspera.conf - File System Configuration
Server setting = Server setting =
follow follow_wide
Follow Follow even
if the target is
outside the user's
docroot.
Copy Copy
Copy and replace Copy and replace
any existing files. any existing files.
Skip Skip
on page 63.
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Server setting =
none
Skip
Copy
Copy and replace
any existing files.
Skip