ASA Database Administration Guide
File Locations and Installation Settings
Environment variables
SQLREMOTE=path
The SQLREMOTE environment variable is optional, and is not set by the installation program.
Addresses for the FILE message link in SQL Remote are subdirectories of the SQLREMOTE environment variable. This variable should point to a shared directory.
On 32-bit Windows operating systems, an alternative to setting the SQLREMOTE environment variable is to set the SQL Remote\Directory registry entry to the proper root directory.