Drive with High-Speed Transfer Server

Aspera High-Speed Transfer Server (HST Server) is the foundation under Drive transfers with Faspex and Shares, and under Drive transfers with AoC if your AoC uses an on-premises (tethered) transfer node. Therefore, in any of these cases, the configuration of your HST Server is fundamental to your Drive implementation.

For the most part, your HST Server does not need special configuration in order to work with Drive. You configure your HST Server for use with Drive in the same way as you would for use with Aspera on Cloud, Aspera Faspex, or Aspera Shares.

Setting Group Ownership

In some cases, you may want to control the permissions on files that are uploaded to a transfer server. To do this, you can set the SGID bit on the directory on the transfer server into which files are transferred.

The steps below set the SGID bit on a directory named limited. When the steps are complete, transfers to the limited directory will have group ownership rather than user ownership.

Note: The change in ownership applies to Drive transfers to this directory, and to files created in this directory on the transfer server itself, but does not apply to transfers performed through sync actions.

Set the transfer server to ignore group ownership.

$ asconfigurator -x "set_node_data;group_ownership,-"

Change the group associated with the limited directory to mygroup. The group named mygroup is not the user xfer's primary group.
```
$chgrp -R mygroup limited/
```
Set the SGID bit for the destination directory limited.
```
$chmod -R ug=rwx limited/
$chmod -R g+s limited/
```
Verify your changes.
```
$ ls -la limited/
drwxrwsr-x 1 root mygroup 1234 Apr 23 10:42 . 
```
Your output may vary, but ensure that the s is present in the group's permissions.