HP 3000s are exchanging files with other servers, a process that's included the FTP protocol for more than 15 years. This capability was once so magic that the arrival of Samba file exchange on MPE/iX was lauded as a breakthrough. FTP is quite a ways off the most current of transfer protocols. One manager's started a discussion about how to improve transfer speeds to and from the 3000, though. He's using DSCOPY as well, but prefers the PUTs and GETs of FTP.
The advice that's current about FTP/iX says that hard-coding the 3000's ports (100mb full duplex, or 10mb half) is one way to speed things up. Ensuring your traffic is not running through a proxy (called "being proxied) is another idea. Measuring the speed of a PUT against a GET is one step in discovering why the 3000's FTP might seem slow.
In 2008, MPE/iX gained a secure version of FTP—at least part of one. This SFTP functionality arrived at the end of the Hewlett-Packard lab era for 3000s, a period when new tools were not being placed into wide use. Sites were locking down their 3000 scope of operations to ensure stability. The port of this then-current functionality fell short of complete: only an FTP secured client got created. PUTs could be secured, as well as GETs. But only from Windows, Unix, or Linux hosts to the 3000. The 3000 wasn't going to dish out files using secured FTP. There are notes in place to carry the work forward, though.
MPE/iX tools and components are also out there to complete this securing of file transfers. OpenSSH is the best-known protocol. A quick-start bundle can be downloaded from the MPE-OpenSource website run by Applied Technologies. There are SFTP installation instructions at Applied, too. Someone who's got a need for securing FTP transfers will need to do the server side of the porting, which was completed on the client side by Ken Hirsh, Mark Bixby, and Mark Klein. Requests to speed up FTP are a sign this porting would be more than just an open source hobby project.