Transfer servers

This article lists the JASMIN data transfer servers and provides links to how they can be used.

Please see further articles in the Data Transfer category for details on managing your data transfers.

The standard transfer servers provide a basic and functional service for moving small amounts of data over relatively short distances. However, the high-performance data transfer servers shown above are also available for those with particular requirements.

JASMIN provides specific servers for managing data transfers. These are:

xfer servers  

Notes:

• Similar config on all 3 (no domain or reverse DNS restrictions now)
• Same advice applies re. SSH client version, see login nodes
• If using cron on xfer-vm-03, you must use crontamer
• Throttle any automated transfers to avoid many SSH connections in quick succession, otherwise you may get blocked.
• Consider using Globus for any data transfer in or out of JASMIN
• A new software collection jasmin-xfer has now been added to these servers, providing these tools:

emacs-nox
ftp
lftp
parallel
python3-requests
python3.11
python3.11-requests
rclone
rsync
s3cmd
screen
xterm

hpxfer servers  

Notes:

• Tested with sshftp (GridFTP over SSH) from ARCHER2
• Same applies re. SSH client version, see login nodes
• The software collection jasmin-xfer available as per xfer servers, above
• The hpxfer role, and the supplying of client IP addresses is no longer required for these new servers.

Avoid getting locked out with SSH transfers  

Access rules in place to enable secure SSH connections from any network are sensitive to repeated, rapid connection attempts, which can result in being “locked out”. This may happen when attempting the transfer of several small files in quick succession with separate SSH connections for each. All the above servers behave the same way in this respect, so please be aware of this when managing your transfers.

GridFTP server  

For users of the (now legacy), certificate-based GridFTP only (specifically, gsiftp:// using the globus-url-copy client), there is a new server:

Users of this service are now strongly advised to migrate to using Globus instead.