Transfer servers

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

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

Server Purpose Access requirements Further information
xfer1.jasmin.ac.uk Virtual machine for general purpose data transfers. jasmin-login Visible on optical network connections from  k9.leeds.ac.uk and some Met Office hosts.
xfer2.jasmin.ac.uk Virtual machine for general purpose data transfers. jasmin-login
xfer3.jasmin.ac.uk As per xfer[12], but with config like login2for enabling access from IP addresses without fwd/rev DNS lookup. jasmin-login AND xfer-sp Apply for additional access role access here.
See below for further specifics.
hpxfer1.jasmin.ac.uk Physical machine for high-performance data transfers. jasmin-login AND hpxfer
IP address of client 		Tuned for UK & European network paths. Apply for additional access role access here
hpxfer2.jasmin.ac.uk Physical machine for high-performance data transfers. jasmin-login AND hpxfer
IP address of client 		Tuned for long (intercontinental) network paths (e.g. UK - Australia). Apply for additional access role access here
gridftp1.jasmin.ac.uk Physical machine for high-performance GridFTP transfers. jasmin-login AND hpxfer
IP address of client
No SSH login access.   Apply for additional access role access here
Acts as Globus Online endpoint " JASMIN GridFTP Server"

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. Users with login accounts can  apply for access to use the high-performance servers.

PLEASE MAKE SURE YOU USE THE DEDICATED TRANSFER SERVERS AND NOT SCIENTIFIC ANALYSIS OR LOGIN SERVERS FOR ANY SIGNIFICANT DATA TRANSFERS. TRANSFER SERVERS HAVE BEEN CONFIGURED TO ACHIEVE THE BEST TRANSFER RATES AND WILL PERFORM SIGNIFICANTLY BETTER THAN OTHER SERVERS ON JASMIN, WHILE MAINTAINING THE PERFORMANCE OF ANALYSIS SERVERS FOR OTHER USERS.

Special transfer machine xfer3.jasmin.ac.uk

This machine has been set up to cater for those whose network configuration does not enable them to connect to xfer1 and xfer2 (for example because of a lack of fwd/rev DNS lookup). A different set of access rules apply, which enables users to access this machine but a side effect of these additional rules is that repeated attempts to access the machine via SSH-based processes 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. The "xfer-sp" access group is therefore a way of ensuring that the users accessing this machine know to be aware of this issue and can have their access to this machine denied if found to be causing a problem for the machine's operation for other users.

Note: Users are not permitted to execute commands which require administrative privileges. This applies to all hosts in the managed part of JASMIN where users have SSH login access (for example login, nx-login, sci, xfer and hpxfer machines). In other words, the use of  su or sudo is not permitted. Please be careful when typing commands, particularly if you have multiple terminal windows open on your own computer, that you do not accidentally attempt sudoon a JASMIN machine: expect some follow-up from the JASMIN team if you do!