NERSCPowering Scientific Discovery Since 1974

HPSS Outage Tue Mar 19 - Fri Mar 22

March 12, 2013 by Francesca Verdier

The NERSC HPSS "User" system ( will be down for four days from Tue Mar 19 07:00 to Fri Mar 22 17:00).  The system will be upgraded from HPSS version 6.2 to version 7.3.

This new version of the HPSS server software is not compatible with current GridFTP servers.  This means the NERSC HPSS systems will not support any grid-based transfer methods (including GlobusOnline) following the upgrade.  We expect to install a fix for this problem during a scheduled downtime by the end of April.

This is a major upgrade that will require users of the HPSS User system to switch to new versions of the HPSS client software tools hsi and htar.  Note that if you use a "regular" ftp client, your current client will work with the new version of the HPSS server software.

If you access the User system with hsi and/or htar on NERSC-supported computational systems (Hopper, Carver, Genepool, etc), new versions of the clients will be installed during the outage.  No action is required by users.

However, if you run hsi and/or htar on a non-NERSC system, you will need to acquire new clients.  New clients will be available on Thursday, March 21, at 08:00 on this webpage: