Ada:Filesystems and Files
File Systems, Quotas and File Transfers
Global file space on Ada is available on all compute, login, and extra-fast data transfer nodes. It is organized in the three file systems showing in the table below. Access to the allocated file space is through the indicated directories that are setup automatically for every user.
|File System||Directory||Environment Variable||Storage Hardware||File Space Quota||File Counts Quota||Comments|
|Home||/home/$USER||$HOME||GSS26||10 GB||10000||Upon login, you will be situated in /home/$USER. The use of this area is for small-to-modest amount of processing. Its space and file count limits are not extensible. This area is backed up on a nightly basis.|
|Scratch||/scratch/user/$USER||$SCRATCH||GSS26||1 TB||250000||This is a high performance storage, intended to temporarily hold rather large files, and only for on-going processing that uses them. It is NOT backed up nor is it intended as long-term storage area. Please delete or move out of these area any files that are not frequently used.|
|Tiered||/tiered/user/$USER||$ARCHIVE||GSS26||10 TB||50000||This is an archival file system intended to hold valuable data files that are not frequently used. Please delete or move elsewhere files that have been inactive for extended periods. Quotas will be in place, but space allocation is extensible upon justification and availability. /tiered is not accessible from the compute nodes.|
Quotas & File Use: the showquota command
A user can run the showquota home-wrapper command to display file use on Ada. Future versions of the command will include use of the tiered file system. Below is a sample output of command showquota.
$ showquota Your current disk quotas are: Disk Disk Usage Limit File Usage Limit /home 195.6M 10G 146 10000 /scratch 719.3G 1T 2898 50000 /tiered 114.9G 10T 44 50000
Data transfer utilites scp, sftp, and rsync are available Ada login nodes and fast data transfer nodes. Two Ada login nodes (ada1.tamu.edu and ada2.tamu.edu) have 10 Gbps Ethernet connection to the intra-campus network, the remaining Ada login nodes have 1 Gigbit Ethernet connection to the intra-campus network. These are suitable for small-to-medium sized data transfers. For massive data transfer, use Globus Connect or GridFTP on the fast data transfer nodes: ada-ftn1.tamu.edu and ada-ftn2.tamu.edu to utilize 40 Gigabit Ethernet connection to Internet2.
For transferring files on Ada to/from a Windows machine, please use WinSCP.
See file transfer software comparison wiki page for more options.