the storage space on sto3 is based on ZFS, a volume-manager/filesystem original designed by Sun Microsystems, and only recently released as openSource. ZFS is well tested and a standard package on Ubuntu. You don't need expensive RAID controllers for ZFS, because RAID is natively included in ZFS. The ZFS pool is called data, and has the currently those datasets defined:
root@sto3:~# zfs list -r -o quota,mountpoint,sharenfs,sharesmb,compressratio data/home QUOTA MOUNTPOINT SHARENFS SHARESMB RATIO 10T /data/home on on 1.44x 500G /data/home/apresenti on on 5.82x 500G /data/home/ejanssens on on 1.01x 500G /data/home/jdbeen3 on on 1.02x 500G /data/home/jsanctorum2 on on 1.01x 1G /data/home/ugent on on 1.00x 1T /data/home/wels on on 1.20x 500G /data/home/xre on on 1.02x
For every user we create, we will also create a dataset for that user, /data/home/<username> . This new dataset will inherit most of the settings of /data/home, like sharenfs and sharesmb (sharing via nfs and sharing via samba). You can also specify quota for the new dataset.
We will provide an extra script for creating a user with all the correct settings. See User administration