Filesystems are mounted under the following top-level directories:
| FILESYSTEM | DESCRIPTION | RAID? | Backup? | POLICIES |
| /srv/people | home directories for most CSB users | Yes | Yes (b1) | quotas enforced |
| /srv/local | application programs | Yes | Yes (b1) | |
| /srv/frames | temporary storage of raw and processed xray data during data processing | No | No (b3) | Maximum file lifetime 7 days |
| /srv/synchframes | temporary storage of synchrotron data while transferring to/from tape | No | No | Maximun file lifetime 2 days |
| /srv/temp | temprary storage of non-frames data | No | No (b3) | Max life 7 days |
| /data/raxisa | frames from RAXIS-A system | No | No | Max life ? days |
| /data/raxisb | frames from RAXIS-B system | No | No | Max life ? days |
| /data/macsci | frames from Macscience system | No | No | Max life ? days |
| /dbase/pdb | "clean" pdb files | No | (b5) | |
| /dbase/csd | Cambridge Structural Database | No | (b5) |
| FILESYSTEM | DESCRIPTION | RAID? | Backup? | POLICIES |
| /Net/atb | ATB group directories | No | (b4) | |
| /csb/jad/0 | Storage for JAD group | Yes | Yes (b2) | |
| /csb/jad/d3 | Storage for JAD group on JAD host | No | No (b3) | |
| /csb/pbm/0 | Storage for PBM group | Yes | Yes (b2) | |
| /csb/pbs/0 | storage for PBS group | Yes | Yes (b2) | |
| /csb/pbs/9 | storage for PBS group on PBS host | No | No (b3) | |
| /csb/tas/0 | Storage for TAS group | Yes | Yes (b2) | |
| /csb/tas/9 | Storage for TAS group on TAS host | No | No (b3) |
| FILESYSTEM | DESCRIPTION | RAID? | Backup? | POLICIES |
| /eve/mail | CSB mail spool | Yes | Yes (b1) | |
| /eve/backups | Daily incremental backups | Yes | No | |
| /eve/adm | Sysadm stuff -- Logs, accounting records and scripts | Yes | Yes (b6)? | |
| /eve/dist | Distributions of csb apps | No | Yes (b2)? | |
| /eve/www | www programs and content | Yes | Yes (b2) | |
| /eve/staff | staff work area | Yes | Yes (b1) | quotas |