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Storage Options (iLab/Grad)

Disk space on Computer Science iLab and Graduate machines

Home Directories

Home directories are located on the LCSR NetApp file storage device. Currenlty all iLab machines share the same home directory storage accessible at /ilab/users. Similarly, all Graduate machines share the same home directory storage accessible at /grad/users. These directories are backed up and lost files are recoverable under our restore service level. (Essentially, we keep backups for up to two months and have a fall back position in case of hardware failure.)

Accounts are given home directory quota limits in order to share this resource. Should you find your initial quota too small, you can request additional space (please give an estimate of how much more you need, how long you believe you will need it and a short jutification of what you need it for) in an email to "". (Our guideline for max quotas is 5GB for faculty, 3GB for students.)

Should you need additional large amounts of space, there are several options:

  • Local Filesystems

    Most machines have some extra disk space set aside in a partition called /freespace/local. You should note that these filesystems restrictions below.

    • Files are not backed up
    • Files are not counted toward your disk quota
    • Files in /freespace/local are automatically deleted when machines are re-installed without prior warning.
    • All files are removed between end and start of a semester without prior warning.

    Please be a "good citizen" in your usage of these filesystems. Don't fill them up or leave large amounts of data there for long periods of time. For more information.

    There is also the standard directory /tmp on each machine. These directories are normally of a limited size and are not backed up. Files left on this filesystem longer than seven days will be automatically deleted.

    Personal USB Storage Devices
    Logging into the GNOME Desktop Environment should allow USB storage devices to appear and become accessible automatically on your desktop after plugging in the device. Please make sure to "unmount" the volume before logging out or disconnecting the device. For more assistance, email

  • Computer Science Remote Filesystems

    Filer Tmp
    LCSR has a raided (so any single disk failure will not cause data loss) filer with about 3 TB space available on it from the iLab and Graduate machines at /filer/tmp2. Like the local filesystems, this space is not backed up. Usage on the filer is a matter of public record. All files on this space are deleted twice a year. Notices are set to {username} More details on the filer are contained in a warning file in the root of each filesystem called README.this-filesystem-is-not-backed-up.

    The local freespace directories mentioned above are remotely accessible via the directory path /freespace/{hostname} to access the /freespace/local directory on the machine {hostname}For more information.

    Project space on our NetApp
    Larger amounts of space can be arranged for on our NetApp for individuals or groups needing backed up space. This space is generally subject to the same restore policy that our home directories on the NetApp are. (Essentially, we keep backups for up to two months and have a fall back position in case of hardware failure.) This space must be requested by the DCS faculty member working on the project. For details, see our page on project disk space.

    Purchase additional capacity for our NetApp 
    Home directory and project space are allocated from space provided by LCSR on our NetApp. If you need much larger space, you could actually purchase more capacity for our NetApp. The last time we estimated the cost, it ran about $15k for 1.4TB of user space, $21k for 4.2TB, up to $25k for 6TB. If you're interested in this, send an email to help@cs and we can get some quotes.

  • External Remote Filesystems

    LCSR now supports WebDAV access to many of our filesystems. If you like, you can register your disk space with our WebDAV server and access it using our deparmental credentials. You can read about our WebDAV service at https:/ To arrange for registration of your filesystem, send an email to help@cs.

    LCSR now supports sshfs access via FUSE to access any filesystems on remote machines loginable via SSH. On LCSR machines run the command "man sshfs" for instructions on how to do so.

This page last updated April 14, 2012.