For users who need long-term storage for large amount of data, HCC provides an economical solution called Attic. Attic is a reliable near-line data archive storage system. The files in Attic can be accessed and shared from anywhere using Globus Connect, with a fast 10Gb/s link. Also, the data in Attic is backed up between our Lincoln and Omaha facilities to ensure high availability and disaster tolerance. The data and user activities on Attic are subject to our HCC Policies.
To use Attic you will first need an HCC account, and then you may request an Attic allocation. We charge a small fee per TB per year, but it is cheaper than most commercial cloud storage solutions. For the user application form and cost, please see the HCC Attic page.
The easiest and fastest way to access Attic is via Globus. You can
transfer files between your computer, our clusters ($HOME, $WORK, and $COMMON on
Crane and Tusker), and Attic. Here is a detailed tutorial on
how to set up and use Globus Connect. For
Attic, use the Globus Endpoint hcc#attic. Your Attic files are
~, which is a shortcut
Note: If you are accessing Attic files from your supplementary group, you should explicitly set the path to /attic/<supplementary_groupname>/. If you don’t do that, by default the endpoint will try to place you in your primary group’s Attic path, to which access will be denied if the primary group doesn’t have an Attic allocation.
The transfer server for Attic storage is
scp /source/file <username>@attic.unl.edu:~/destination/file
sftp <username>@attic.unl.edu Password: Duo two-factor login for <username> Connected to attic.unl.edu. sftp> pwd Remote working directory: /attic/<groupname>/<username> sftp> put source/file destination/file sftp> exit
# local to remote rsync command rsync -avz /local/source/path <username>@attic.unl.edu:remote/destination/path # remote to local rsync command rsync -avz <username>@attic.unl.edu:remote/source/path /local/destination/path
You can also access your data on Attic using our high-speed
transfer servers if you prefer.
Simply use scp or sftp to connect to one of the transfer servers, and
your directory is mounted at
The usage and quota information for your group and the users in the
group are stored in a file named “disk_usage.txt” in your group’s
/attic/<groupname>). You can use either Globus Connect or
scp to download it. Your usage and expiration is also shown in the web
interface (see below).
For convenience, a web interface is also provided. Simply go to https://attic.unl.edu and login with your HCC credentials. Using this interface, you can see your quota usage and expiration, manage files, etc. Please note we do not recommend uploading/downloading large files this way. Use one of the other transfer methods above for large datasets.