Disk space on faculty/research clusters
Users' home directories are located on the LCSR NetApp. Users are given quotas on the NetApp in order to minimize their impact both on other users on the same qtree (NetApp's version of a partition) and the smooth functioning of the NetApp itself. Should you find your initial quota too small, you can request additional space (please give an estimate of what you need) in an email to "help". (Our guideline for max quotas is 5GB for faculty, 3GB for researchers.)
Should you need large amounts of space, there are several options:
- Shared local filesystems
Most machines have some extra disk space set aside in a partition called /freespace/local. You should note that this filesystems are not backed up. Also, 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.
- LCSR's filer
LCSR has a raided (so any single disk failure will not cause data loss) filer with about 9 TB space available on it. The space is split into two separate temporary filesystems. Like the local shared filesystems, this space is not backed up. Usage on the filer is a matter of public record. 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 filesystems are separated as follow:
- 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.
The first two options are available to users without staff intervention. Obviously, neither of those options is appropriate for storage of data which you would be seriously inconvenienced if you lost.
If you maintain your own disk space you would like to access, there are two options for access to your own 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://cs.rutgers.edu/resources/accessing-files-remotely. To arrange for registration of your filesystem, send an email to help@cs.
On the faculty and research machines, we have enabled /net automounting. So if your hostname is "myhost", and you NFS export the filesystem "/my/directory/" to the faculty or research machines, you will be able to automount your files by connecting to "/net/myhost/my/directory".
This page last updated March 27, 2012.