Disk space on faculty/research clusters
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
/hostname/local
or
/hostname/tmp.
You should note that these 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,
/filer/tmp1
(~6 TB) accessible from the
faculty
and
research
clusters and
/filer/tmp2
(~3 TB) accessible from the
faculty,
research,
grad
and
ilab
clusters.
Like the local shared filesystems, this space is
not backed up.
Usage on the filer is a matter of
public record.
To reinforce the
temporary
nature of this disk space, all files are remove (with warning) twice
per year.
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.
- 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:
- WebDAV
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
www.cs.rutgers.edu/resources/howto/webdav.
To arrange for registration of your filesystem, send an email to
help@cs.
- /net/yourhost/...
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 August 16, 2012.