Storage and filesystems

Your home directory is located in /nfshome/username and is shared on all of the hosts over NFS. We have a total of 1.8 TB for all user home directories, so please do not store large data sets in your home directory.

I have created an /nfsopt directory that is shared on all hosts using NFS. This directory is where additional software (Mathematica, Matlab, Root) is installed system wide. Please let me know if you want anything installed here.

We have two large, shared data partitions (14 TB each) that are NFS mounted on all hosts as /nfsbigdata1 and /nfsbigdata2. These can be used for storing large data sets that need to be available on all servers. However, because these are a network filesystem read/write performance will be much lower than a local disk. When running jobs with large amounts of data, we highly recommend using the local /scratch1 and /scratch2 directories instead (see below).

Each server has local scratch storage that is mounted at /scratch1 and /scratch2. These drives are not NFS mounted so data in the /scratch1|2 directory on one host won’t be available on other hosts. These directories range in size from 2-8 TB. These drives should be very fast.

If you use /nfsbigdata1, /nfsbigdata2 or any of the scratch directories, please create a subdirectory for you data that is named with your username.

The /scratch1 and /scratch2 directories on each host are for temporary storage. Any data there could be deleted at any time. Please use /nfsbigdata1 and /nfsbigdata2 for more permanent data storage.