Storage Accessible on Discovery

There are two main storage systems connected to Discovery: /home and /scratch. These options have specific quotas and limitations. The list below details the storage options available to you on Discovery if you have an account on Discovery. These are storage options that are connected to Discovery, and you should use when working on Discovery. Every individual with an account on Discovery has both a /home and /scratch directory. Research groups can request additional storage on the /work storage system. Note that currently /work storage is not provisioned to individuals.

Important

The /scratch space is only for temporary storage. It is not backed up, and there is a purge policy for data older than 28 days on /scratch. Please review the /scratch policy on our Policy page: https://rc.northeastern.edu/policy/

NAME: /home/<yourusername> where yourusername is your username, e.g. /home/j.smith
  • DESCRIPTION: You are given a /home directory automatically when your Discovery account is created. This storage is mainly intended for storing relatively small files such as script files, source code, software installation files, and other small files that you need for your work on Discovery. While it is permanent storage that is backed up and replicated, it is not performant storage. It also has a small quota, so you should frequently check your space usage (use a command such as du -h /home/<yourusername> where <yourusername> is your user name, to see the total space usage). For running jobs and directing output files, you should use your /scratch directory.
  • QUOTA: 100GB
NAME: /scratch/<yourusername>
  • DESCRIPTION: You are given a /scratch directory automatically when your Discovery account is created. Scratch is a shared space for all users. The total storage available is 1.8PB; however, while this is performant storage, it is for temporary use only. It is not backed up. Data on /scratch should be moved as soon as possible to another location for permanent storage. You should run your jobs from /scratch and direct your output files to your /scratch directory for best performance, but it is best practice to move your files off of scratch to avoid any potential data loss.
  • QUOTA: N/A
NAME: /work/<yourusername>
  • DESCRIPTION: Research groups can request additional storage on /work. A PI can request this extra storage through the New Storage Space request .

Note

You can also request additional general data storage if needed. See General Data Storage Options for details about the storage options that are not connected to Discovery, and that are available to anyone affiliated with Northeastern University.