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Documentation

  • Requesting An Account
  • Frequently Asked Questions
  • Cluster Specifications
    • Node Features (Constraints)
    • Node List
    • Partition List
      • Gypsum
    • Storage
  • Connecting
    • SSH
    • Unity OnDemand
    • Connecting to Desktop VS Code
  • Managing Files
    • Command Line Interface (CLI)
    • FileZilla
    • Globus
    • Scratch: HPC Workspace
    • Unity OnDemand File Browser
  • Software Management
    • Conda
    • Modules
      • Module Usage
      • Module Hierarchy
    • Unity OnDemand
  • Submitting Jobs
    • Batch Jobs
      • Array Batch Jobs
    • Interactive CLI Jobs
    • Unity OnDemand
  • Tools & Software
    • ColabFold

Documentation

  • Requesting An Account
  • Frequently Asked Questions
  • Cluster Specifications
    • Node Features (Constraints)
    • Node List
    • Partition List
      • Gypsum
    • Storage
  • Connecting
    • SSH
    • Unity OnDemand
    • Connecting to Desktop VS Code
  • Managing Files
    • Command Line Interface (CLI)
    • FileZilla
    • Globus
    • Scratch: HPC Workspace
    • Unity OnDemand File Browser
  • Software Management
    • Conda
    • Modules
      • Module Usage
      • Module Hierarchy
    • Unity OnDemand
  • Submitting Jobs
    • Batch Jobs
      • Array Batch Jobs
    • Interactive CLI Jobs
    • Unity OnDemand
  • Tools & Software
    • ColabFold

On this page

  • Snapshots
    • Restore files from a snapshot
  1. Unity
  2. Documentation
  3. Cluster Specifications
  4. Storage

Storage

Below is a table of all available storage on Unity.

MountpointNameTypeQuotaDescription
/homeHome directoriesHDD50 GBHome directories should be used only for user init files.
/work/pi_Work directoriesSSD1 TBWork should be used as the primary location for running cluster jobs. This is a shared folder for all users in the PI group.
/projectProject directoriesHDDAs NeededProject directories are available to PI’s upon request. Good for large dataset storage or any larger storage that is not directly used for job I/O. PI’s should e-mail hpc@umass.edu to request. A common use case is generating job output in /work and copying to permanent storage in /project afterwards. Not for job I/O
/neseNESE mountsHDD/TapeVaryingLegacy images available from the northeast storage exchange can be found here. Not for job I/O
/nasBuy-in NAS mountsVaryingVaryingLegacy location where the mounts for buy-in NAS hardware are located on Unity. For users who purchased storage nodes for their own use on Unity only.
/scratchScratch spaceSSDN/ASee the HPC Workspace scratch documentation
/gypsumGypsum devicesHDDVaryingFor users migrating from the Gypsum cluster to the Unity clusters, you will find all your old storage here.

Snapshots

Backups are not available on the Unity cluster. There are temporary snapshots created each day at 1am UTC. Snapshots older than three days are deleted. Self-directed restores are accomplished by accessing read-only snapshots (see table below).

FilesystemNameSnapshot location
/home/<username>Home directory/snapshots/home/unity_<timestamp>/<username>
/work/pi_<pi-username>Work directory/snapshots/work/unity_<timestamp>/pi_<pi-username>

Restore files from a snapshot

The following code sample shows how to restore a specific directory from a snapshot. The example restores to a restore directory first to ensure that changes aren’t overwritten.

mkdir ~/restore
cp -a /snapshot/home/unity_2023-02-08_01_00_00_UTC/<username>/path/to/file/or/directory ~/restore/
Last modified: Monday, November 20, 2023 at 5:32 PM. See the commit on GitLab.
University of Massachusetts Amherst University of Massachusetts Amherst University of Rhode Island University of Rhode Island University of Massachusetts Dartmouth University of Massachusetts Dartmouth University of Massachusetts Lowell University of Massachusetts Lowell University of Massachusetts Boston University of Massachusetts Boston Mount Holyoke College Mount Holyoke College
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