Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Table of Contents
minLevel1
maxLevel7
typeflat
separatorpipe

Overview: Global Filesystems

The Teton global parallel filesystem configured with a 160 TB SSD tier for active data and 1.2 PB HDD capacity tier for less-used data. The system policy engine moves data automatically between pools (disks and tiers). The system will automatically migrate data to HDD when the SSD tier reaches 70% used capacity. Teton has several spaces that are available for users to access described in the table below.

...

Global Filesystems

Filesystem Name

Quota (GB)

Snapshots

Backups

Purge Policy

Additional Info

home

25

Yes

No

No

Always on SDD

project

1024

Yes

No

No

Aging Data will move to HDD

gscratch

5120

No

No

Yes

Aging Data will move to HDD

...

  • File spaces within the Teton cluster filesystem may be subject to a purge policy. ARCC reserves the right to purge data in this area after 30 to 90 days of no access or from creation time. Before performing an actual purge event, the owner of the file(s) will be notified by email several times for files that are subject to being purged.

Storage Increases on Teton

  • Project PIs can purchase additional scratch and/or project space at a cost of $100 / TB / year.

  • Additionally, PIs can request allocation increases at no cost for scratch and/or project space by submitting proposals that must be renewed when substantial cluster or storage changes occur:

    • the scientific gain and insights that will be or have been obtained by using the system,

    • how data is organized and accessed in efforts to maximize performance and usage.

    • Projects are limited to 1 no-cost increase.

  • To request more information, please contact ARCC.

Special Filesystems

Certain filesystems exist on different nodes of the cluster where specialized requirements exist. The table below summarizes these specialized filesystems.

Specialty Filesystems

Filesystem Name

Mount Location

Notes

petaLibrary

/petalibrary/homes

Only on login nodes

petaLibrary

/petalibrary/Commons

Only on login nodes

node local scratch

/lscratch

Only on compute nodes, Moran is 1 TB HDD, Teton is 240 GB SSD

memory filesystem

/dev/shm

RAM-based tmpfs available as part of RAM for very rapid I/O operations; small capacity

...