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Class

Path

Quota

Backup Schedule

Purge Policy

Home Directories

/mnt/home

50 GB - 1TB (or more)

daily

none

Research Directories

/mnt/research

50 GB - 1TB (or more)

daily

none

Scratch Directory

/mnt/scratch

1 million files

none

after 45 days

Small-IO Scratch Directory/mnt/ffs17100 GBnonenone

Local Disk

/mnt/local

as available on node

none

after 14 8 days

Personal data should be stored in /mnt/home/[NetID]. Here, each user has their own 50 GB of space (more available upon request), which is backed up daily; a zfs snapshot is also taken hourly. A 1 TB block of space to be shared among members of a research group may be obtained if the group can provide adequate justification. Additional space may also be purchased. Files on this system, located at /mnt/research/[groupname], are also backed up daily. Both /mnt/home and /mnt/research have compression enabled. This allows better performance and enables significant space savings. The /mnt/scratch file system consists of 1.9 PB of high-speed, distributed space, shared among all users. A user should store files here when a job requires those files to be accessible from all nodes during a computation. This space is not intended for long-term storage, and is thus not backed up. Additionally, any files in /mnt/scratch that are older than 45 days are flagged for automatic deletion.  

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