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Home › User Support › KnowledgeBase › Project Home Directories (NFS)

Project Home Directories (NFS)

Systems: DTN, HPSS, Lens, Sith, Smoky, Titan
Categories: Data Management, File Systems
Last Update: 1/15/13
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See this article in context within the following user guides: Titan

Projects are provided with a Project Home storage area in the Network File Service (NFS) mounted filesystem. This area is intended for storage of data, code, and other files that are of interest to all members of a project. Since Project Home is an NFS-mounted filesystem, its performance will not be as high as other filesystems.

Project Home Path

Project Home area is accessible at /ccs/proj/abc123 (where abc123 is your project ID).

Project Home Quotas

Quotas are enforced on project home directories. The current limit is shown on the Storage Policy page. To request an increased quota, contact the User Assistance Center.

Project Home Backups

If you accidentally delete one or more files from your project home directory, you may be able to retrieve it/them. Online backups performed hourly and nightly, with the most recent 6 hours and the most recent 2 nights available. These are available in: /ccs/proj/.snapshot/hourly.* and /ccs/proj/.snapshot/nighty.*. It is possible the files that were deleted will be available in one of those directories.

Note that in the directory name, lower numbers represent more recent backups. Thus, /ccs/proj/.snapshot/hourly.0 is a more recent backup than /ccs/proj/.snapshot/hourly.1.

Project Home Permissions

The default permissions for project home directories are 0770 (full access to the user and group). The directory is owned by root and the group is the project’s group. All members of a project should also be members of that group-specific project. For example, all members of project “ABC123″ should be members of the “abc123″ UNIX group.