What is the difference between NFS and CIFS?
- NFS – “Network File System” is used for Unix and Linux based operating systems.
- CIFS – “Common Internet File System” is used for Windows and OS X operating systems.
How do I have my volume mounted on Great Lakes?
- Select the “Great Lakes” option under “Make Available On” section of the SRS form.
Is it possible to distribute charges for a volume across multiple shortcodes?
- Yes. If you are from Michigan Medicine (Med) or the College of Literature, Science, and the Arts (LSA) please contact your local unit support team to assist you with this process. If you are not in one of these units please contact ARC-TS at firstname.lastname@example.org.
How do I add or remove people from my Turbo volume?
- Send these requests to email@example.com. If your volume uses an AD group please indicate that in your email.
What are Unix Groups for?
- In order to set appropriate permissions, and provide access for multiple users on our clusters, local Unix groups must be created by ARC-TS to properly administer your NFS Turbo volume. Any user addition or deletions to Unix groups on the Great Lakes HPC Cluster or other ARC-TS-controlled Unix system must be requested by contacting us at firstname.lastname@example.org.
What are Active Directory Groups for?
- In order to set appropriate permissions for Windows centric volumes, and provide access for multiple users, Active Directory groups must be created by your local IT department to properly administer your CIFS volume.
- We have functionality to control the user lists for an Active Directory group via the membership of an MCommunity Group. If you would like to set this functionality up so you can self-manage membership, please send us email at email@example.com.
How do I set permissions on my new Turbo volume?
The PI associated with the Turbo volume has full control to create directories and set permissions at the lowest level of the volume.
For NFS volumes, this can be done with standard Unix permission commands, such as:
How do I recover lost files from old snapshots?
- Turbo volumes that are configured to use snapshots will save previous versions of files. Please be aware, only files that have been “snap-shotted” overnight can be recovered.
- Linux: To recover files lost in your Turbo volume, navigate to the “.snapshots” directory at the root of your volume. Ex: /nfs/turbo/VOLUME-NAME/.snapshots/
$ cd /nfs/turbo/flux-admin/.snapshot
$ ls -1
Windows: You can recover lost files from snapshots natively:
- Open the directory that the deleted file was held in.
- Right click in the directory that the file or folder was stored and select “Properties”.
- Click on the “Previous Versions” tab when the Properties window opens.
- A list of snapshots will be displayed.
- Select the snapshot from which you wish to restore data.
- In the new window, locate the file(s) you wish to restore.
- Simply drag the file(s) or folder to their correct locations
I’m new to storing data across multiple services like Turbo, Locker and Data Den. How do I tell what service is best for the majority of the data I currently hold?
If you are unsure which of our storage services should be used to host your data, we have written some software that you can download and execute to analyze your files to understand how much of your data is stored in large files, how much of your data has been accessed recently, and the distribution of file sizes and access times. The software is accessible here.
This software doesn’t examine the contents of any data files, it merely scans file attributes, it also does not store any file names after searching through the filesystem.
If you have any questions on this software, or if you are unsure about any of the recommendations the tool sends you, please contact us at firstname.lastname@example.org.