PPE storage provision is currently under review, and the following is subject to change.

Various file storage areas are available to PPE group members, with different areas intended for, or suited to, different uses. These include:

  • Home areas (/home in Linux), which are mostly backed-up.
  • Data areas (/data in Linux), which due to the sheer volume of data are generally not backed-up.
  • Scratch space on certain machines (/pcdisk/<HOSTNAME>), which are not backed-up.

It is your responsibility to ensure that your important files are protected, and so you should take particular note of which areas are backed-up.


The majority of PPE Linux machines are configured to mount home and data areas automatically. Home areas are located in /home, and data areas in /data.

Most Linux machines are provided with world-writable scratch space located in /pcdisk/<HOSTNAME>. All users have permission to read and write files in this location. This scratch space is contained on the machine's local disk as opposed to being mounted over the network, and as such may be used to improve the performance of heavily I/O-dependent programs. You should transfer any important files out of this space after your program has completed, and should also clean up any temporary files.

If you want to access storage from a Linux machine which has not been configured to mount these storage areas automatically, you can use CIFS for which you will require administrator rights. The command to mount a directory takes the following form:

$ mount -t cifs cifs://ppesmb<PATH> <MOUNT_PATH> -o user=guphysics/<USERNAME>

For example, if user rabbit wished to mount the /data/carrots directory locally as /mnt, the following command would be needed:

$ mount -t cifs cifs://ppesmb/data/carrots /mnt -o user=guphysics/rabbit

Microsoft Windows

Windows users can access home and data areas using Samba. You can connect to the Samba server using the alias ppesmb, for instance by entering \\ppesmb in the navigation bar in Windows Explorer. Most PPE desktops are bound to the GUPHYSICS domain, and so you will not need to enter any credentials. If you are using a laptop or one of the few desktops which is not part of the domain, you will need to enter your GUPHYSICS credentials to authenticate.

Mac OS X

Start Finder, then Go | Connect to Server....


Enter smb://ppesmb as the Server Address and click Connect.


If requested, enter your GUPHYSICS username and password.

Select the Samba share that you wish to access.


Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng connect_to_server.png r1 manage 59.5 K 2010-08-04 - 09:30 AndrewPickford  
PNGpng ppemgr02.png r1 manage 132.3 K 2010-08-04 - 09:31 AndrewPickford  
PNGpng ppesmb.png r1 manage 37.1 K 2010-08-04 - 09:31 AndrewPickford  
Topic revision: r9 - 2016-04-21 - GordonStewart
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