Difference: ImagerTechnicalInformation (44 vs. 45)

Imager Filespace

modified: Nov 29, 2010

• Machine local space on Windows: c:/tmp
  • wiped when machine is reimaged, or hard-drive fills up
  • not wiped on reboot
  • not backed up, but could be used for code and data that can easily be reproduced
• Machine local space on Linux: /var/tmp
  • wiped when machine is reimaged, or hard-drive fills up
  • not wiped on reboot
  • not backed up, but could be used for code and data that can easily be reproduced
• Machine local space on Linux: /tmp
  • wiped on reboot; poor space to place data
• Networked space: home directory
  • z: drive on windows, departmental account
  • stores your mail: ~/Mail and website: ~/public_html
  • backed up, RAID, recover through snapshot (see .snapshot in any directory)
  • small amound of space (quota)
• Networked space: /ubc/cs/research/imager/people/
  • backed up, RAID, recover through snapshot (see .snapshot in any directory)
  • setup when you join Imager via tech staff
  • shared space with everyone in Imager lab
  • project data should not be stored here because it may be inaccessible by your supervisor and others when you leave (although this depends on the permissions you set)
• Networked space: /ubc/cs/research/imager/projects
  • backed up, RAID, recover through snapshot (see .snapshot in any directory)
  • shared project data
  • shared within Imager, except PSM
• Networked space: /ubc/cs/research/psm
  • backed up, RAID, recover through snapshot (see .snapshot in any directory)
  • shared project data within PSM group

• The imager filespace is located at /ubc/cs/research/imager . /imager (2.2TB on NetApps2) contains both project/ and people/.
  • To audit disk space usage, try the "du -sk * > space.txt" command in the desired directory.
  • 2.2TB as of Oct 2008 (500GB purchased by Kelly and Robert)
  • 1.7TB as of Feb 2008
• The psm filespace is located at /ubc/cs/research/psm. On Nov 17, 2010, a new partition for psm was created.
  • 250GB as of Nov 2010 (?)
• There is also 1TB of old raid space which was imager's old disk space before moving to NetApps. This raid space (not on NetApps) is divided between two directories: /ubc/cs/research/imager-raid1 (600GB) and /ubc/cs/research/psm-raid1 (400GB).
• NetApps info:
  • Space capacity for NetApps = 7TB for a tray.
  • NetApps1 = smaller capacity, faster, expensive, $10/GB; NetApps2 = larger capacity, slower, cheaper, $5/GB
  • Imager gets 1.7TB of NetApps space for free and needs to pay for additional space. There is a policy on how much space out of the 1.7TB should be allocated to home dirs.

What changed with NetApps

modified: Sep 26, 2007

• NetApps documention link: http://www.cs.ubc.ca/local/computing/accounts/backups.shtml
• The above link contains information on how to use the backup/restore features on the new file servers.
• Recommendations for setting permissions: For most files = -rw------- (default, allows only you to read and write them.) C/C++ programs and other programs = -rwx------ (also default, allows only you to read, execute and write them.) See the man page on umask for information on how default permissions are set. For more information go to: http://www.cs.ubc.ca/local/computing/unix/permissions.shtml