The RTDC
Processing SMA Data
1.2 m Telescopes
AST/RO
Extra

RTDC FAQ


  1. Who can use the RTDC machines?
  2. What do I need to provide to get an account?
  3. What machines can I use?
  4. How do I transfer data between the RTDC and CF machines?
  5. How do I get xwindows to work on the CF machines after going in through login.cfa.harvard.edu?
  6. Can I request that software be installed?
  7. I need lots of room for data. Are there disk quotas?
  8. Are any of the disks backed up?
  9. Can I change my default shell to bash?
  10. Can my disk space be made visible from other RTDC machines?
  11. Can other people see my files?
  12. Can I get a shared disk area for a group project?
  13. Is my data backed up?
[Any questions you'd like to see answered here? Email holly.thomas@cfa.harvard.edu]


  1. Who can use the RTDC machines?

    The RTDC machines are for the use of R&G members and their guests. To use our machines remotely you will need an SI account to access the VPN.

  2. What do I need to provide to get an account?

    Just your CF username. Visitors without a CF account can request access to one of our guest accounts.

  3. What machines can I use?

    You can use any of the machines. You can check their specifications here and how busy they are here.

  4. How do I transfer data between the RTDC and CF machines?

    Find full instructions at SSH and Data Transfer Between RTDC and CF.

  5. How do I get xwindows to work on the CF machines after logging in from the RTDC?

    From an RTDC machines:
    ssh -X login
    ssh -Y cfa0

  6. Can I request that software be installed?

    Yes, just ask Holly.

  7. I need lots of room for data. Are there disk quotas?

    We have not imposed any quotas, you are only limited by the size of the disk. However we ask you to clear out files you no longer require (e.g. intermediate reduction files) to free up space for yourself and other users.

  8. Can I change my default shell to bash?

    Yes. Ask Holly if you need help.

  9. Can my disk space be made visible from other RTDC machines?

    The main reduction disk on rtdc9 (/data1) is exported to all the other a machines as /reduction. We try to limit the number of other disks that are exported to as it makes reboots very complicated. However you can request a disk be mounted elsewhere as we appreciate disk space is limited.

  10. Can other people see my files?

    Yes, other RTDC users can see files in both your home directory and on the reduction disks. They cannot write to these spaces though.

  11. Can I get a shared disk area for a group project?

    Yes. If you want a shared area which multiple people can write to (e.g. for a specific project or group) then please ask Holly. This will only be accessible to RTDC account holders.

  12. Is my data backed up?

    The home directories are backed up weekly. The reduction disks are typically RAID 5 or RAID 6. This will mitigate against most failures but we strongly recomemend you save important files such as final data products or scripts to either your home directory or a personal hard drive. The exception is RTDC7 which is

    [Back to the list]


CENTER FOR ASTROPHYSICS | HARVARD & SMITHSONIAN
60 GARDEN STREET, CAMBRIDGE, MA 02138