OpenAFS on Windows

Install OpenAFS on Windows

1. CSAIL Kerberos for Windows installed and configured
2. Download OpenAFS installers from OpenAFS and unzip its files

   both the 64-bit MSI installer, and the 32-bit tools MSI installer must be downloadedand installed.

3. Start 64 bit installer (name like openafs-en_US-XXX-1-7-XX.msi)
4. Click next, accept the License Agreement, click next.
5. Choose Setup Type: “Typical”
6. At “Configure OpenAFS Client:”
   • Default Cell: csail.mit.edu .
   • Integrated Logon: use Enable only if your Windows username and password match your CSAIL username and password and you use AFS often. If not, choose Disable.
   • Click Next.
7. At “Options for AFS Credentials:”
   • Start AFS Credentials at startup: NO *(important)*
   • Click Next, then Install.
8. Reboot Windows if prompted.
9. Run the 32bit-tools installer left over from step 1 to complete the installation.

Mapping Drive Letters

• Click the Windows Start Menu, choose Computer, and then clic kMap network drive from the menu bar.
• Drive: Choose the drive letter you wish to use, for example U:
• Folder: Enter the path with backslashes (\), eg \\afs\csail.mit.edu\u\y\yourusername
• Reconnect at logon: leave checked YES.
• Click OK.

Windows ACL Editor

You can change the permissions of AFS folders from Windows. Right-click on the folder you want to modify.

Known Issues

1. If you need access to Athena AFS and/or to use Athena Kerberos tickets (eg for SAPgui) at the same time that you’re accessing CSAIL AFS, we recommend only obtaining Athena Kerberos tickets and configuring AFS as described in the Cross-Cell How to.

Performance Adjustments (optional)

If your hard disk (C:) has many GB free, the following adjustments to the AFS Client Service will result in better performance:

1. In Start Control Panel, choose “View By: small icons” or “Classic view”. You want “AFS Client Configuration.”
2. Select the Advanced tab.
   • Cache Size: increase to between 512000 and 1024000
   • Chunk Size: click up arrows until 1024
3. Dismiss the various AFS Client windows by clicking the OK buttons.
4. If prompted, restart the AFS Client.
5. If asked, choose “This control panel performed correctly.”