The CLAL cluster is a restricted-use cluster of Apple Xserve machines running MacOS X 10.5. The P.I. is Professor Lust.
Server Apple Mac Mini CPU One 2.6 GHz Quad Core Intel Xeon RAM 16 GB Local Disk
- 1 TB Fusion Drive (SSD/HDD) for operating system and apps
- 3 TB RAID1 User Data
- 3 TB RAID1 Time Machine Backup
Operating System MacOS X 10.8.5
clal.cornell.edu runs an Open Directory server. It provides directory services to local server processes as well as the CLAL lab machines in MVR.
Web / http
Part of the web site is restricted to authorized users.
Apple File Sharing
Authorized users can access the file system on clal.cornell.edu via Apple File Sharing.
In Finder, choose "Connect to Server..." under the Go menu:
Enter the afp://clal.cornell.edu path and click on the Connect button
Enter user name and password while prompted.
To use sftp to access file systems on amma2 on Windows PCs, first download the WinSCP client.
Run the installer to install. Then launch WinSCP you will see this dialog box. Type in host name, user name, password, and select "SFTP" as file protocol as demonstrated below:
For the first-time login, you will see another dialog box asking if you want to accept and save the host key. Select "Yes." And that's it. The GUI is very easy to use for transferring files both ways.
- Hourly backups for the past 24 hours,
- Daily backups for the past month, and
- Weekly backups forever
until it runs out of the disk space. Then it will delete the oldest snapshots necessary to recover the disk space required to make the next snapshot. Unfortunately, in Apple's attempt to keep things simple, Time Machine's backup and retention policies are not configurable.
OpenDirectory and Databases
All PostgreSQL and MySQL databases, as well as Open Directory on amma2, are dumped to /System/Backup directory at 11 pm nightly by launchd daemons (cron jobs in MacOS X). The dumps will then be backed up by Time Machine.