All PCN-supported systems are backed up nightly.
As of May, 2001, the following is the operational PCN backup system:
The first weekend of the month, a full (level 0) backup of the department is performed. These monthly backups will be kept for X years.
Every night, all filesystems are backed up, with a full backup occuring approximately every 6-7 days. These nightly incremental backups are kept for approximately 20-30 days.
This means that if your file was on disk for at least a day in the last month, it is most likely on tape somewhere.
Please remember that system backups are provided by PCN Maintained machines only.
Although PCN cannot provide support to unsupported machines, use the following as basic information for configuring backups for your machine.