Laptop Backup Strategy

I'd like to add several laptops to my current configuration. I waswondering what solutions people used for "transient" hosts. Ideally, themain backup configuration (which handles workstations) would run in theevening. The downside of this is that laptops are VERY rarely (if ever) onthe network at this time. So some of the possible solutions:

1. Force users to occasionally leave their laptops on the network overnight. Probably not going to happen.

2. Setup a second config, to be executed for only transient hosts duringthe work day.Is there a way to keep this on a holding disk & trick amanda into dumpingit with the first config, so that I only use a single set of tapes? Wehave tapes that are somewhat large & somewhat expensive & it would beoverly wastefull to use 2 tapes/day when 1 could be sufficient. It wouldalso be a shame to maintain two indexes & figure out which to restore from.


3. Force users to backup to a server

What do Windows & OS X users use for this? BackupPC? A tar or someproprietary backup format saved to a samba share?

I was wondering which of these solutions (or others that I didn't think ofand couldn't find in the list archives) people use & if there is anyadditional advice that could be useful.


Thanks,
Richard Karnesky