System crash

Dear readers,

The computers around me are failing. Perhaps it is a sheer coincidence but it will be a heavy blow to my PhD work. My data/docs are kept in the following places

1. My Desktop
2. My Netbook (+synced to an NTFS partition in the same drive)
3. My primary workstation
4. An USB that I use to sync.

No. 1 is showing signs of aging while 3 has already started giving warnings. Backing up is essential.

Regards.