On 2007-10-15 20:19:47 -0400, "Alex"
said:

Given the importance of a navigation computer to a cruiser, it makes
sense to have a current "image backup" of the hard drive that can be
used to quickly restore the computer so all applications, charts, etc.,
are immediately available.

Oh yeah -- and test the backups! (g)

Even better, "mirror" the internal drive so you can BOOT from the
backup! And do it periodically, spot-checking recent files and
programs. Our Mac will synchronize the external to match the 30 gigs of
internal data in about half an hour. I expect Windows will do about the
same thing.

Then put the backup in a electronically and magnetically shielded,
water-tight, air-tight container.

(says one who lost almost all of 20 years' files despite a image drive
and incremental backups. All failed in the same week -- a friend's
power surges took out two of them as I tried to get his back up.)

--
Jere Lull
Tanzer 28 #4 out of Tolchester, MD
Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/