Airport Extreme and Time Machine backups using a USB drive

Hi there,
I checked through the threads/FAQ's for an answer to this but couldn't find anything...
I have an AE set up with a USB drive attached as my Time Machine backup drive. When I start my MBP up and initiate a forced backup, Time Machine will go and find my drive (via the AE), mount it and carry out the backup without a problem. However, if I start my MBP up and wait for the scheduled hourly backup, TM doesn't see the drive (or perform the backup) unless I go and manually mount the drive first.
I realise I can put the drive in my login items to auto mount on boot but I wondered if there was a way to get the scheduled backups to work without doing this (as with the forced backups).
Thanks

mattschenker wrote:
Pondini,
Actually, I wasn't thinking about theft. I was just thinking that for security in a possible data-loss "event," it was better to have the backup drive physically separated from the main computer. But maybe that's not necessary.
That's unlikely. A power surge could take out both your Mac and connected external HD. You do have your Macs on good surge protectors or, better yet, U.P.S. systems, right? If not, see [Using a U.P.S. System with a Mac|http://web.me.com/pondini/AppleTips/UPS.html].
But wherever the external HD is, unless it's on a surge protector or U.P.S., it's still exposed.
Other things causing data loss are even less likely to affect your Time Machine drive (especially if there's no other data on it).
Yes, I could hook something up to my Mac Mini. Good point! And that would really keep it separated, since it would be in an entirely different floor. But then again, Time Machine backups done wirelessly would probably take forever.
The first one, yes. But if you have a good WIFI connection, subsequent ones shouldn't take too long or be too obtrusive, except when you've updated a lot of data (like installing an OSX update).
See #22 in [Time Machine - Frequently Asked Questions|http://web.me.com/pondini/Time_Machine/FAQ.html] (or use the link in *User Tips* at the top of this forum), for setup instructions.
But this just shows that there are a lot of options.
Yes.
I do wish Apple would solve the problem of Time Machine working via the Airport Extreme. That would be my favorite option.
Not likely. Time Machine's been out since Leopard, about 3 years, and backups via an Extreme have never been reliable or supported. Just why they work well on a Time Capsule, or even a USB drive connected to a TC, but not an Airport, is a mystery, but that's the way it is.
But it's always a good idea to keep secondary backups. See #27 in [Time Machine - Frequently Asked Questions|http://web.me.com/pondini/Time_Machine/FAQ.html] (or use the link in *User Tips* at the top of this forum), for some suggestions.

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