TM drive does not always mount when reconnected

Forgive me if this has been covered, but I could not find it in the archive.
I am using a Fantom 500GB drive for backup from my laptop. Every few days, when I reconnect the drive, it will not mount and backups will not happen. The drive is both Firewire and USB - I generally use Firewire. I have tried repowering the drive, unplugging and reconnecting in all the various permutations, and the drive will not mount. The two things that will make it mount are 1) reboot the computer, or 2) connect the USB cable (although, the Firewire will still not work until after a reboot). Any ideas?
Thanks,
Andy

Andy,
I was just reading some reviews on Newegg dot com for the Fantom Titanium-II TFD500U16 500GB 7200 RPM 16MB Cache USB 2.0 External Hard Drive which I presume is the one you have purchased. There are a lot of negative reviews which suggests that it should be avoided. Read them for yourself.
You get what you pay for and for my hard earn dollar I would be wanting a reliable interface and a reliable mechanism. Seems to me that one or both of those are not up to scratch in your case. There are a lot of good quality Firewire/USB devices on the market such as those from OWC aka Other World Computing. Spend the dollars and buy quality and you wont regret it. You have the best computer on the market with the best OS so pamper it a bit.
Cheers
Chris

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