> I have a setup with /var/lib/backuppc mounted to a 1 TB Firewire 800
> drive. From a standpoint local to BackupPC, it's transparent. With USB
> you'll be limited to 480 Mbps minus overhead, but that's about the
> only real consideration I'm aware of--and that's still 60 MB/s
> theoretical, which you probably won't reach, anyway.

In one throughput test, I got about 25MB/sec over USB2 and 37MB/sec over
eSATA.  Same disk drive, I think it was a 1.5T seagate.  Don't remember
what USB bridge I used, i'm sure that matters.  Might have been one of
those cheap external dongles.

I would imagine firewire would do about as well as eSATA, it is pretty
efficient compared to USB.

> > Would like some advise on the best way to backup backuppc. I have a
> > 1TB  USB drive that I would like to copy all of our backups to. Has
> > anyone done this? How easy is it to roll back from USB?

All you need to do is unmount your backuppc filesystem, and dd from the
raw device containing the filesystem to your new device.  

danno
--
Dan Pritts, Sr. Systems Engineer
Internet2
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