Using AirDisk for backups

Does anyone know if there is a way to rsync or otherwise do a fast copy (perhaps through scripts) directly to the AirDisk. Ideally I'm thinking would/does AirPort Extreme n support rsync directly or offer an rsync url so that the source Mac doesn't have to do the extra lifting by being forced to do a local rsync when in fact the destination drive is remote (AirPort Extreme n).
Example rsynd I do is,
sudo rsync -WavE /Volumes/localsourcevol/ /Volumes/AirDisk_vol/
but it is incredibly slow and tends to slow down over time. For example, an rsync operation that would take perhaps 30min between a PM G4 (wired) and an iBook G4 (wireless), has taken over 16hrs (without signs of being anywhere near complete so I usually kill the rsync) from the PM G4 to the mounted AirDisk on the extreme that would otherwise be routing the traffic to the iBook.
Something else I've found painfully slow and typically ends up failing as a result of timeout is Backup 3.1 (courtesy of .Mac) to backup my homedir to the attached AirDisk. Generally it seems the drive falls asleep and the AirPort is unable to wake when activity demands it.
I'm using a WD My Book Pro Edition II 1TB (the triple interface model) drive attached to the AirPort Extreme N in RAID1 mode (mirrored so I have ~500GB capacity).

I would love to hear if you ever get this to work. My experience with AEBS has been quite poor.
The most obvious problem is that AEBS does not support owner and permissions. This quite excludes backuping a bootable volume to it.
laavu:/Volumes/User User$ mkdir aFolderOnAAEBS
laavu:/Volumes/User User$ sudo chown root aFolderOnAAEBS/
chown: aFolderOnAAEBS/: Operation not supported
laavu:/Volumes/User User$ ls -ld aFolderOnAAEBS/
drwxrwxrwx 2 User User 264 Jul 19 00:39 aFolderOnAAEBS/
-Pete
iBook G4 Mac OS X (10.4.8)

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Thanks for the reply. If I reformat the drive will I be able to access the files on it from the MAC. I do not share the drive with a PC. The files were originally created on a PC which I no longer use. I do want to continue to access the files put there by the PC. I would like to not have to copy them over to the MAC hard drive just to use them. The second aux drive is new and works fine because it was formatted by the MAC. I can drag and drop files there and work with just as if they were on the internal drive.

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Can I use iCloud for backup?

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I am using MS Office 2010 and Windows XP Professional, can I use iCloud for backup of my files and documents? I am planning to transition to a Mac so using the iCloud seems to make the most sence.

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http://support.apple.com/kb/HT2038
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I assume your cable modem is a router.. as such the TC should be wired to it in bridge. It will not do anything worse than now for the network in the house.. and the TC can then be accessed as per normal.
TC is designed to be plugged into the modem or main router by ethernet.
You can move it anywhere you like in the house as long as you have ethernet connection back to the modem.
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2. Since there is no QoS your internet will stop during backups. Or near to.
3. You will affect all wireless clients during the backups.
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2. You can do it with ethernet. and have internet by wireless. but the setup is tricky.. tell us if you want to proceed this way.
3. The problem is, the TC now becomes useless to the whole network and is only used by one computer. You may as well have bought a cheap USB drive, which is more reliable and faster.

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Thanks very much, Bob and LaPastenague,
I ended up replacing the wireless Netgear Router (which Time Warner installed last May) with my older (second-generation) Time Capsule -- and it works flawlessly.
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how do I get the Mac addresses for each device (this won't be a problem, I demand the device, check it, and then return it).
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