I have a Westell 160gb external that will no longer power on, how can I get my data off the hard drive? Is it possible?
Check the power supply, if it uses an external one. That may be the issue. If it seems fine, or there's no external one, you may be able to recover your data, but it is likely to require dismantling the unit, and there is no guarantee of success.
Recovery will only be practical if there is a SATA or IDE hard drive inside the unit, that can be removed and connected directly to a computer. This will allow access to the data if and only if the drive itself is undamaged. Otherwise, the only ways to access the data are highly involved and likely to be quite expensive.