Lyonnesse wrote:
I'm on OS-X 10.7.5. I know time machine 'works' with external HDs but there are pages of people having the same problems as me with QNAPs, and nothing appears straightforward or consistent. The qnap is not my piece of kit and it's owner is a Windows person. He wants me to find a way to rename my macbook to be consistent with what he can see on his qnap. I can't find any place to rename it, and I don't accept that is the issue since we've been able to fix the problem without renaming in the past.
I agree that it probably won't help (unless the name is too long or has strange characters). See #C9 in Time Machine - Troubleshooting for requirements and instructions.
When I try to connect in Time machine it appears to do it, but after a few minutes it announces it is deleting the back-up and then creates a new backup on my hard disk.
Do you mean you get the "Time Machine must create a new backup for you" message, per #C13 in the above link? If so, see if anything in the pink box there helps.
I've not installed anything else on my mac;
I assume that's in reference to my reply to your statement that "even though it's switched off, it keeps kicking in and backing up." Turning Time Machine OFF won't cancel a backup that's already running (or trying to connect). If that's what's happening, see #D6 in the Troubleshooting link.
If backups still start while TM is off, it's possible the preference file is damaged; if so, try a "full reset" per #A4.
I don't want to buy a time capsule just to get something compatible. I don't want to lose all my backups every couple of months and I don't want to waste hours under the hood trying to understand why I can't oonfigure something as simple as a back-up. I just want a reliable, self-evident tool
Have you made sure you have the latest firmware/software for the QNAP, and that it's fully compatible with Time Machine on the version of OSX you're running? (There are some changes from one version of OSX to another; some NASs that worked fine on Snow Leopard won't work on Lion; some makers have provided updates, some haven't. That's one of the risks you take with a 3rd-party NAS.)
Right now it seems that the best option is to find a good piece of third party software that I can configure and leave to run without all these issues.
You might want to try either CarbonCopyCloner or SuperDuper. I know CCC works over a network, but am not sure about SuperDuper. See the green box in Time Machine - Frequently Asked Question #27 for links to those, and some other alternatives.
None of the alternatives work the way Time Machine does; CCC has an option to "archive" the backups of things you've changed or deleted, but they're harder to find than with Time Machine. I don't use SuperDuper, but I don't think it has any such option -- it just keeps copies of what's currently on your Mac. Some of the others may allow archiving; I'm not familiar with them.