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Krowten's avatar
Krowten
Aspirant
Jan 25, 2014

Backup Verifcation Issues

For many years I've backed up my Mac's to an Apple Time Capsule. It's one of the older original ones, but it has worked just fine for many many years (and has saved my butt a few times). Recently I got a new Mac and I decided that instead of getting a new Time Capsule, I'd just put a few more drives into my ReadyNAS Pro 6 and use that for my Time Machine backups.

For the first month, the backups worked great, no problems. But then today I got the message from Time Machine that due to a problem with my backup, it would have to destroy it and create a new backup. The logs seem to show a problem with verification of the backup.

I did notice some older posts about these types of problems, but nothing recent. I let it do an entirely new backup and it worked fine.

So my question is, can I rely on doing Time Machine backups to a ReadyNAS? Or is this not a reliable backup target for Time Machine? Should I break down and buy a new Time Capsule from Apple?

I'm running Mavericks on my Macbook Pro and my ReadyNAS Pro 6 is running Radiator 4.2.25.

Thanks for any advice!

Matt

2 Replies

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  • I have more or less the same problem…
    My Ultra2+ worked perfectly since september2011 as a Time Capsule, backing up 2 Macs.
    But since a couple of monthes, I get sometimes "General Protection Fault" errors, which I suspect being the cause of corrupted TimeMachines backups. Now I lost both backups and have to create new ones (I have backups of those backups, but I discovered they are corrupted too ;-). Maybe the Time Machine protocol is not solid enough.

    OK, we all know we have to do backups of our backups… ad nauseam but I would expect a bit more reliability. If I need to spend time every week to do backups of expensive NASs, I loose the benefit of using them and should rather simply plug external drives on my Macs.

    Speaking about reliability, I also had an Apple Time Capsule that stopped working (board & power supply were dead - not the disk) after many years without a single problem.
  • Yeah, I've heard of Time Capsule's failing like that, typically a power supply problem. The backups seem to run much faster to my ReadyNAS so I'm hoping there is some update or fix for this issue. I saw another user post a comment that it was related to switching between wired and wireless networking and I think that may be my case as well. When I'm in my office I use a ThunderBolt Ethernet adapter (from CalDigit, http://www.caldigit.com/thunderboltstation/) but when I'm on the road I use WiFi. I noticed the day this happened that even though I was connected to my Thunderbolt station my network traffic was going over my WiFi, even with the Thunderbolt Ethernet adapter set as a higher priority. The other poster said that as long as he remembers to disable his WiFi before getting into his home/office his backups were ok. So I'm wondering if it starts doing a verification and then Mavericks decides to change networking connections and blows up the verification. If that is the case, then it is a Mavericks issue. But who knows. I guess I could switch my backups to my old TC for a while and see how things go. I just want it to work reliably.

    Matt

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