Used NetApp for over 7 years across two jobs. Never seen this behavior. I do know for sure that snapshots are read only. They can't be deleted/modified.
Just a suggestion, retain snapshots longer if you have the space. We keep 96 hourly, 60 daily, and 26 weekly. Our snapshot footprint is about 14% of volume, but dedupe and compression savings is 36%. On Tue, Oct 18, 2016 at 10:47 AM, Charles F Sullivan < [email protected]> wrote: > I have two different questions revolving around this. > > > > - Is anyone using NetApp CIFS and seeing entire folders worth of > data disappear mysteriously, including all snapshots? > > - Whether using NetApp or not, has anyone seen users’ home > folders disappear, or at least the contents of them? > > > > We have had several of these over the past year or so. I currently have a > case where the user received a new computer on 10/13 and the home drive > data, which lives on NetApp CIFS, was missing at that point. That’s not too > surprising, but when I went to recover from a snapshot, the snapshots were > also empty going all the way back to the oldest one on 9/17. The user > swears he had accessed the data after 9/17 from his old computer. > > > > To me the most likely scenario is that the user had Offline Files enabled > (not a standard here) and was only using the cached version of the data. > But that would mean that somehow the cached files became orphaned (for some > reason) before the data was deleted from the NAS. This seems kind of > unlikely, but who knows? I can’t imagine that the CIFS server decided to > delete the user’s data and all of the snapshots right at the same time he > got the new machine. That’s even more unlikely it would seem. > > > > If anyone has any other theories or similar experience, I would be > grateful to hear about it. >
