RAID drive file deletion.

There is something else at play as raid wont do this. Do you have some backup sioftware enabled and in what format?

Sorry, but I'm not a techie person. Both nas drives are Iomega units ( now called emc2). Systems were originally set up and register with their online system.

currently have drives off the network.

even if I connect just one drive to a laptop (cat 6 cable) and use the Windows 7 software, deleting shows the file to go, but then 10 seconds later it re appears. 

I do not have any other backup software in use.

i thought raid 5 spread the data across the drives, and if one failed it rebuilt from the others, and assumed that is was causing the rebuild, as the deleted files, were being automatically rebuilt from the other drives in the unit?

No, that's not how RAID5 works.

The files are spread across all disks but there is enough information to rebuild if a single drive fails, and is then replaced.  It's not a backup but it looks like you have something else operating in the background.

Just to add from a user perspective it appears and behaves just like a single drive.  So deleting files will do exactly that.

Guinnless posted:

Just to add from a user perspective it appears and behaves just like a single drive.  So deleting files will do exactly that.

So does that mean that if there are two HDDs in the RAID5, deleting a file twice should delete it from both HDDs?

best

David

RAID 5 requires a minimum of 3 Hard drives.

As RAID makes the drives act as a single storage unit you would only see one version of any file and only need to delete it once to completely remove it.

My nas has 6 x 3Tb drives. Think the raid works across 5 drives and 1 hot swappable?

still can't get to delete the music files though. 

googled it, and read that you need specific software to delete raid files?

all beyond me

This definitely isn’t a RAID issue. This should be transparent to all usual file managers, e.g. Windows Explorer or Finder on a Mac. Delete a file on a RAID device, and it’s gone... or at least marked as deleted with the space availabile. You mention having 2 NAS’? Are the set up to automatically replicate files or anything similar? Something is detecting the missing file and copying it from elsewhere. This is not standard RAID behaviour. Hope you have a computer buddy somewhere close.

Looking on the interweb it seems that some iomega NAS drives have rsync synchronisation software for file sharing/synchronisation. A NAS server can be configured as either a source or destination server. Is it possible that the NAS with which you having this issue has been configured as a destination server and is being automatically updated by your other (source) NAS server from its copy of the deleted file?

It almost sounds as if he has two nases configured with rsync to each other, which could be interesting!

 ind you that still would not cause the issue so far as my brain can work out.