I have a client with a Mac Pro and an two undetermined RAID storage systems from Areca, running off of an internal MRAID card. They are currently using the primary RAID array for working files, and the secondary for backups. However, in recent weeks, files have been systematically been deleted off of the working RAID. Deletions do not appear in the console anywhere, either. It always happens in alphabetical order. We have rebuilt the Mac Pro, thinking there might be a fault, but to no avail.
The primary RAID is also shared on the network (about 4 users, all in the same room), but there is no external network access to the device.
Any ideas greatly appreciated as to what might be causing this.