I recently upgraded from 1.20 to 1.37 before beginning to create logical volumes in order to use. I've created one NAS volume, with shares (some containing data), and one iSCSI (also containing data). At unspecific times, I lose network connectivity with the DSS. PING from a workstation no longer responds and I loose access to shares and iSCSI partitions. I've checked the DSS at console and on one occasion it *may* have been frozen but on other occasions it has responded to the keyboard fine. I can press keys such as C-A-N and F1. I think that on one occasion networking returned, and on another two I rebooted the DSS to regain networking.

I tried reloading with 1.20 but realised most of my volume and share configuration was missing. Reloaded back with 1.37 and both the iSCSI target I had created was no longer there, although the iSCSI volume was. Also all my NAS shares, apart from one, were gone too. Obviously I cannot access the data either (fortunately it's duplicated elsewhere).

I have downloaded two sets of logs after the network freezing problems. I am bemused by what has occurred in my second paragraph and am wondering if I have missed something important. Does changing versions really cause volume/data loss?

Thanks.