Can you do a crash test for me?

I think it is better to repeat all my story:

- bought readynas102 with two wd drives in compatibility list to store: some gigabytes of documents and for one (ONE) nfs share to use with pve/proxmox virtualizer. As a developer I have a virtual machine for each customer. So I have many vm but very light usage (one or two together). I chose readynas for: 1) snapshots 2) zfs like protection 3) debian based ( I hoped to do a plugin for ceph) 4) BECAUSE A CERTIFIED NAS SAVES ME A LOT OF TIME COMPARED TO A HOME MADE SOLUTION
- nas worked very well for one month then started crashing. I mean no reply from web interface, nfs protocol not responding and so
- worse when I powered up the nas again the raid1 rebuild was infinite. Here the nas seems to crash but it was only very slow: if I waited one day then I got some reply from the nas
- contacted the technical support that told me to do some hardware tests and then after some time told me to upgrade to new firmware just released that moved sectors from 4096 to bigger size.
- I had to reformat drives...
- so I bought a synology nas and faster sshd drives and moved my data on it
- synology has no snapshots so each day I do a full vm backup of around 200 gb to another disk. But guess what? Synology after few backups crashes too... if I ssh into it I see a load of 20 without doing anything
- so I take back readynas, put new sshd drives, resetted to factory defaults
- now I had the idea to do a bonnie++ test before putting my data on it
- test crashed so contacted technical support but they told me that my nas has no hardware problem and the warranty is out for software problems... if I can prove them that it is an hardware problem they will reply to me.......
- so I have written in this forum
- you suggested me to try less features
- I made an nfs share with only snapshots. Bonnie test passed.
- so I PUT AGAIN MY VMS ON IT
- guess what? now it is the third time that it crashes. And without IO LOAD AT ALL
- this time I enabled ssh
- TODAY i DISCOVERED THE NAS THAT WAS CRASHING BUT SSH WAS WORKING

So I logged in and I discovered:

- 0% cpu usage
- 100mb of free memory no swap usage at all
- no i/o (installed dstat to check)
- stopped apache2 but I was not able to restart it
- can do "ls" in most folders but not in "apps"
- SYSTEM LOAD OF 15!!!
- "sync" command never ends and does no i/o (checked with dstat)

Thanks again for interest,
Mario