Attached is the syslog, there seems to be some problem

 

I was having trouble moving a folder from one share to another yesterday, today it wont let me write to the array

 

Help much appreciated

tower2-syslog-20160427-0559.zip

Tools - Diagnostics. Post complete zip.

Here it is, thank you in advance

tower2-diagnostics-20160427-0738.zip

any ideas what's wrong?

Possibly a cable problem with this disk:

 

Hitachi_HDS5C3030ALA630_MJ1321YNG0GEUA

 

EDIT: That's the problem referred to at the end of your syslog. Other disks have had similar problems in the recent past. Check the SMART reports.

Thanks, I will check the cables

 

I do have a problem in so far as this server's disks never automatically spin down, I assumed it was a problem with a mobo or controller as it's a fairly new server

I don't know if you are aware that there are two places where the spin down delay is set? In Settings -> Disk Settings you can set the global default delay. This can be overridden for individual disks: Main -> DiskN -> Spin down delay. I mention this because in your diagnostics system/vars.txt file your [spindownDelay] values are zero (which I interpret as meaning "never spin down") while my own have values of -1 (which I interpret as meaning "use the default value"). I may be wrong in this interpretation, of course, but mine spin down while yours do not

I didn't know that, I set each disk to use default and they immediately spun down, thank you