Hi All,
Unfortunately the time has come to reach out to the community for help...
Running Truenas-12.0-U8.1
5 x 4TB HDD
1 x 120GB SSD for boot
My fileserver went down so i rebooted and got back in and while in the truenas web gui it froze and then said it had lost connection. Couple more reboots and its crashing (or turning off) within a minute or 2 of booting.
Connected each drive to another PC and SMART is showing them all as good.
Had a search and similar issues came down to either a drive issue or hardware issue (sata port / contoller etc).
Threw together another board and CPU and used different SATA cables and the problem persists.
Removing the 4TB drives and just having the boot drive and i have no issues, so the issue is within that pool.
Because it shutdowns/crashes i cant copy the error messages so i have taken photos.
-Starts with a 'Failed to fully fault in a core file segment..... for rrdcached'
-Progresses to - vm_fault: pager read error, pid 1833 (rrdcached)
-Finally a bunch of these - rrdcached plugin: Failed to connect to RRDCached at....
Then a bunch of stuff that it runs through quickly, that i don't understand, before it restarts.
Initially the web user interface was down as the LAN cable wasn't in but i managed to reset that after the first error. Even if the web user interface loads straight away the problem and errors are the same.
Attached screenshots below, but what can i do to try and repair this, not sure if i should be looking at this from a hard drive failure perspective since SMART is showing them all as good, or if this is an issue with some corrupt data.
I am in the process of checking for BIOS updates for the newer hardware just in case.
Thanks.

Unfortunately the time has come to reach out to the community for help...
Running Truenas-12.0-U8.1
5 x 4TB HDD
1 x 120GB SSD for boot
My fileserver went down so i rebooted and got back in and while in the truenas web gui it froze and then said it had lost connection. Couple more reboots and its crashing (or turning off) within a minute or 2 of booting.
Connected each drive to another PC and SMART is showing them all as good.
Had a search and similar issues came down to either a drive issue or hardware issue (sata port / contoller etc).
Threw together another board and CPU and used different SATA cables and the problem persists.
Removing the 4TB drives and just having the boot drive and i have no issues, so the issue is within that pool.
Because it shutdowns/crashes i cant copy the error messages so i have taken photos.
-Starts with a 'Failed to fully fault in a core file segment..... for rrdcached'
-Progresses to - vm_fault: pager read error, pid 1833 (rrdcached)
-Finally a bunch of these - rrdcached plugin: Failed to connect to RRDCached at....
Then a bunch of stuff that it runs through quickly, that i don't understand, before it restarts.
Initially the web user interface was down as the LAN cable wasn't in but i managed to reset that after the first error. Even if the web user interface loads straight away the problem and errors are the same.
Attached screenshots below, but what can i do to try and repair this, not sure if i should be looking at this from a hard drive failure perspective since SMART is showing them all as good, or if this is an issue with some corrupt data.
I am in the process of checking for BIOS updates for the newer hardware just in case.
Thanks.




