ThanasisPolitis

Thank you for the reply! It seems that my cache drives have SMART errors and I can see that in the logs too... I/O error, dev loop2, sector 27962672 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 BTRFS error (device loop2: state EA): bdev /dev/loop2 errs: wr 20, rd 1, flush 1, corrupt 1, gen 0

My server is not responding in any services, SMB or HTTPS, dashboard says CPU is 100% on all cores, however HTOP shows a different picture? Any ideas?

Thank you for the reply! Synology is configured to use minimum SMB2 with large MTU and max SMB3. Synology reports that it is using SMB3 User [unraid] from [...] via [CIFS(SMB3)] accessed shared folder [...]

I am experiencing the same issue as well... Unraid complains about syslog being full and all I see is: May 29 01:02:34 kernel: CIFS: __readahead_batch() returned 925/1024 May 29 01:03:23 kernel: CIFS: __readahead_batch() returned 421/1024 May 29 01:03:42 kernel: CIFS: __readahead_batch() returned 573/1024 May 29 01:04:15 kernel: CIFS: __readahead_batch() returned 337/1024 May 29 01:04:48 kernel: CIFS: __readahead_batch() returned 415/1024 May 29 01:05:07 kernel: CIFS: __readahead_batch() returned 825/1024 May 29 01:05:27 kernel: CIFS: __readahead_batch() returned 201/1024 May 29 01:05:30 kernel: CIFS: __readahead_batch() returned 11/1024 May 29 01:05:37 kernel: CIFS: __readahead_batch() returned 61/1024 I have mounted two SMB volumes from my Synology to the Unraid server so I can transfer the files across. Is there any way to stop SMB/CIFS from adding informational logs in the syslog?

Thank you @Squid, very helpful! I will get an HBA that is based on a non Marvell chipset. The question remains then, is it best to split the Parity between two different controllers or keep both Parity drives on the same controller?

Hello I am building a new unraid server with 8 drives in total. 6 drives are for data and 2 will be parity. There are two controllers on the motherboard with the Intel one handling 6 SATA ports and the Marvel one handling 2 SATA ports. What would be the best practice for the Parity drives? Keep them on one Controller or split them between the two? Regards, Thanasis