Our Synology RS18016xs+ loses connectivity regularly to one of the ten WD 8TB Red Pro drives. The RAID-set consists of two Samsung 2TB 850 Pro SSDs as cache and ten WD8001FFWX-68J1UN0 SATA disks.
According to Synology this is a known problem resolved by replacing all disks by WD for ones from a newer batch.
Anyone can confirm this???
Below a list of disks dropped out and when:
2018/02/22 01:07:00 WD8001FFWX-68J1UN0 RS18016xs+ Disk 04 Disk plugged out.
2018/02/12 22:48:43 WD8001FFWX-68J1UN0 RS18016xs+ Disk 03 Disk plugged out.
2018/01/10 17:42:18 WD8001FFWX-68J1UN0 RS18016xs+ Disk 06 Disk plugged out.
2017/12/12 22:26:38 WD8001FFWX-68J1UN0 RS18016xs+ Disk 09 Disk plugged out.
2017/11/25 16:27:43 WD8001FFWX-68J1UN0 RS18016xs+ Disk 07 Disk plugged out.
2017/11/17 01:29:35 WD8001FFWX-68J1UN0 RS18016xs+ Disk 06 Disk plugged out.
2017/11/11 13:08:47 WD8001FFWX-68J1UN0 RS18016xs+ Disk 03 Disk plugged out.
2017/11/08 07:54:54 WD8001FFWX-68J1UN0 RS18016xs+ Disk 11 Disk plugged out.
2017/10/23 10:07:35 WD8001FFWX-68J1UN0 RS18016xs+ Disk 08 Disk plugged out.
2017/10/07 18:14:03 WD8001FFWX-68J1UN0 RS18016xs+ Disk 11 Disk plugged out.
2017/10/03 18:36:24 WD8001FFWX-68J1UN0 RS18016xs+ Disk 12 Disk plugged out.
2017/09/23 13:16:10 WD8001FFWX-68J1UN0 RS18016xs+ Disk 07 Disk plugged out.
2017/09/11 11:13:30 WD8001FFWX-68J1UN0 RS18016xs+ Disk 06 Disk plugged out.
2017/08/31 02:15:05 WD8001FFWX-68J1UN0 RS18016xs+ Disk 12 Disk plugged out.
2017/07/22 20:46:00 WD8001FFWX-68J1UN0 RS18016xs+ Disk 09 Disk plugged out.
2017/06/17 04:13:54 WD8001FFWX-68J1UN0 RS18016xs+ Disk 05 Disk plugged out.