Dear Philipp,
Thank you for your enquiry.
On the log we see that one HDD is defected? In addition we found that you are using WD20EADS-32S2B0, the S2 sub model is not being supported and is found some of them may have chance to be time out and kick out of the Raid.
Hence, please first obtain the TELNET for us to try mount the data back, but we are not sure if you can successfully backup if we successfully mount it back, as the S2 HDD may drop out again during the time.
We will need your permission to get into your system via telnet access and have a closer look at this problem for solving it. Please help to provide us with the information below so we can access your system.
Remote Access Instructions
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1. Standard Ports we need you to open: 23, 5000, 80
(Please see this link on how to forward your ports, and then select the TELNET application:
http://www.portforward.com/english/routers/port_forwarding/routerindex.htm)
2. Please enable the TELNET or SSH function in Web UI of your Synology NAS . ( [Nework Service] > [Terminal] )
3. WAN IP Address of your Synology NAS:
[Please go to
http://www.canyouseeme.org/ to fill in the above information and check if the port is open or not]
4. A temporary password for admin account of your Synology NAS:
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Thank you.
Best Regards
Jim Cheng
