Can I read a readynas drive on my PC?

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Royalblue wrote:

I can access the admin page without any problems.

 

I get the following error message on the Admin page:

remove inactive volumes to read the disk# 1,2,3,4  (With 4 red disks in the volumes tab)

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Which means that the volume is still not mounted (despite what you are seeing in windows file explorer)

Disk 3 (serial number 54NWT7MNS) isn't doing that well - it has 16 ATA errors, and a very high spin retry count of 65536. Disk 4 (Serial number  54NS1YJNS) also has 28 ATA errors.  ATA errors are issues with the SATA bus - so it's hard to tell if they are caused by the drive reporting them, or by something else.  But we are seeing errors in dmesg.log

[Fri Mar 15 11:17:22 2024] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x400000 action 0x6 frozen
[Fri Mar 15 11:17:22 2024] ata3: SError: { Handshk }
[Fri Mar 15 11:17:22 2024] ata3.00: failed command: WRITE DMA EXT
[Fri Mar 15 11:17:22 2024] ata3.00: cmd 35/00:00:40:60:1a/00:08:00:00:00/e0 tag 4 dma 1048576 out
         res 40/00:01:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[Fri Mar 15 11:17:22 2024] ata3.00: status: { DRDY }

and 

[Fri Mar 15 11:19:14 2024] ata2: SError: { Handshk }
[Fri Mar 15 11:19:14 2024] ata2.00: failed command: WRITE DMA EXT
[Fri Mar 15 11:19:14 2024] ata2.00: cmd 35/00:40:00:28:80/00:05:00:00:00/e0 tag 17 dma 688128 out
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
[Fri Mar 15 11:19:14 2024] ata2.00: status: { DRDY }

You also have a very full OS partition

Mar 15 11:16:50 Dardang readynasd[2539]: System volume root's usage is 83%. This condition should not occur under normal conditions. Contact technical support.

Unfortunately there is no technical support for ReadyNAS anymore, so you cannot follow the advice in the error message.

Although the OS partition needs attention at some point, the problem really seems to be the errors coming from two different disks. Unfortunately RAID can't deal with 2 failing drives.

I think the next step is to power down the NAS and test these disks in a Windows PC (connecting with SATA or a USB adapter/dock).  Normally I recommend vendor tools (WDC's dashboard or Seagate's Seatools).  I don't use Toshiba drives myself, so I don't know the best tool to use.  You could try this one:

• https://www.toshiba-storage.com/wp-content/uploads/2018/02/TOSHIBA_Storage_Diagnostic_Tool.zip