The volume data encountered an error and was made read-only. It is recommended to backup your data.

[Nick19007]

Hi!

I recieve ReadyNAS Alert Message: "The volume data encountered an error and was made read-only. It is recommended to backup your data" after "Scrub" data task start. before this alert, task "Disk test" executed successfully.

Please direct my further actions to resolve the current fault...

[StephenB]

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@Nick19007 wrote:

Please direct my further actions to resolve the current fault...

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The first thing to do is to back up your data.  Have you done that yet?

[Nick19007]

Now all disks in admin panel-->volumes are red and system says "remove inactive volumes to use disk #1, 2, 3, 4"

I have SSH access, may be do some actions to restore the array?

[Nick19007]

Please help!

[StephenB]

The best option is to contact paid Netgear support (my.netgear.com). There are several possible causes for this error, so it's hard to troubleshoot on your own.

Perhaps also power down the NAS and check the disks in a Windows PC with vendor tools (Seatools for Seagate, Lifeguard for Western Digital).  Label the disks by slot, so you can preserve the order.