ReadyNas 2120 Syncing

[jarness17]

Hi,

We have a ReadyNas 2120 which twice over the last two months has randomly started running a sync and stating "The ReadyNas is currently syncing. During this process, the system is still accessible, however, performance and Admin Page responisveness might be impacted". 

The logs state:

Wed Feb 19 2020 6:26:41 System: ReadyNASOS background service started.
Wed Feb 19 2020 6:26:38 Volume: Resyncing started for Volume UserNAS_RAID6Volume.
Wed Feb 19 2020 6:26:36 System: ReadyNASOS service or process was restarted.
Wed Feb 19 2020 6:24:35 System: ReadyNASOS background service started.
Wed Feb 19 2020 6:24:30 Volume: Resyncing started for Volume UserNAS_RAID6Volume.
Wed Feb 19 2020 6:24:28 System: ReadyNASOS service or process was restarted.

Does anyone know why this would randomly start? I always assumed this was just when hotswapping disks and the RAID rebuilds but we havent changed any disks. 

Its causing us a lot of issues as the devices goes very slow. 

I've also attached the error.

Thanks for your help

Jacob

[StephenB]

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@jarness17 wrote:

Wed Feb 19 2020 6:24:28 System: ReadyNASOS service or process was restarted.

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Why did the above restart happen? Perhaps look at the full log zip file.

I believe that is what is triggering the resync.

[Sandshark]

One common reason is a drive error (often ATA error) that makes the NAS drop the drive from the array, then later pick it up as good and start the re-sync.  I just replaced a drive for that exact same issue -- SMART shows 300+ ATA errors.