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Aspirant

Jul 29, 2015

ReadyNAS Netgear 2120 Stops responding to all traffic (iSCSI / Web interface) #25509387

I have a RN2120 running 6.2.4 with 4 2TB disks. (one of 5 that we have running in our estate, none of the others I'm experiencing this on) This unit is 2 years old.

I started to see this behaviour earlier this month, with no configuration change or anything else changing.

Every 12 hours, the device stops responding to all traffic. The lights on the box appear normal. Once I have power cycled the box, it is rebuilding the array. I have factory reset this device 3 times and it is behaving in the same way every time. The original firmware was 6.0.8 which was behaving in exactly the same way (I upgraded to 6.2.4 in investigating this)

The box is configured for RAID 5, with a single iSCSI lun of 5TB.

I am being told by the webchat folk that this behaviour is 'normal' because it is above 95% usage, but this doesnt make sense, because 4x2TB = 8TB, which when raid 5'd = 6TB and I'm using the maximum that the box will allow me to use which is 5TB.

I am also being told that to escalate or to even get any clarification on this subject will require a paid contract.

I am currently personally suspecting that the device is borked and needs replacement, but would love to know if anyone has experienced similar before and has resolved the issue or if you know what might be causing this issue.

Thanks.

Toni.

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OOM-9
NETGEAR Expert
Jul 29, 2015
How are you using the iSCSI? Is it a Windows file share, VMs or backup?
Depending on how it is being used may determine recommendations.
- tonitheitgirl
  Aspirant
  Jul 29, 2015
  its one big iSCSI LUN being used for veeam backup and replication. There is a single veeam proxy windows (2012) machine connected to it.
  - OOM-9
    NETGEAR Expert
    Jul 29, 2015
    It would typically be recommended to keep the volume closer to 80% of volume capacity. There are general performance and reliability issues that may come up if you exceed that threshold.
    
    This is normally not the best option if data is already on the iSCSI. Other options that you can look at changing to help in these cases; disable the checksum that is under the [System/Volumes/Volume Properties/Settings/Summery] and under disable bit rot protection under [Shares/{share} Settings/Properties]
    
    There can be more things that we could go into, but these items are the more common items that had issues similar to what you have mentioned.