flashdrive
Patron
- Joined
- Apr 2, 2021
- Messages
- 264
Hello,
all too often the zfs data pool will have this message:
CRITICAL
Pool 123 state is DEGRADED: One or more devices has been removed by the administrator. Sufficient replicas exist for the pool to continue functioning in a degraded state.
The following devices are not healthy:
• Disk SAMSUNG HD204UI S2... is REMOVED
The workaround to get it working again is to shut down the host, replug the power connector of the HDD's in question and restart the host.
It seems to happen when the TN system is under some load, like 250 MByte / sec file transfers during backups with
www.veeam.com
1. Are my HDDs "HD204UI" not up to the task any more in terms of vibration? I have recycled them from an old system with 4x HD204UI. The new system has 6 hdd's altogether in a tower. I have never had this kind of error when I was running those 4 in the old Solaris system.
2. My hdds only being "desktop grade": is there a HDD compatibility list for TrueNAS? WD Red Plus or the like?
3. When will TN Core automatically "remove" those drives during operation?
4. I have enabled and disable SMART in both EFI and TN Core Services and HDD to no effect.
I do not think that this is a power supply issue.
Also I have switched the hdd's in question in terms of SATA Cable and Power Connector.
I am at a loss here...
all too often the zfs data pool will have this message:
CRITICAL
Pool 123 state is DEGRADED: One or more devices has been removed by the administrator. Sufficient replicas exist for the pool to continue functioning in a degraded state.
The following devices are not healthy:
• Disk SAMSUNG HD204UI S2... is REMOVED
The workaround to get it working again is to shut down the host, replug the power connector of the HDD's in question and restart the host.
It seems to happen when the TN system is under some load, like 250 MByte / sec file transfers during backups with

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1. Are my HDDs "HD204UI" not up to the task any more in terms of vibration? I have recycled them from an old system with 4x HD204UI. The new system has 6 hdd's altogether in a tower. I have never had this kind of error when I was running those 4 in the old Solaris system.
2. My hdds only being "desktop grade": is there a HDD compatibility list for TrueNAS? WD Red Plus or the like?
3. When will TN Core automatically "remove" those drives during operation?
4. I have enabled and disable SMART in both EFI and TN Core Services and HDD to no effect.
I do not think that this is a power supply issue.
Also I have switched the hdd's in question in terms of SATA Cable and Power Connector.
I am at a loss here...