Invalid Data Error
Last modified date:
2023-05-19
Symptom
User will find below system events:
- [Bad Block Log]: Invalid data found on Disk X
- Note:Above event is enhance message to inform user, as long as Storage Pool RAID is functional, user data will not been damaged or lost. Please follow below explanation and instruction to resolve without panic.
What does "Invalid Data Error" mean?
A storage system returns a Invalid data message that is detected under RAID level, which represent that a new bad block is encountered and recorded in the bad block log. Here bad block is defined as I/O error and RAID has tried to rewrite to repair the block but still fails.
This kind of bad block is an I/O error and cannot be repaired by RAID. This may be the same as the disk medium problem or the I/O path problem between the RAID and the disk.
Applicable firmware
- QTS
- QuTShero
Resolution
This kind of bad block is an I/O error and cannot be repaired by RAID. This may be the same as the disk medium problem or the I/O path problem between the RAID and the disk. It’s suggested to check disk S.M.A.R.T status and do a disk test as you do at Medium error.If the disk is located at an attached expansion units, please check unit status and cable signal status as well.
If disk S.M.A.R.T status is health, and I/O path is normal but still occur Invalid data error, please contact QNAP support for engineering team’s help.
Further Reading
For further assistance, ask other users and QNAP experts in the community. Go to QNAP Community
