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Forum Discussion
I/O errors on disk
hi, i have a readynas duo (original) and i've started to get notifications in the log of I/O errors...
Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon.
how do i determine which of the two disks is generating the errors? when i look at the SMART stats for each drive, they look pretty much identical.
i also get the following message at the same time as the above one...
A SATA reset has been performed on one or more of your disks that may have affected the RAID parity integrity. It is recommended that you perform a RAID volume resync from the RAID Settings tab ( accessible in the Volumes page => Volume tab in FrontView ). The resync process will run in the background, and you can continue to use the ReadyNAS in the meantime.
is this really a drive problem or something else?
thanks,
pete
Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon.
how do i determine which of the two disks is generating the errors? when i look at the SMART stats for each drive, they look pretty much identical.
i also get the following message at the same time as the above one...
A SATA reset has been performed on one or more of your disks that may have affected the RAID parity integrity. It is recommended that you perform a RAID volume resync from the RAID Settings tab ( accessible in the Volumes page => Volume tab in FrontView ). The resync process will run in the background, and you can continue to use the ReadyNAS in the meantime.
is this really a drive problem or something else?
thanks,
pete
3 Replies
- Maybe you can post the SMART stats here.
- here are the smart stats for the two drives
**** disk 1
SMART Attribute
Throughput Performance 0
Spin Up Time 10771
Start Stop Count 3016
Reallocated Sector Count 0
Seek Time Performance 0
Power On Hours 2421
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 7
Program Fail Cnt Total 10506789
G-Sense Error Rate 3
Power-Off Retract Count 0
Temperature Celsius 32
Reallocated Event Count 0
Current Pending Sector 2
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 7
Load Retry Count 0
Load Cycle Count 3017
ATA Error Count 0
Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 166
Power glitches 0
Hard disk resets 17
Retries 17
Repaired sectors 0
**** disk 2
SMART Attribute
Throughput Performance 0
Spin Up Time 11427
Start Stop Count 3198
Reallocated Sector Count 0
Seek Time Performance 0
Power On Hours 2439
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 8
Program Fail Cnt Total 10512172
G-Sense Error Rate 1
Power-Off Retract Count 0
Temperature Celsius 31
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
Load Retry Count 0
Load Cycle Count 3198
ATA Error Count 0
Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 4
Power glitches 0
Hard disk resets 17
Retries 0
Repaired sectors 0 - In the first drive, the "Current Pending Sector 2" indicates two failures on reading the disk. (That is similar to the reallocated sectors, but since it was on a read, the drive didn't reallocate).
The "hard disk resets" are more concerning - the "Retries 17" suggest to me that the first disk might be the cause.
You could open an on-line support request if you want Netgear Support to take a look.
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