[Solved] How to check the running hours of an unraid hdd?

[CaptainSpalding]

Hi!

 

I just took couple of hdd's from my unraid config and saw that they had been running for almost 3000 hours... One other disc I had had 3300 hours and was not in a good shape.

 

Is there a simple way to check what is the "oldest" drive in the array?

 

 

[RobJ]

Check the SMART reports for all drives.  The Raw_Value for attribute 9 Power_On_Hours is the number of operational hours for the drive.  So long as the drive is not too old, that is the correct number.  Some of the makers of the older drives (500GB or less) were inconsistent with this attribute, but recent hour numbers should be reliable.

[CaptainSpalding]

Thanks!

[wsume99]

Power_On_Hours represents the time that the drive was powered and not the hours it was actually spinning, correct? So that SMART attribute is not very useful if your drives are spun down for a large portion of the day.

[RobJ]

Power_On_Hours represents the time that the drive was powered and not the hours it was actually spinning, correct? So that SMART attribute is not very useful if your drives are spun down for a large portion of the day.

 

That's a good question.  I've always thought it was actual spinning hours, not spun down but powered on time.  Easy enough to test.  My system is down temporarily.  Could someone grab a SMART report, spin a drive down, wait 3 or 4 hours, then spin it back up and grab another SMART report and compare?

[Automatic]

Power_On_Hours represents the time that the drive was powered and not the hours it was actually spinning, correct? So that SMART attribute is not very useful if your drives are spun down for a large portion of the day.

 

That's a good question.  I've always thought it was actual spinning hours, not spun down but powered on time.  Easy enough to test.  My system is down temporarily.  Could someone grab a SMART report, spin a drive down, wait 3 or 4 hours, then spin it back up and grab another SMART report and compare?

 

I would, but, mine is preclearing drives. Anyway, wouldn't it depend on the hard drive's manufacturer?

[S80_UK]

My WD20EARS and WD10EADS drives all report hours powered, regardless of whether they are spinning or not.  How do I know...  They are spun down over 90% of the time, but still clock up over 8000 hours a year.  I get the info from the Smart report on the myMain page of unMenu.  (It's also handy for load cycle count and start-stop count monitoring.)

[wsume99]

My WD20EARS and WD10EADS drives all report hours powered, regardless of whether they are spinning or not.  How do I know...  They are spun down over 90% of the time, but still clock up over 8000 hours a year.  I get the info from the Smart report on the myMain page of unMenu.  (It's also handy for load cycle count and start-stop count monitoring.)

I have all WD20EARS drives in my server and I see the exact same behavior. Not sure how the other OEMs calculate Power_On_Hours but I'd be surprised if it was different.