Hard disk health and reliability analysis

Almost every EIDE or SATA hard disk includes S.M.A.R.T. data. That information is collected by the drive itself and contains data that the manufacturer considered relevant to check reliability. The data is made up of several attributes that have a current value, a worst one, a threshold, some raw data, and some flags. Basically, when any attribute's current value is below its threshold, the hard disk is considered unreliable and likely to fail. By using several techniques, this report tries to give a wider range of information, basing its analysis on advanced comparisons with normal values based on real hard disks and on expert-like checks. The final results are not to be taken as an absolute truth, but they are almost as good as a professional expert advice about your hard disk status.

Your hard disk is a ST3500413AS with firmware JC45.
The average temperature for this hard disk model is 34°C (min=25°C max=43°C) and yours is 33°C.

  Attribute   Current   Raw
Raw Read Error Rate 107 000000DCE28D
Spin Up Time 100 000000000000
Start/Stop Count 96 000000001085
Reallocated Sector Count 100 000000000000
Seek Error Rate 81 00000843BF21
Power On Hours Count 97 000000000D73
Spin Retry Count 100 000000000000
Power Cycle Count 98 0000000008F1
SATA Downshift Error Count 24 00000000004C
End To End Error Count 100 000000000000
Reported Uncorrectable Errors 93 000000000007
Command Time Out 100 000000000890
High Fly Writes 94 000000000006
Hardware ECC Recovered 40 000000DCE28D
Current Pending Sector 100 000000000000
Offline Uncorrectable Sector Count 100 000000000000
Ultra DMA CRC Error Rate 200 000000000000
Write head 100 88D0000023E0
Total LBAs Written 100 0000321922EE
Total LBAs Read 100 000048A89CFE

All the attributes of your hard disk are above the S.M.A.R.T. thresholds set by the manufacturer. This is good.

NOTE : your hard disk Power Cycle Count attribute current value (98) is below the normal range (99 - 100) reported for your specific hard disk model. Basically your hard disk was power cycled more times than the maximum number the average hard disk was. Power cycles put some stress on the hard disk mechanic. Sometimes power cycles can be caused by a loose hard disk power connector. Make sure it is properly fastened.

WARNING : your hard disk High Fly Writes attribute current value (94) is below the normal range (100 - 100) reported for your specific hard disk model. The hard disk monitors the distance between the head and the plates. When it deviates from specifications, a possibly bad write could happen. The hard disk logic updates this attribute counter and applies some counter-measures (tries to rewrite, reallocates the sector...). High temperatures and vibrations can influence this attribute.

The overall fitness for this drive is 92%.
The overall performance for this drive is 92%.

The link to get back and see a new report about this hard disk in the future is this. Consider that new hard disks and new checks are added over time.


DISCLAIMER: this report does its best to highlight issues and warnings related to your hard disk. It cannot be held responsible for any mistake. This page and its results cannot be used in any other way but the one defined by its author.