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 ST31500341AS with firmware CC1H.
The average temperature for this hard disk model is 36°C (min=25°C max=48°C) and yours is 36°C.

  Attribute   Current   Raw
Raw Read Error Rate 117 000009369FAA
Spin Up Time 100 000000000000
Start/Stop Count 100 000000000009
Reallocated Sector Count 100 000000000000
Seek Error Rate 100 0000000AD598
Power On Hours Count 100 00000000002A
Spin Retry Count 100 000000000000
Power Cycle Count 100 00000000000D
End To End Error Count 100 000000000000
Reported Uncorrectable Errors 100 000000000000
Command Time Out 100 005600560057
High Fly Writes 48 000000000034
Hardware ECC Recovered 51 000009369FAA
Current Pending Sector 100 000000000000
Offline Uncorrectable Sector Count 100 000000000000
Ultra DMA CRC Error Rate 200 000000000000
Write head 100 F1DA0000002A
Total LBAs Written 100 000099E27C33
Total LBAs Read 100 00000D06AAB3

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

WARNING : your hard disk High Fly Writes attribute current value (48) is below the normal range (50 - 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 99%.
The overall performance for this drive is 99%.

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.