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 ST9500420AS with firmware D005SDM1.
The average temperature for this hard disk model is 39°C (min=28°C max=50°C) and yours is 38°C.

  Attribute   Current   Raw
Raw Read Error Rate 89 000002F3C89A
Spin Up Time 100 000000000000
Start/Stop Count 99 000000000777
Reallocated Sector Count 100 000000000009
Seek Error Rate 74 000D14B05E21
Power On Hours Count 78 000000004CCD
Spin Retry Count 100 000000000000
Power Cycle Count 99 00000000075C
End To End Error Count 100 000000000000
Reported Uncorrectable Errors 1 0000000012D9
Command Time Out 100 000000000085
High Fly Writes 100 000000000000
GSense Error Rate 100 0000000000C7
Power Off Retract Count 100 0000000000DA
Load Cycle Count 1 000000075AC7
Hardware ECC Recovered 46 000002F3C89A
Current Pending Sector 100 000000000002
Offline Uncorrectable Sector Count 100 000000000002
Ultra DMA CRC Error Rate 200 000000000008
Write head 100 D3EC000045F9
Total LBAs Written 100 0000F37FCAEF
Total LBAs Read 100 00001AE44F52
Free fall protection 1 0000000000D9

Troubled attributes:
Attribute Airflow Temperature failed in the past. Its current value is 62, the worst value was 41 and the threshold is 45. According to the manufacturer, this is an advisory condition.

BLOCKING ISSUE : your hard disk has 2 pending sectors. Those are sectors that couldn't be properly read and that the hard disk logic is waiting for a write operation to try to remap to a spare sector (if available). According to the Reallocated Sector Count attribute, your hard disk seems to have available spare sectors. A simple disk surface scan won't be enough to force the remap operation. You need a read/write surface scan to remap the sector. The best option should be a tool that knows about what should be read from that sector so that it has some option to apply the best fix to the missing data.

BLOCKING ISSUE : your hard disk has 2 offline uncorrectable sectors. Those are sectors that an offline scanning found as unreadable. Offline scanning is a process that can be automatically started by the hard disk logic when a long enough idle period is detected or that can be forced by some tool. Those unreadable sectors are identified and the hard disk logic is waiting for a write command that will overwrite them to try to remap them to spare sectors (if available). According to the Reallocated Sector Count attribute, your hard disk seems to have available spare sectors. A simple disk surface scan won't be enough to force the remap operation. You need a read/write surface scan to remap the sector. The best option should be a tool that knows about what should be read from that sector so that it has some option to apply the best fix to the missing data.

NOTE : your hard disk Power On Hours Count attribute current value (78) is below the normal range (96 - 100) reported for your specific hard disk model. Basically your hard disk was powered on for more than the maximum time the average user did. This means that either all of the reports collected are from hard disks that were not powered on for too long (this is realistic for recent models) or that your hard disk is becoming old. Usually this is not considered as a pre-failure advisory, but you should check whether you want to replace the hardware or keep an eye on its performances over time.

The overall fitness for this drive is 0%.
The overall performance for this drive is 75%.

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.