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 ST31000520AS with firmware CC32.
The average temperature for this hard disk model is 32°C (min=23°C max=42°C) and yours is 38°C.

  Attribute   Current   Raw
Raw Read Error Rate 118 00000A8C4510
Spin Up Time 95 000000000000
Start/Stop Count 100 0000000003F5
Reallocated Sector Count 98 000000000057
Seek Error Rate 72 0000010332C4
Power On Hours Count 98 0000000009AB
Spin Retry Count 100 000000000000
Power Cycle Count 100 0000000001F9
SATA Downshift Error Count 100 000000000000
End To End Error Count 100 000000000000
Reported Uncorrectable Errors 100 000000000000
Command Time Out 100 000000000000
High Fly Writes 100 000000000000
Hardware ECC Recovered 44 00000A8C4510
Current Pending Sector 100 000000000000
Offline Uncorrectable Sector Count 100 000000000000
Ultra DMA CRC Error Rate 200 000000000000
Write head 100 383200000EFD
Total LBAs Written 100 00005AD9B06A
Total LBAs Read 100 00006AEF54DD

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

SERIOUS ISSUE : your hard disk has 87 reallocated sectors. Hard disks do have spare sectors (usually from 256 up to 2560) used to replace bad ones. This remapping operation is transparent to the end user. Anyway, this can lead to degraded performances (because remapped sectors are in different places of the disk than the original ones and the head needs additional moving). If reallocated sectors grow over time, you might encounter some serious troubles. A backup of the most important data is suggested anyway.

The overall fitness for this drive is 75%.
The overall performance for this drive is 95%.

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.