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 ST2000DM001-1ER164 with firmware CC25.
The average temperature for this hard disk model is 31°C (min=23°C max=42°C) and yours is 32°C.

  Attribute   Current   Raw
Raw Read Error Rate 109 00000150DF88
Spin Up Time 97 000000000000
Start/Stop Count 96 000000001236
Reallocated Sector Count 99 000000000300
Seek Error Rate 76 0000028AE7A4
Power On Hours Count 86 000000003136
Spin Retry Count 100 000000000000
Power Cycle Count 100 000000000238
SATA Downshift Error Count 100 000000000000
End To End Error Count 100 000000000000
Reported Uncorrectable Errors 93 000000000007
Command Time Out 100 000100010001
High Fly Writes 58 00000000002A
GSense Error Rate 100 000000000000
Power Off Retract Count 100 000000000001
Load Cycle Count 65 000000011933
Current Pending Sector 94 000000000400
Offline Uncorrectable Sector Count 94 000000000400
Ultra DMA CRC Error Rate 200 000000000000
Write head 100 580F00000ED3
Total LBAs Written 100 0001BAE48812
Total LBAs Read 100 0013F98E19CA

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 768 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.

BLOCKING ISSUE : your hard disk has 1024 pending sectors (this value is very large and your hard disk should be replaced). 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 1024 offline uncorrectable sectors (this value is very large and your hard disk should be replaced). 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 (86) is below the normal range (93 - 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.

SERIOUS ISSUE : your hard disk High Fly Writes attribute current value (58) is below the normal range (97 - 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 0%.
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.