S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology) is a monitoring system for computer hard disk drives to detect and report on various indicators of reliability, in the hope of anticipating failures.

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12answers
295k views

How can I read my hard drive's SMART status in Windows 7?

How can I read the S.M.A.R.T. state of my HDDs while using Windows 7, either automatically or manually?
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5answers
29k views

Can I trust a hard drive that has had to reallocate sectors?

I ran this HD utility called CrystalDiskInfo that displays some of the S.M.A.R.T. information on my drives. It is displaying a "Caution" warning on one of my drives because its "Reallocated Sectors ...
19
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4answers
14k views

Making sense of S.M.A.R.T

First of all, I think everyone knows that hard drives fail a lot more than the manufacturers would like to admit. Google did a study that indicates that certain raw data attributes that the S.M.A.R.T ...
18
votes
6answers
59k views

Util to check external USB Drive health? [closed]

I tried a few utils and none of them worked. Either USB wasnt supported or the drive was 'recognized'. I am trying to figure out if i should dump the drive or not. Its only a year old but the warranty ...
15
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7answers
69k views

How to force a remap of sectors reported in S.M.A.R.T C5 (Current Pending Sector Count)?

The S.M.A.R.T C5 value of my Samsung HM640JJ Hard Drive (in an HP Pavilion dv6 laptop) is "yellow status = caution" C5 was 10 yesterday, and it's 21 today. C4 (Reallocation Event Count) = 0 and 05 ...
15
votes
8answers
35k views

What is the easiest method of checking SMART status for your hard drive?

I've seen programs in the past that were able to check the SMART status of a hard disk drive but it wasn't easy for me to find. Also, I think I had to boot into the CD in order to check on it. What is ...
14
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6answers
22k views

How to access S.M.A.R.T. values when using RAID and Intel Matrix Storage?

We have a RAID 5 array using Intel Matrix Storage (i.e. a motherboard based RAID). One of the hard drives has started to make a grinding noise, and the array is currently rebuilding. We'd like to ...
13
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4answers
1k views

How do hard drive diagnostic tools know if a sector is bad?

When I run into a a hard drive that may be failing, I scan it using ViVARD, which reliably lets me know if the drive needs replacing. How do these sorts of tools work? How can they tell a bad sector ...
12
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3answers
11k views

Is my hard drive failing?

I'm beginning to worry about my ~3yr old WD Green drive. In the last few days i've noticed that my media player is acting weird, it won't move to the next track after a song has finished and also ...
11
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2answers
5k views

Trying to remove/diagnose single Current_Pending_Sector in S.M.A.R.T. data

I'm in a process of doing a fresh Linux install and before I went to do that I thought that it is a good time to verify HDD health since I can safely overwrite any data on the HDD if needed. First ...
11
votes
2answers
900 views

Do S.M.A.R.T. requests wear off the harddrive?

In a german ubuntu guide for the hddtemp program is claimed that every S.M.A.R.T. request wakes up the drive although no data is read. Because some harddrives that can park their head into a parking ...
10
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2answers
4k views

How to make smartd shut up about one particular offline uncorrectable sector?

I have a disk in a two-disk software RAID-1 for which recently an "offline uncorrectable sector" appeared in the SMART status. 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age ...
9
votes
3answers
2k views

Bad Sectors on Hard Drive

I run check disk pretty regularly on my hard drive, and lately it's been saying that I have some bad sectores (66, to be exact). I've run smartctl and HD Tune. Both tell me that I have bad sectors and ...
8
votes
4answers
4k views

Hard drive issues - SpinRite vs. S.M.A.R.T

The Toshiba hard drive in a Sony VAIO laptop went bad. I put in a Western Digital drive (WD1600BEVS-60RST0, firmware v4.01G04) from an HP laptop. I ran SpinRite at level 2 and found some bad sectors, ...
8
votes
2answers
766 views

Where is S.M.A.R.T. data stored on a HDD?

The S.M.A.R.T. attributes are attributes that a HDD keeps about its health and performance. I know that the MBR is stored at C,H,S (0,0,1) which leaves no free disc space for the drive to function. ...
8
votes
2answers
3k views

Unable to Write Zeros to Bad Sectors/Hard Disk Not Counting Reallocated Sectors

I have a drive that is reporting that the current pending sectors is "45". I have used badblocks to identify the sectors and I have been trying to write zeros to them with dd. From what I understand, ...
7
votes
1answer
1k views

S.M.A.R.T. Hard drive failure test?

I'm working on my mom's computer and she freaked because it told her "There was an imminent hard drive failure about to occurr." I did some digging and found it was related to the S.M.A.R.T. ...
7
votes
3answers
2k views

How close to death is my hard drive?

I ran Crystal Disk Info to look at the SMART information on my external 2 TB drive and it's reporting a "Caution" health status. The specific error is the Current Pending Sector Count, which is 196. I ...
7
votes
3answers
2k views

Hard drive had reallocated sectors…but now it magically doesn't! Can I trust it?

Last week my SMART diagnostics utility, CrystalDiskInfo, reported that the external hard drive that I was saving my backups to had suddenly reported 900+ reallocated sectors. I double-checked to ...
7
votes
1answer
1k views

Does Power-Management Affect a Hard-Drive’s SMART Statistics?

Among the various fields in a hard-drive’s SMART statistics, a few are flagged as “life-critical”, that is, those values determine the primary health of the drive and how long it may have left before ...
7
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2answers
2k views

Have I bought a faulty SSD?

I've recently acquired a Samsung Evo 840 120GB, but haven't been able to actually use it. The problems started when trying to do a fresh install of Windows 8 on it: I've retried the process with ...
5
votes
3answers
2k views

65537 bad sectors on my 320Gb usb drive. Is it really dead?

After 222 days of usage my external usb drive's S.M.A.R.T. system warned about having too many bad sectors on the disk (65537 reallocated sectors). I tested it with badblocks -svw and no bad block ...
5
votes
2answers
4k views

Howto interpret SMART-Attributes?

I want to estimate the health and the remaining lifetime of my hard drive using SMART (in my case gsmartcontrol). However I don't know how to interpret the attributes. More specifically: Which ...
5
votes
1answer
8k views

SMART: Brand new Western Digital hard-disk showing very high load cycle count

My brand new "WDC WD10EZRX" 1TB Green Hard-disk, SMART log is showing very high load cycle count and it keeps increasing at high rate. What should I do ? Please help me. Edit: Finally I got the ...
5
votes
1answer
302 views

SMART User Capacity and fdisk -l size value differ. Why? Security issue?

I'm just wondering why the size of my drive that smartctl ("User Capacity") shows differ from the value that fdisk -l, dmesg, hdparm shows and differ from the drive specification values from the data ...
5
votes
1answer
184 views

Is it safe to “use” to disk if extended smart check is in progress?

As simple as the title suggests. /dev/sda is a unit from /dev/md127 - RAID1 drive. I'm currently running a test - started a smartctl -t long /dev/sda. Afterwards, I started to copy files over ...
5
votes
2answers
2k views

CHKDSK at boot time on windows 7 without a reason

My new PC with a fresh windows 7 starts a chkdsk during boot time maybe once a week. The chkdsk always finishes with 0 problems and the computer restarts into windows as normal. I always shutdown ...
4
votes
4answers
22k views

Seriousness of a “Smart” disk error. How long will it last?

I have an 1 TB data disk and the bios and Windows are reporting a "Smart" error. At least, I get a Smart event but it doesn't indicate how serious the failure could be. My system is about 6 months ...
4
votes
1answer
494 views

New hard disk shipped with reallocated sectors. Should I worry?

I just bought a new ST3000DM001 (Seagate Barracuda). I ran "badblocks" on it and no problems were found, however CrystalDiskInfo reports "Reallocated Sectors" value of 1. Should I worry? Or is this ...
4
votes
4answers
10k views

hard drive pending sector count

For some reason, my pending sector count to be remapped is unbelievably high (2163 currently). I've seen it go up 20 in one week. But no sectors have been remapped. Dell's computer diagnostics utility ...
4
votes
1answer
310 views

Samsung SSD “Wear_Leveling_Count” meaning

I have Samsung SSD's on my own laptop and on some servers. When I do: smartctl -a /dev/sda | grep 177 I get results that I seems not understand. Here are some examples: # my laptop Samsung SSD ...
4
votes
2answers
667 views

Catastrophic HDD performance degradation

A Seagate Barracuda 500GB hard drive has recently (a few weeks ago) undergone a firmware upgrade. (from CC38 to CC49 firmware version) There were also lightning storms in the area during the last week ...
4
votes
2answers
158 views

Anything I can do about erratic hard disk drive speeds

I don't seem to have very good luck with hard disk drives these days; 3 side-by-side (non-RAID) drives on my machine, replaced 5 drives in the last 4 years. My problem of the moment is that my largest ...
4
votes
3answers
2k views

Tool to test HDD for health?

I've had my HDD replaced, and now my computer is freezing every 1 to 5 minutes for 5 to 10 seconds. Actually, only active applications freeze (but it can be ANY application), usually when I click ...
4
votes
1answer
504 views

HDDs occasionally “click” and dump this error

Every once in a while, my HDDs (6 1TB drives in a Linux md RAID-6 array) make a brief "click" sound, and I get this from dmesg. I don't really have any clue how to start diagnose this, or even how ...
4
votes
1answer
1k views

SSD – smartctl – Status

I have a SAMSUNG SSD 830 Series SSD in my MacBook Pro. In my work, I need to analyse huges amounts of data. I have php scripts that extract the data, build csv sheets, then gnuplot generates hundreds ...
4
votes
3answers
525 views

Long term monitoring of SMART values

I am searching for a free software that runs on Windows 7 and that regularly read the SMART values from my local drives and saves them in a local database for visualization. Such a software would be ...
4
votes
1answer
2k views

What might cause an increase in offline uncorrectable and pending sectors counts on an *idle* drive?

I have a Western Digital Elements Desktop USB-connected hard drive. Basically, it's a glorified package for a WD30EZRX drive. I use it to hold system backups (old now, at that), so there's nothing ...
4
votes
2answers
520 views

What tools are available for understanding the workings of modern storage like SSD and Hard Drives?

My knowledge of storage Hard Drives and SSD is getting out of date and I would like to know what tools are available to read more extensive SMART and other data from modern drives than just "SMART ...
3
votes
4answers
47k views

Disable S.M.A.R.T. in Windows 7?

Before anyone tells me not to disable S.M.A.R.T I've confirmed in the BIOS that the drive is actually reporting it's okay. Windows is misreading whatever reports S.M.A.R.T. status. I would like to ...
3
votes
2answers
837 views

What is SandForce_Internal?

According to palimpsest on my new OCZ Vertex 3 120 GB SSD, S.M.A.R.T. attribute ID 234 is Uncorrectable ECC Count Number of uncorrectable ECC errors I've been watching this value, and it ...
3
votes
1answer
3k views

How do I get a report of HD smart data in FreeBSD 7.x/8.x

Is there a simple way to convince FreeBSD 7.x or 8.x to give me SMART data on hard drives? Preferably from the command line since I normally run these systems as headless servers. I've been spoiled by ...
3
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3answers
12k views

What does Raw Read Error Rate mean in SSD SMART?

I downloaded trial version of HD Tune Pro and I'm using it to benchmark my hard drives. In Health tab of SSD I found Raw Read Error Rate property. What does this property say about my hard drive? ...
3
votes
1answer
359 views

Performance of MSATA to 2.5" SATA adapter

I have recently bought an MSATA SSD as well as an adapter case that fits into my laptop 2.5" SATA bay. I have connected it in two configurations: - first through the adapter to the 2.5" SATA slot - ...
3
votes
1answer
323 views

Do operating systems warn you on SMART failure?

Are there operation systems that actually honor the results of SMART out of the box and tell the user to change the drive? Do they even do SMART test runs on their own?
3
votes
2answers
1k views

How much “Load_cycle_count” can my hard drive hypotethically sustain?

I'm using S.M.A.R.T. to check my hard drives, i recently purchased a used WD Caviar Blue 2.5" and i noticed that the Load_Cycle_Count has already exceeded the 300k mark, which is the maximum that the ...
3
votes
1answer
82 views

Which SMART settings to watch for in SpeedFan?

Unless there's a better solution, I'd like to use SpeedFan to watch hard disks on a host. However, it offers quite a lot of settings in its Configure > Events > If section, such as Raw Read Error ...
3
votes
2answers
7k views

Brand new Seagate HDD has high raw read error rate

I've just purchased a brand new Seagate ST31000524AS 1TB HDD. Manufacture date shows as January 2012 (yes that's as new as new can get), so must be one of the new batches from the post-flood Thailand. ...
3
votes
1answer
2k views

SMART error Offline uncorrectable sectors is this serious?

I install freenas and activated smartd and I got a report of 3 faulty drives. On drive /dev/ad20 (Western digital green 1500gb) Device: /dev/ad20, 4 Offline uncorrectable sectors Device: /dev/ad20, ...
3
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1answer
189 views

Hard disk with trustworthy SMART support

Which hard disk drive do you suggest with trustworthy SMART diagnostics? That is, a hard disk that can truthfully report sector reallocations and other pre-failure indicators. I'm asking this because ...