Questions tagged [smart]

Self-Monitoring, Analysis and Reporting Technology

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(LVM) Moving data to a different physical volume within the same logical volume

I have a logical volume called storage. It contains two ~1TB physical volumes: /dev/sdc and /dev/sdd. smartctl -a /dev/sdd informs me that /dev/sdd is failing. I can still read data off it and I have ...
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Drive failing SMART self-test, but rewriting the affected server does not reallocate it

I have a drive (a Seagate Momentus 7200.4 2.5" 7200 rpm drive of 500 GB, device model ST9500420AS) which is behaving strangely. I know the answer is probably just "throw it away" but I'm curious to ...
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smartctl selftest read failure an 4 drives (Raid6) at the same LBA

I just repurposed 4 drives that where out of use for a long time and installed arch linux (raw discs -> mdadm -> dmcrypt -> LVM -> ext4) on them. While creating the LVM i got "ATA read errors" for ...
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59 views

Does this SMART report indicate a bad disk?

On a remote server, I have 2x3TB drives set in raid 0 with SLI raid card. I tried to run SMART tests to see if drives have a problem because server become unresponsive and one drive had to be put back ...
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103 views

HDD spins up spuriously for no reason

I have four HDDs in my NAS. Three (Western Digital, all the same model) are put in standby mode (spin down) by hd-idle and they stay in standby until I use them. The reason I use hd-idle and not the ...
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smartd - Reschedule “missed” SMART checks when machine is up

I have a machine (NAS) that is not up/powered all the time. The times it is varies quite wildly acutally. I want smartd to perform some checks (HDD self-tests, etc.) at least a couple of times a ...
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142 views

HDD SMART interpretation

I need your opinion if the drive below is failing. When I run "smartctl -a /dev/sda -d megaraid,1", 2 errors are posted at the end of the output, stating "Error: WP at LBA". I don't see anything ...
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19 views

smartctl on Linux, does not report certain S.M.A.R.T. values

I am hearing occassional (1/hour) clicking or switching sound ("tic-tic" and not "tic") from my computer and try to investigate the health of the hard-drives first (mechanical WDC, 4 years old). I am ...
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76 views

UDMA CRC SMART Reporting, Alternative Software/logs for Diag

* Update * As it turns out the human readable portion of SMART reporting numbers is pretty useless for the UDMA CRC errors and you just have to track the RAW value. After flushing through over a dozen ...
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91 views

Detect if hard drive SMART data has been reset

I want to detect if a hard drive's SMART data has been reset, e.g. by an unscrupulous vendor selling refurbished drives as new. Google shows page after page of results about techniques and tools for ...
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84 views

S.M.A.R.T. Attributes from OWC Mercury Rack Pro

I'm having difficulty getting SMART Attributes from drives in an OWC Mercury Rack Pro. I can successfully get all the drive info, but I get nothing past the START OF READ SMART DATA SECTION. It is ...
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63 views

How to derive bytes written from SMART's host_write_commands?

Using either smartctl 7.0 or nvme 1.7, I get the following data from the SMART log data_units_written : 350,371,149 host_write_commands : 2,974,115,785 Via smartctl, ...
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362 views

Unit for Total_LBAs_Written in SMART data

I have 3 machines with disks (actually, SSDs) in RAID1, purposely with different brands in an attempt to make it improbable to loose them both simultaneously due to wear-out. They are functional. ...
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187 views

SMART Extended self-test routine changes duration

I purchased a new Western Digital Elements 3TB a couple of weeks ago. As usual, I did all SMART tests, then badblocks, then SMART tests again. When I first got the drive, SMART showed this: Short ...
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70 views

Something's wrong w Fedora Core 31 gnome-disks; drops SMART data for unknown reason, THEN doesn't show available disks at all

As discussed here, I've been working to load a great many smaller disks' data to a larger storage repository. The system in question is Fedora Core Server 31 - out just a week ago or less. Of course, ...
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22 views

Wear levelling score on smartctl does not match TBW claim

I have a small secondary Toshiba RC100 SSD with specified endurance of 120 TB. smartctl reports data units written of about 3% of that. But the wear levelling count(or "Percentage used") reports at ...
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47 views

How to collect historical data using smartctl?

I'm trying to do some analysis on the SMART stats of disk drives. Unfortunately, I'm not collecting/storing smart stats data daily for the analysis. I will be writing some procedure to collect it from ...
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669 views

SMART - Understanding Offline Data Collection

I have two Kingston A400 120GB SSD as cache in a Synology NAS, which don't seem to support automatic offline data collection. # smartctl -d sat -c /dev/sdc | grep -i "Auto Offline data collection" ...
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144 views

Is there ready S.M.A.R.T monitoring toolkit for NVME disks (exporter,source,board)?

I already found node_exporter and grafana board for HDD S.M.A.R.T. Can You please get advice or url for ready exporter or other toolkit? I'm trying to wrote my own "messy" text exporter for ...
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Does calling storcli on a hard disk drive induce read/write latency?

I am calling storcli /c0/eall/sall show all on some 4TB Western Digital hard disk drives to get their SMART code status. When I do this it causes significant write latency to the disks, is that ...
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374 views

mdadm RAID5 random read errors. Dying disk?

First the long story: I have a RAID5 with mdadm on Debian 9. The Raid has 5 Disks, each 4TB of size. 4 of them are HGST Deskstar NAS, and one that came later is a Toshiba N300 NAS. In the past days I ...
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483 views

Tests with smartctl vs smartd

I am looking into setting up smartmontools. I'd like to control when the tests run. I was thinking of running: /usr/sbin/smartctl --test=short /dev/sdX (every week) /usr/sbin/smartctl --test=long /...
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390 views

OfflineUncorrectableSector & CurrentPendingSector emails - what should I do?

Running Centos 7: I've just done a yum update followed by a reboot on one of my servers, and when it came back up I got two emails: First: OfflineUncorrectableSector Device: /dev/sdb [SAT], 28 ...
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157 views

How can I change a SMART attribute value?

I have a drive which has signaled a SMART error (Current_Pending_Sector is 1) and I've run a "long offline test" against the drive which reported zero errors. This was after running a "short offline ...
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123 views

Is this disk about to die?

I have a WD Red 4 TB disk (WD40EFRX-68WT0N0, firmware 82.00A82) that is occasionally showing uncorrectable read errors in the SMART error log, e.g.: Error 43 [18] occurred at disk power-on lifetime: ...
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65 views

G-sense errors in new disks

I have a Synology DiskStation. It used to contain 3xTB drives, I now have 2xTB, 2x8TB drives. The old drives were "Seagate NAS" drives, the new ones are from the same(?) series, named "Ironwolf". The ...
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2k views

SMART error (CurrentPendingSector) detected on host

Smart is reporting the following error each day one one of my data centre server SSDs: This message was generated by the smartd daemon running on: host name: x DNS domain: x The following ...
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400 views

Current Pending Sector S.M.A.R.T

Hello I have a Linux Server mounted with BTRFS in RAID-1 and I would like that someone more expert than me could solve my doubts. I have 3 HDD of 6TB each, in one of them every so often smartd detects ...
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122 views

RAID 0 - disk failure probability - need help to verifying my experience [closed]

I have HP DL380 G7, with 8x300GB disks. The disks are not HP genuine, they are OEM. I configured RAID 0 for all disks, as i need speed and i have backup plans. within 1 month: 1 Disk threw SMART ...
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1answer
2k views

smartctl drive Media_Wearout_Indicator values outside normal bounds

I was attempting to put some monitoring in place to track the health of my SSD RAID on my production database. Normally I would expect a value of between 100 (new) and 0 (dead) for the ...
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2k views

Troubleshooting `Buffer I/O error` on software-raid/md-device

I've got a RAID-5 mdadm array that reliably causes Buffer I/O error on dev md0, logical block 1598030208, async page read to be written do dmesg when reading that block. Of course, the read also ...
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266 views

Smartd supress/change level for FAILURE PREDICTION THRESHOLD EXCEEDED

I'm using smartd to monitor drive health It started compaining about FAILURE PREDICTION THRESHOLD EXCEEDED for one drive, but I extensively tested that drive and it's fully functional That drive is ...
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S.M.A.R.T Power_On_Hours wrap around with Seagate Baracuda?

I have a well used Seagate Barracuda 7200.9 with 80 GB. The smart report shows Power_On_Hours 0x0032 094 094 000 Old_age Always - 5646 But that can't be right. ...
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1k views

SATA disks being identified as SCSI

I have two identical servers with same hardware and cloned Linux OS. They both have Supermicro HBA AOC-S3008L. Yet one server identifies SATA disks as SCSI while the other one correctly identifies ...
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182 views

HGST He8 S.M.A.R.T. test extended-self test polling time variability

I recently received a batch of 6 brand new HGST He8 drives and when running an initial long self-test on them, I noticed that the extended self-test routine recommended polling time exhibit a very ...
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1k views

How bad are Hardware_ECC_Recovered, Seek_Error_rate and Raw_read_error_rate for disks?

As I bought a second-hand like-new 10TB disk on Amazon for back-up purposes, I did a smart read which showed the disk had barely been used. The smart info was very confusing though, as Western ...
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498 views

ZFS keeps repairing the same disk when scrubbing - what does that mean?

I have a ZFS pool comprised of 6 disk, arranged in 3 stripped mirrors. The server is a Supermicro X11SSM-F with a Xeon CPU, 32 GB of ECC RAM running Ubuntu 17.04. I'm using 2 Icy Dock MB154SP-B to ...
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181 views

Filesystem set to read-only mode, which drive is faulty?

I woke up today to find out my CentOS server's filesystem has been set to read-only mode. I'm running RAID 1 on this server. # mkdir test mkdir: cannot create directory `test': Read-only file system ...
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444 views

How to interpret failure data provided by SMART and zfs

In a small server system, I have a zfs file system with a mirrored pair of consumer grade drives (Seagate Barracudas). Recently, during a periodic scrub operation the following result was given: ...
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1k views

Raw Read Error Rate for Intel SSDs

I've provisioned a few servers with a bunch of Intel S3610's and I'm a bit concerned about the "Raw Read Error Rate" values. The tools shows all drives as healthy and there are no other errors as ...
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1k views

smart long test - what is the performance impact on busy server?

I have a busy server with a RAID 1 setup. The application (runs in PHP) is very read/write intensive to the database (MariaDB). A cronjob runs smartctl short test every day and checks the output of ...
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68 views

Trouble Getting the smartd Attributes of a Western Digital 4TB HHD

I am trying to get the smartd attributes of a Western Digital 4TB HHD model WD4001FYYG-01SL3. I would like to get the following attributes: SMART 5 Reallocated Sectors Count SMART 187 Reported ...
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251 views

Out-of-order lifetimes in SMART self-test log

I was peeking at a server's SMART log, and noticed this (emphasis mine): SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) ...
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385 views

How to calculate /get the UBER value from S.M.A.R.T measurements in SSDs

UBER is a metric for the rate of occurrence of data errors, equal to the number of data errors per bits read over the entire lifetime of an SSD. Mathematically: The numerator is the total count of ...
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415 views

S.M.A.R.T. Errors of previous hdd or need to replace?

I ran s.m.a.r.t and came up with some weird errors, although the disk is pretty fresh Power_On_Minutes 427h+41m I'm curious, are these the errors of previous hdd? Error 1 occurred at disk power-on ...
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280 views

Does “smartctl -H or -all” run anything against disks or just poll data?

I am setting up Smart monitoring currently and I had a question regarding the command smartctl -H /dev/sda === START OF READ SMART DATA SECTION === SMART Health Status: OK Does this actually run ...
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1k views

In smartctl, what does means “Percentage used endurance indicator too short”?

I use Bacula to make backups. When i use smartctl # smartctl -H -l error /dev/st0 smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-431.1.2.el6.x86_64] (local build) Copyright (C) 2002-12 by Bruce ...
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235 views

Weird smartctl output. Is my disk in danger?

I have a disk, that gets me kinda weird smartctl output. I have never seen such large nubmbers on other disks. Does anyone now how to interpret these ? Is the disk likely to be faulty ? SMART ...
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2k views

S.M.A.R.T attribute saying FAILING_NOW

I have the following SMART attribut staying at FAILING_NOW, but with a raw value of just 1. Is it not suposed to change to IN_THE_PAST later ? ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH ...
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452 views

SMART vs badblocks, who is right?

I have and semi-old hdd (magnetic one, not ssd) and I intended to use it as system drive for my new NAS. So I've run SMART selftest on it and it ended with status "Completed: read failure". However, ...