Questions tagged [smart]
Self-Monitoring, Analysis and Reporting Technology
211
questions
42
votes
6
answers
7k
views
Is my Hard Drive Failing?
I just tried to run a test on my hdd and it doesn't want to complete a self test. Here is the result:
smartctl --attributes --log=selftest /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-...
- 423
37
votes
2
answers
23k
views
What does SMART testing do and how does it work?
man smartctl states (SNIPPED for brevity):
The first category, called "online" testing. The second category of testing is called "offline" testing. Normally, the disk will ...
user176193
30
votes
5
answers
44k
views
Do SSDs support SMART?
S.M.A.R.T. (for Self-Monitoring Analysis and Reporting Technology) is a wonderful technology to detect hard drive failure before it really happens.
But is S.M.A.R.T. relevant for SSDs?
- 4,164
24
votes
6
answers
29k
views
How do I easily repair a single unreadable block on a Linux disk?
My Linux system has started throwing SMART errors in the syslog. I tracked it down and believe the problem is a single block on the disk. How do I go about easily getting the disk to reallocate that ...
- 363
24
votes
5
answers
19k
views
How are SMART selftests related to badblocks?
The smartctl tool allows initiating a long self-test (smartctl -t long /dev/sda). However there's also badblocks that I can run on a drive. How are the two related? If badblocks detects bad blocks, ...
- 2,262
20
votes
6
answers
38k
views
Should I be concerned about a high SMART Hardware_ECC_Recovered value?
I got such a message in /var/log/messages:
Jun 25 06:29:27 server.ru smartd[4477]: Device: /dev/sda, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 46 to 47
#smartctl -a /dev/sda:
...
- 2,933
20
votes
1
answer
30k
views
Is smartd properly configured to send alerts by email?
I just configured a Debian server as follows
apt-get install smartmontools
vi /etc/default/smartmontools - and here uncommented these 2 lines
# uncomment to start smartd on system startup
start_smartd=...
- 1,821
20
votes
5
answers
42k
views
Understanding smartctl -a output
I have 6 drives in a NAS box. Two of them are Seagates, and they return high RAW_VALUES for errors; see below.
My other drives show far lower values.
Is this cause for alarm? Or just the way ...
- 969
20
votes
1
answer
5k
views
Why does unpartitioned Hitachi HDS5C3020 drive start consuming 50% more power 15 minutes after boot?
In a Debian 6.0.6 system there are 74 pieces of 2TB Toshiba DT01ABA200 drives. These drives are identified as Hitachi HDS5C3020BLE630 drives running firmware revision MZ4OAAB0. 64 Drives attached via ...
- 994
19
votes
7
answers
15k
views
How many SMART sector reallocations indicate problems?
I have a NAS appliance that is just over a month old. It is configured to email me alerts generated from the hard drives' SMART data. After one day, one of the hard drives reported that a sector had ...
- 661
17
votes
2
answers
59k
views
Cause of Current Pending Sector and Offline Uncorrectable increase and then decrease to zero
Over the course of a week, for a 3TB Seagate drive (ST3000DM001-1CH166), smartd reported a slowly increasing number of offline uncorrectable and currently unreadable (pending) sectors, then a ...
- 503
16
votes
5
answers
46k
views
Does this SMART selftest indicate a failing drive?
I'm wondering if the results of this SMART selftest indicate a failing drive, this is the only drive that comes up with 'completed: read failure' in the results.
# smartctl -l selftest /dev/sde
...
- 442
16
votes
3
answers
931
views
Is S.M.A.R.T. smart to use?
A few years ago I was told to avoid S.M.A.R.T. like the plague. The reasoning was that the stress the testing puts on the drive will actually cause it to fail.
Is this still the case? If not, what is ...
- 2,977
16
votes
5
answers
33k
views
How frequently should SMART be run on a disk?
I'm a software engineer, not a system admin, so if this question seems a little green you know why! ;-)
As a personal project I've been working on a home NAS system using FreeNAS. One of the features ...
- 295
15
votes
2
answers
35k
views
is UNC S.M.A.R.T. Error serious? need to take action?
I have a 300G Western Digital Raptor, recently showing UNC SMART, wondering anyone who has experience knows should I replace it and get warranty form WD?
Details of smartctl -a as follows:
smartctl ...
- 768
14
votes
4
answers
13k
views
Quick method to determine SSD drive health?
I have an Intel X-25M drive that was marked "failed" twice in a ZFS storage array, as noted here. However, after removing the drive, it seems to to mount, read and write in other computers (Mac, PC, ...
- 198k
12
votes
1
answer
8k
views
what's the purpose of SMART's captive test?
When testing hard disk with SMART (for instance using smartctl tool) I can do tests (for instance long test) in two modes: captive (also called foreground mode) or non captive. Non captive mode is ...
- 1,157
11
votes
2
answers
3k
views
How do you monitor SSD wear in Windows when the drives are presented as 'generic' devices?
Under Linux, we can monitor SSD wear fairly easily with smartmontools whether the drive is presented as a normal block device or a generic device (which happens when the drive has been hardware RAIDed ...
- 39.7k
9
votes
5
answers
16k
views
How reliable is HDD SMART data?
Based on SMART data, you can judge the health of a disk, at least that is the idea. If I, for instance, run sudo smartctl -H /dev/sda on my ArchLinux laptop, it says that the hard drive passed the ...
- 93
9
votes
2
answers
5k
views
S.M.A.R.T. lifetime hours resetting to zero
I use S.M.A.R.T. selftest to test all of my hard drives and SSDs. I run a short test daily and a long test monthly.
One of my SSD is showing odd behavior in that the lifetime hours seem to reset back ...
- 240
8
votes
7
answers
41k
views
how to use a disk with high reallocated sector count?
After 3 years in 24x7 service a 1TB Seagate Barracuda ES.2 enterprise drive is showing signs of failure. S.M.A.R.T. reallocated sector count is high.
Wikipedia article suggests that the drive can ...
- 2,326
8
votes
6
answers
6k
views
SMART warns me but I don't trust it
I've got a server with four Samsung hard drives. All drives are the same model and have been bought together. The drives are SAMSUNG HE753LJ with firmware 1AA01113.
I'm getting SMART errors but I ...
- 1,366
8
votes
2
answers
2k
views
SMART shows unreadble sectors, btrfs scrubs are clean - which is correct?
I have a pair of disks in RAID1 formatted with btrfs.
The disks go through periodic scrubbing and I get notified with the results. They've been running great for about 2-3 years with no issues.
...
- 165
8
votes
3
answers
10k
views
Best Nagios plugin for SMARTd / smartmontools?
I've installed SMARTd / smartmontools on a server and I want to monitor it over Nagios. However on Monitoring Exchange, I see several plugins
http://www.monitoringexchange.org/cgi-bin/page.cgi?g=2897....
- 32.3k
8
votes
2
answers
7k
views
powershell: How to check if S.M.A.R.T is enabled on remote machines
I was attempting to get disk info of remote machines, including whether or not SMART is enabled on the drive by using the win32_diskdrive class.
This is trickier than I thought. While it's easy ...
- 4,263
8
votes
3
answers
8k
views
Is there a way to share S.M.A.R.T. data over SNMP?
Is there a way to share S.M.A.R.T. data over SNMP? I'd like to be able to make cacti graphs of it and hook it up to Nagios.
What I want to do is be able to get some statistics on my harddisks ...
- 32.3k
7
votes
2
answers
3k
views
How to find files affected by reallocated sectors?
I have a Western Digital RE4 1.5TB that has just reallocated 56 sectors.
Reallocated Sectors Count,140,193,193,OK,56,0,Enabled
I want to know if it is possible to find out which are the files ...
- 181
7
votes
2
answers
8k
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.
They ...
- 432
7
votes
1
answer
13k
views
SMART "power on hours" attribute for different HDD manufacturers
Is there a table of how to interpret the SMART attribute "power on hours" depending on the HDD manufacturer? Some of them use hours, some minutes or even seconds...
- 189
7
votes
0
answers
7k
views
PERC MegaRAID S.M.A.R.T. Status is not matching smartctl's - looking for clues what's wrong with the HDD
I'm getting strange SMART error from MegaCli on Dell R720xd and PERC H710P with five 4Tb SATA drives in RAID5
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL
gives me some "Failure Seq Event Number"
...
- 483
6
votes
3
answers
28k
views
smartctl & megaraid: how to find the right device node for an adapter #
I can list physical drives on all megaraid adapters using:
megacli -PDList -aALL
This will display an adapter # for each adapter, and then list the physical drives attached to them.
The individual ...
- 379
6
votes
2
answers
18k
views
S.M.A.R.T. (smart) attribute 190 failing on Seagate Backup Plus 4TB drive
I am using a Seagate Backup Plus 4TB drive attached over USB to a Linux box.
The drive model is ST4000DX000-1CL160.
When checking the S.M.A.R.T. attributes I get:
$ sudo smartctl -a -d sat /dev/...
- 267
6
votes
2
answers
792
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 ...
- 63
6
votes
2
answers
3k
views
Munin's smart plugin keeps reporting an error in the past because of the exit code
My hosting provider has inserted a hard drive into my server which seems to have had some sort of error in the past but a full offline smart check showed that everything is (about) ok at the moment. ...
- 338
6
votes
1
answer
3k
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 ...
- 633
6
votes
1
answer
5k
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"
...
- 190
5
votes
2
answers
8k
views
The best nagios plugin for SMART? [closed]
I've tried the best plugin for nagios to SMART monitoring. There are some, but only monitoring temperature. But with smartctl we can find more data. Do you have some better plugins with all data from ...
- 187
5
votes
2
answers
7k
views
Is my hard drive about to die?
I have two hard drives set up as a RAID 1 array on my server (Linux, software RAID using mdadm) and one of them just got me this "present" in syslog:
Nov 23 02:05:29 h2 kernel: [7305215.338153] ata1....
- 224
5
votes
1
answer
10k
views
1TB Seagate Barracuda ST31000528AS - Unexpected "Offline uncorrectable sectors"
I bought a 1TB Seagate Barracuda 7200.12 - ST31000528AS drive about 18 months ago because it had a 5-year warranty, and used it alongside a Samsung Spinpoint under Ubuntu Server as one half of a ...
- 231
5
votes
2
answers
4k
views
Health Tests on NVMe
On the servers I have, with HDD or SSD, I have a cron that periodically runs:
/usr/sbin/smartctl --test=short/long /dev/sd1
(for each disk)
While it runs, it just looks at the output of /usr/sbin/...
- 633
5
votes
1
answer
2k
views
HDD is acting up, but S.M.A.R.T says everything is fine
Before I begin, a quick disclaimer. I'm basically a developer forced into a sysadmin role by circumstances, so I apologize in advance if I say something stupid or seem like I don't know what I'm doing....
- 248
5
votes
1
answer
2k
views
HP Proliant G6 reporting failed SSD drive - alternative strategies for monitoring?
I would like to get your feedback about a controversial situation I found myself in some days ago. I was tasked to use a HP Proliant G6 for development purposes with 2 new (< 2 months, never used ...
- 182
5
votes
3
answers
4k
views
Confirm disk is broken when it passes all diagnostics
I have a system with a potentially broken disk, but the disk passes all manner of diagnostics. I have been unable to confirm that the disk is broken. What are my options?
I could just replace the ...
- 8,204
5
votes
2
answers
21k
views
Understanding the S.M.A.R.T. values from a Synology 1812+ device
I have a Synology 1812+ NAS with 8 3TB drives configured as RAID 5. Its running DSM 4.1. It was purchased to replace USB drives, consolidate storage and short term OS X backups using Time Machine. ...
- 462
5
votes
0
answers
1k
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 ...
- 1,835
5
votes
0
answers
5k
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 ...
- 151
4
votes
3
answers
8k
views
What's the top normal S.M.A.R.T. temperature for HGST Helium Ultrastar 8TB 7200 RPM SAS 12Gb/s enterprise drives?
I've just received new Dell R730xd 2U server with faceplate 12 * 3.5" drive bays + 4 * 3.5" mid-body tray, located above RAM modules & CPUs. I've plugged 16 * HGST Helium 8Tb 7200 RPM SAS 12Gb/s ...
- 483
4
votes
2
answers
4k
views
Why are SMART error rates going down?
I have a hard drive that's part of a Linux software raid5 array. SMART has reported that its multi_zone_error_rate was 0, then 1, then 3. So I figured I better start backing up more frequently and ...
user13328
4
votes
2
answers
279
views
Physical/portable Hard drive tester/diagnostics tool [closed]
Are there any tools that I can plug into a hard drive and perform diagnostics such as displaying if there are SMART errors? I work with a lot of commodity hardware and need to check if some of the ...
- 433
4
votes
1
answer
846
views
Smartctl reporting read failure for block -- How to mark as 'don't use'?
On one of my hard disc I've got a bad test result from smart like this:
# 1 Extended offline Completed: read failure 90% 19889 128652505
# 2 Short offline Completed: ...
- 573