[CentOS] info about hdds in raid
John R Pierce
pierce at hogranch.com
Tue Nov 3 03:14:33 UTC 2009
Robert Heller wrote:
> Use '/sbin/mdadm --detail /dev/md<mumble>' and note the drive name
> (/dev/sd<mumble> for SCSI or SATA, and /dev/hd<mumble> for IDE).
>
> Then '/usr/sbin/smartctl -A <drive name from mdadm's listing>'
>
> /usr/sbin/smartctl will give you lots of information. Near the
> beginning is the serial number.
>
> You *should* be running smartd and you *should* be enabling all of your
> disks to be monitored with smartd.
>
# smartctl -A /dev/sda
smartctl version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8
Bruce Allen
Home page is http://smartmontools.sourceforge.net/
Current Drive Temperature: 27 C
Drive Trip Temperature: 68 C
Elements in grown defect list: 0
Vendor (Seagate) cache information
Blocks sent to initiator = 3037412440
Blocks received from initiator = 3755531488
Blocks read from cache and sent to initiator = 861510971
Number of read and write commands whose size <= segment size =
3430618702
Number of read and write commands whose size > segment size = 73308725
Vendor (Seagate/Hitachi) factory information
number of hours powered up = 33496.25
number of minutes until next internal SMART test = 12
doesn't seem to say anything about serial to me.
OH! -i is required.
# smartctl -i -A /dev/sda
smartctl version 5.38 [i686-redhat-linux-gnu] Copyright (C) 2002-8
Bruce Allen
Home page is http://smartmontools.sourceforge.net/
Device: SEAGATE ST373207LC Version: 0003
Serial number: 3XXXXXXXXXXXXXXXXXXXX
Device type: disk
Transport protocol: Parallel SCSI (SPI-4)
Local Time is: Mon Nov 2 19:12:25 2009 PST
Device supports SMART and is Enabled
Temperature Warning Enabled
Current Drive Temperature: 27 C
Drive Trip Temperature: 68 C
Elements in grown defect list: 0
Vendor (Seagate) cache information
Blocks sent to initiator = 3037412672
Blocks received from initiator = 3755693456
Blocks read from cache and sent to initiator = 861510971
Number of read and write commands whose size <= segment size =
3430623987
Number of read and write commands whose size > segment size = 73308751
Vendor (Seagate/Hitachi) factory information
number of hours powered up = 33496.28
number of minutes until next internal SMART test = 10
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