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 Post subject: How to turn off background media scan?
PostPosted: November 5th, 2017, 7:39 
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Joined: November 5th, 2017, 6:36
Posts: 2
Location: AUSTRALIA
Hi, I recently acquired some Seagate savvio 10k.5 ST9900805SS and constellation ES.2 ST33000650SS sas drives, with EMC firmware. After reformatting to 512B sector size I can use them in windows. However the drives are actually much noisier at idle than load, they are constantly seeking and scrubbing it seems. I believe this may have something to do with the constant background media scans, so what can I do to turn off that feature?


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 Post subject: Re: How to turn off background media scan?
PostPosted: November 5th, 2017, 21:08 
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Joined: November 5th, 2017, 6:36
Posts: 2
Location: AUSTRALIA
Figured it out reading the sdparm documentation. For others who may be interested, it is
sdparm --clear=EN_BMS --save /dev/sdX


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 Post subject: Re: How to turn off background media scan?
PostPosted: November 6th, 2017, 15:11 
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Joined: September 8th, 2009, 18:21
Posts: 13665
Location: Australia
Thanks for the heads up.

_________________
A backup a day keeps DR away.


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 Post subject: Re: How to turn off background media scan?
PostPosted: September 18th, 2021, 12:30 
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Joined: September 15th, 2021, 6:34
Posts: 4
Location: Poland
There is an alternative. A tool in smartmontools, which is able to turn the BMS on/off - smartctl.
First check if it is supported by the drive. For sda run:
Code:
smartctl /dev/sda -c

and check if output states "Auto Offline data collection on/off support.". If it's supported run:
Code:
smartctl /dev/sda --offlineauto=off

Man page: https://www.smartmontools.org/browser/trunk/smartmontools/smartctl.8.in

As background media scans will no longer be performed run immediate offline scans and longDST on a regular basis.
Code:
smartctl -t offline /dev/sda
smartctl -t long /dev/sda


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