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Re: SATA disc spindown



On Fri, 25 Nov 2011 15:14:31 +0000, Ramon Hofer wrote:


Maybe this is important:
I use Squeeze, 2.6.32-5-amd64, hdparm v9.32, the drive sdc is a WDC
WD20EARS-00MVWB0 and the mainboard an ASUS P7P55D.



It's very good you mention this - the WD Green series is a pain in the ass for linux users ... please have a look at the following two postings about problems with the green series operating under linux:

http://wiki.ubuntuusers.de/WD_IntelliPark
http://www.gossamer-threads.com/lists/mythtv/users/479998#479998

In order to avoid high load cycle counts it is highly recommended to disable intellipark using WDIDLE3.exe, after that your load cycle counts should not raise anymore and the traditional ata commands like hdparm -S /dev/<device> 6 should work again, thus switch off your green drive after 30 seconds (<int> is a multiple of 5 accdoring to the hdparm manpage)

Please take care to only use capital "-S" parameter, not "-s" ... otherwise it could mess up the device firmware.

Regards

Lou


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