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Date: Fri, 24 Dec 2010 14:01:29 +0100 From: Krzysztof Halasa <khc@...waw.pl> To: Rogier Wolff <R.E.Wolff@...Wizard.nl> Cc: Greg Freemyer <greg.freemyer@...il.com>, Bruno Prémont <bonbons@...ux-vserver.org>, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: Slow disks. Rogier Wolff <R.E.Wolff@...Wizard.nl> writes: > ata6.00: 1953525168 sectors, multi 16: LBA48 NCQ (depth 0/32) > scsi 5:0:0:0: Direct-Access ATA WDC WD10EARS-00Y 80.0 PQ: 0 ANSI: 5 > sd 2:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/931 > GiB) WD10EARS are "green" drives, 5400 rpm. They aren't designed exactly for speed. Never used them, though. No NCQ? Sil 3114 doesn't support of course. ICH7 (without letters) doesn't do AHCI either IIRC. > 9 Power_On_Hours 0x0032 091 091 000 Old_age > Always - 7189 > 193 Load_Cycle_Count 0x0032 164 164 000 Old_age Always > - 109955 Hmm, some agressive power savings? May reduce performance significantly. I'd disable all this "green" crap first. > Where it seems that WD simply says not to use these drives in a RAID. That smells like "don't use them in any serious application". I'd start with a RAID-1 or RAID-10 if possible. -- Krzysztof Halasa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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