10-08-2007, 10:03 AM
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| Junior Member | | Join Date: Sep 2009
Posts: 0
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 Re: Failure of brand new drive... possibly due to staggered spinup?
"Maxim S. Shatskih" wrote in message news:f3r86v$2dgt$1@news.mtu.ru
> > The whole thing is kind of amazing: toggling the "power up in standby"
> > feature caused the BIOS of *three* desktop computers to pronounce the
> > drive dead, and to freeze when booting.
>
> A clear sign of bad industry support of this (S)ATA feature, especially
> for laptop drives.
>
> For SCSI drives, their SCSI BIOSes can send START STOP UNIT (the
> similar SCSI command) at boot for very long times, and the drive can be
> mechanically jumpered to "no spin at powerup".
> This is because spinning up a SCSI drive imposes significant load to the PSU,
> so, it is a good idea to delay its spinup until after the BIOS self-tests,
That is utter nonsense.
> while the (S)ATA drives will be spinned up and power up. This reduces the PSU
> power load.
Like there is any difference with sata drives spinning up.
>
> But this is relevant for "heavy" SCSI drives only,
Utterly clueless.
> not relevant for a laptop drive.
> That's why - IMHO - the industry support for a feature is bad on (S)ATA.
Waffle.
>
> > * why isn't this feature marked as DANGEROUS in the hdparm
> > manual :-) ?
>
> Hey, it's open source, mark yourself and tell the maintainer :-)
>
> > * is there a way to issue raw commands to a drive from Linux (maybe
> > via /sys) without recompiling the kernel?
>
> Try FreeBSD and "camcontrol".
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