[LAU] Which SATA drive? Size? [Was: Re: partition table]

[Jörn Nettingsmeier]

On 12/24/2010 07:03 PM, Mark Knecht wrote:
> 2010/12/24 Jörn Nettingsmeier <nettings at folkwang-hochschule.de>:
>> the drive is a lot faster and will reach its expected lifetime, hopefully.
>
> Is it? In what way? Something like hdparm -tT or something else?

sorry, no. sloppy wording. it reacts faster to intermittent requests,
because the heads are already flying and don't have to be un-parked.
throughput is of course the same.

> Reaching its lifetime would be a good thing.

>> no. under linux, power consumption will actually go down, since the
>> constant head parking and unparking is avoided. if you implement laptop
>> mode with very large dirty buffers, you might actually reach a point
>> where there's actual benefit to this "green" feature, but i have a very
>> strong suspicion it's just a stupid greenwashing feature they came up
>> with (without expecting much themselves), because marketing wanted it.
>>
> 
> I think that really depends on how long it's left asleep. At this 2
> minute rate I'm seeing I suspect it lowers power to put it to sleep
> but I don't know.

probably. but i guess you are already using "laptop mode with longer
sync times. i'm sure i saw it wake up and park more often, a few times
per minute iirc.