linuxaudio.org

2010/12/24 Jörn Nettingsmeier :

quoted text
> On 12/24/2010 07:03 PM, Mark Knecht wrote:

>> 2010/12/24 Jörn Nettingsmeier :

>>> 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.

>

Ah, certainly. Must be true if the heads aren't parked at all. Is that

what that firmware does, or does it just slow down how often it's

parked?
>> Reaching its lifetime would be a good thing.

quoted text
>

>>> 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.

That's what I remembered also but the number I posted in replying to

Jouni was 269117 and the Power On Hours counter currently says 7535

which is 313 days or around 10 months.
269117 / 7535 is about 35/hour or roughly 2 minutes.
I'm running Gentoo and have no recollection of making any changes or

ever finding a setting that slowed it down significantly but I admit I

didn't try very hard. I'm just doing backups and figured I'd swap in

another drive when it gets up too high.
I have a bunch of these drives never opened as I couldn't return them,

it was too late, and I never used them so far.
- Mark

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