John H wrote in message
...
Folkert Rienstra wrote
Marc de Vries wrote
John H. wrote
Marc de Vries wrote

At the moment the 7K250 is easily the fastest 7200 rpm disk that you
can buy. It also very quiet. (Quite a large difference to my DiamonMax
Plus9 disks)

What kind of sound does it make when moving the heads to prevent heat
buildup? Anything like the 1-2 second sound every 10 minutes for the
180GXP?

Don't know. I haven't heard that sound on my disk yet. (Installed it
about two weeks ago)

You would have been very much aware of it the first day if the 7K250 was
making the same sound as the 180GXP. Like I said, for the 180GXP it's a
(very audible) 1 or 2 second sound every 10 minutes.

I know that 180GXP sound. (I also owned one of those)
It's a good thing I knew the 180GXP makes strange noise before I
bought one, or I would have been very worried when I first heard it
:-)

But my 7K250 hasn't make any noise like that.

Maybe it still moves the heads to prevent heat buildup,
but if so, it does it without making noise now.

Of course it does. And they always have been.

I don't get the point of your two posts.

He's deliberately cryptic quite a bit of the time.

Its one way of trolling.

You took the bait.

Are you saying the 180GXP sounds isn't to prevent heat build-up?

No, he's saying that specific steps have been taken to
prevent the heads sitting on the one cylinder for long
times, so you dont get local heating, for years now.

He's just saying that while the 180GXP is audible when
it moves the heads around to prevent that, the 7K250 isnt.

If not, what's the drive doing for that 1-2 seconds,

Preventing local heat buildup when
the heads arent doing anything.

and why don't other drives need to do it?

They do. They just dont make that stupid
noise when doing that that the 180GXP does.

The fool that 'designed' the 180GXP to do it so
noisily that the user wonders if its normal should
have been taken out the back and shot.

Maybe he has and thats why the 7K250 does it quietly.

This is good to know. Maybe IBM/Hitachi drives are worth buying again.

The 7K250 is certainly my first choice at the moment.