SReichert schrieb:
... hat nix gebracht... er tut es nun schon wieder... gut 10 min lang. an-aus---an-aus.... während ich damit arbeite. Das darf doch nicht war sein...
Hat keiner ne lösung?
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Posted: Thu Mar 17, 2005 11:29 pm
Firmware Update coming from Seagate Most Mac Minis (all that we've received reports concerning so far) use Seagate hard 2.5-inch hard drives. We've now received word from Seagate that an upcoming firmware revision will eliminate the problem, and that the noise does not -- in their estimation -- represent a defect in quality or sign of failure for affected drives.
John Paulsen Senior Manager for Corporate Communications at Seagate tells MacFixIt:
"This is an issue of sound only -- contrary to (a portion of your report), there is no relationship between this sound and drive reliability or failure. This issue can occur with other hard drive brands as well, and only occurs with certain PC models. Seagate has a new firmware code for our drives that eliminates the occurrence of the sound, currently pending implementation into systems."
Most noises the result of parking heads or thermal calibration Most instances of this issue are caused by two non-serious factors: what could be considered excessive parking of the hard drive heads (a technique used to save power and preserve drive mechanisms) or "thermal calibration."
MacFixIt reader Pedro writes:
"I also have heard the marble dropping sound a lot on my PowerBook 1.5GHz 15" AL. It started when I swapped the drive with a Seagate Momentus 100GB 5400RPM drive several months ago. This sounds seems to be a thermal calibration of the drive. It happens when the PowerBook heats up due to extensive processing. I normally do not see a system slow down. However, once the noise intrigued my coworkers when I was doing a presentation in a quiet conference room.
"Seagate manual has this note: 'During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.'"
John Schofield writes:
"I was really struck by the description of the sound as being like 'a marble being dropped on a hard surface.'
"I'm a former Mac tech who worked at an Apple Authorized Service Provider, now I'm doing other things. I always described that sound as "a ball bearing dropping on concrete" -- a sound I heard often from drives that were about to or were in the process of dying. (I stopped being an AASP long before the Mini came out, but I'm very familiar with the noise.
"Apple won't replace the drives until they actually die (which is a reasonable position, I think) but that means anyone with a Mac Mini making these kinds of noises should be really religious about backup -- those drives could go any minute, or get progressively wonkier as time goes on."
Adam Roberts adds:
"Having serviced and worked on hard drives for almost 20 years.. I can tell you that any drive making a loud clunk sound is not good.. this is usually caused by the drive armature assembly slamming into the mechanical stop that limits its range of motion.. which is usually caused by the fact that the servo calibration is messed up and cannot properly govern the speed and position of the head assembly on the drive..
"Basically the drives are bad.. but it isn't an instant failure.. the drive will beat itself to death.. whenever I hear a drive 'clunking' as I call it.. I always advise the client to replace it ASAP. A lot of time, the problem is worsened by temperature. As the drive heats up, the electronics go out of spec and it has a harder time of keeping the servo mechanism on track. With the smaller drives in small confined spaces.. they get very hot.. also it just boils down to plain old bad hardware, poor quality.. bad components used in the drive manufacture."
aktivieren" eingeschaltet war. Hab's wieder ausgeschaltet, seit dem verhält sich die Platte wieder "normal"
