st380013as
dobio upravo majl od seagata:
Hello F,
In response to your questions about the seek acoustics on our Barracuda
7200.7 disc drives, please let us assure you that we continue to conform to our published seek acoustics specifications. Because our idle acoustics specifications are very low, there is a somewhat larger difference between idle and seek than some of our competitors have, which can cause the seek operation to be more noticeable to the human ear, particularly when mounted in systems which conduct audible noise or in environments with low ambient noise.
Independent reviewers continue to find these drives to be remarkably quiet. Here are some excerpts for the 7200.7 family in particular:
"Ever since the 'Cuda IV, the Seagate Barracuda ATA series has set a
standard for quiet operation. The 7200.7 series continues the trend.
"--StorageReview.com, 6/03
"Seagate Barracuda 7200.7 is a stunning product....performance and
silent operation noise raise this new Seagate absolutely one of the
best SATA drives available"--HardwareZone.com, 9/03
"Heat and Noise: In computer booting or busy writing and reading
operation, WD Raptor 360GD, Hitachi Deskstar 7K250 and Maxtor
DiamondMax Plus 9 SATA/150 120GB have obvious noise. It seems that
Seagate Barracuda 7200.7 160GB/SATA has a relatively good control on
heat and noise among the testing products."--ChinaByte.com, 9/03
"2003 Best of the Best HDD Section: Barracuda 7200.7...We believe that
its high reliability and the fact that it is the quietest disk
available are what won it support from a wide range of users." --DOS/V
Magazine, 12/03
"The 7200.7 earns points in our test lab with its convincing
combination of performance and low noise level."--Tom's Hardware Guide,
1/04
"The new Seagate Barracuda ST3200822A is extremely quiet....It scores
high marks for its scarcely audible operating noise."--PC GAMES
HARDWARE, 3/04
"Apart from high performances, the 7200.7 series is particularly
silent."--Jeux Vidéo PC, 3/04
To minimize acoustics in your situation, you may want to look at the mounting situation for your drives; many chassis designs can actually increase the overall acoustics of a system due to structure-borne acoustics induced by the interaction of the drive's vibration energy with the specific chassis. Our research has shown that structure-borne acoustics is the dominating source of disc drive-induced PC acoustics.
Chassis designers can minimize the transmission of structure-borne noise by using drive-mounting isolators (see Technical Paper 298). Here are some excerpts from another Seagate Technical Paper written to address acoustics questions:
Chassis: vibration, dampening, amplification and other structure-borne noise issues
The acoustic noise of a disc drive mounted in a chassis comes from two sources. The first source, airborne acoustics, is what all drive manufacturers currently specify as the sound power value. It is the sound that comes from the drive through the air to the observer. This value is measured with the drive suspended in space by wires.
The second noise source is generated from the drive’s vibration during idle and seek. This vibration energy is transmitted directly to the PC chassis structure and causes the chassis to act as a speaker. This form of noise is structure-borne acoustics.
When drives are mounted in a chassis (frame for a PC or other product) and enclosed in a box (plastic body of PC or other product), the vibrations that cause acoustic noise can be attenuated (reduced, muffled) or amplified. For example, the plastic enclosure tends to attenuate noise emanating from the box because it muffles airborne acoustics. The chassis, on the other hand, may pick up, redirect, or even amplify the vibrations caused by the drive, which may result in more structure-borne noise emanating from the box, or through a specific portion of the box.
Seagate has considered the total effect of drives on a PC system and can show that structure-borne noise is the dominating source of disc drive-induced PC acoustics. In fact, testing has shown that changes in stand-alone drive acoustics had little effect on the overall system acoustics when drives were hard mounted in the chassis.
We hope you find some of this information useful.
Regards,
Jimmy P.
Seagate Technical Support
========== Customer's original message ==========
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This drive prodeces to much noise. I have seen about 100 hdds like this and all of them product too much noise. Hitachi and maxtor are more silent beacose of a hdd silencing programs are being writen to reduce speed/noise. No such program exists for sata barracudas and I am disapointed with you. Is there any way to reduce noise. Fleks from Croatia ========================================================
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Operating system : Windows XP
CPU and Speed : pentium 4 2.8
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Model # : st380013as
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Language : EN
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(Sent on Fri Feb 4 00:32:20 2005 GMT ): DM,SM,SD,JM (v1.54e 04-Jan-05) ID:1107477140