On Wed, Jan 14, 2009 at 08:33:48AM +0900, jam wrote:
> Seagate published this
> http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf
>
> It says multiple drives in close mechanical proximity WILL fail !
>
> Like This:
> Drive1 seeks to track
> That movement shakes Drive2 off track, so it corrects
> THAT movement shakes Drive1 off track so it corrects
> ...
Here's a nice article and video on how vibration (in this case mere shouting)
can affect disk performance.
http://blogs.sun.com/brendan/entry/unusual_disk_latency
Nice demo of Sun's dtrace and fishworks too :-)
Matt
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