Sorry, that I've cross posted but this is one of the worst cases...
First my system spec:
Athlon II 1 GHz (0.18µm)
MSI MS-6167 Rev 1.0B (AMD Irongate C4, without bypass)
640 MB PC100-2-2-2 SDRAM
AHA-2940UW (40 MB/sec) I know it could be to slow, but it should be compatible
IBM DDYS-T18350N
IBM
All spin-downs occur during heavy dbench (16/32/+ clients) on the same
partition (/dev/sda8; the last one).
Most likely the drive is overheating and is spinning down/up again to
recalibrate itself. you should give it a better cooling ;-)
Dirk
