kern/140752: HDD power-off procedure is not clean
dynamic-wind at mail.ru
Sat Nov 21 11:50:02 UTC 2009
>Synopsis: HDD power-off procedure is not clean
>Arrival-Date: Sat Nov 21 11:50:01 UTC 2009
Fujitsu-Siemens S6410 laptop
Hitachi HTS545016B9A300 SATA HDD (Travelstar 5K500.B family)
After power-down (halt -p) a loud enough "clink" sound is heard from the HDD suggesting it is performing emergency head unload. Such sound is NEVER heard when shutting down WinXP.
I am afraid that this causes excessive stress to a modern HDD.
The specification for Travelstar 5K500.B at
declares that emergency head unload count is limited to 20,000.
Possibly there is no emergency unload, but the sound is very unpleasant.
P.S. my previous HDD died after 1 year of daily use of FreeBSD-6.3 on the same laptop.
Could ata driver issue Sleep or Standby command at power-down as recommended in the above document?
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