SAS spinup and mode page proposals Questions

Seto, Pak-lung pak-lung.seto at
Tue Oct 15 06:27:54 PDT 2002

* From the T10 Reflector (t10 at, posted by:
* "Seto, Pak-lung" <pak-lung.seto at>

Your comment:

"After initial power on and spin-up, drives can be spun down
and spun-up by software (see previous list).  Without SPINUP
continuously running, software could spin up too many drives 

Is that mean the SAS drive will never spin down, since SPINUP will
keep it running all the time.  Or at the most, software can only spin down
the drive in between SPINUP.

I don't see how does it prevent software spin up too many drives with SPINUP
continuously running?
Software is controlling the START STOP UNIT command, right?


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