Waiting 15 seconds for SCSI devices to settle *groan*

Bill Hacker wbh at conducive.org
Thu Dec 1 21:29:05 PST 2005

Simon 'corecode' Schubert wrote:

Emiel Kollof wrote:

That and 15 seconds seems a bit too long. Know of any hardware that 
actually needs that long to settle in? (and don't you guys go dig up 
the most antiquated SCSI peripherals that actually do need 15 seconds 
;) ) If yes, I'll just shut up about this.

my cd writer does.  but i have the delay set to 3 secs, and it just 
reports in later, no big deal.  so i'm basically for reducing this timeout.

Still needed for large arrays, when staggered spin-up is used to reduce 
PS load.
Modern drives generally are designed to ramp-up more gently anyway,
so using it is not always required.

As an inveterate SCSI user, I would still vote for shortening the time 
to *zero* anyway.
The diminishing universe of SCSI users may then rebuild if/as/when 
needed with a longer period.

Optioning the SCSI device (HDD, anyway) to start at power-ON means it 
will usually be
ready well before the MB BIOS and other devices have finished POST, so 
it is seldom an issue
even with multiple hardware RAID.


Bill Hacker

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