Re: How about a behavior...

From: Warner Losh <imp_at_bsdimp.com>
Date: Tue, 24 Jun 2025 17:45:33 UTC 
On Tue, Jun 24, 2025 at 11:36 AM Jan Bramkamp <crest@rlwinm.de> wrote:
>
> On 22.06.25 03:41, Joe McGuckin wrote:
> > .. where ifs puts drives to sleep in periods when little usage, like after business hours.
> >
> > Joe
> You can do this for SAS or SATA drives with camcontrol, but for spinning
> disks you shouldn't configure it too aggressive because spinning up will
> take several seconds and puts wear and tear on the drives and for SSDs
> it's not that useful.

Yea. To make this work out, you have to somehow limit the normal 'housekeeping'
access to the drives from the 'application' data. 'housekeeping' access would
fail if the drive was spun down, but 'application' data accesses. But
we don't have
anything like this in place today.

Warner