Hi Paul, Honestly, I really like how the Mac Mini wakes the entire machine up and spins up the hard drives (2x 2TB mirror) automatically during an access when everything is sleeping. I have one of these as an external storage server.
With flash l2arc & mirrored logging flash, the impact of sleeping under ZFS has the potential to be a lot less intrusive. Have you thought about adding some SSD's to your system and keep your maximum power savings? Sent from my iPhone On Nov 12, 2013, at 5:52 PM, "Paul B. Henson" <[email protected]> wrote: > I think the storage server I'm working on at home (current omnios stable) is > spinning down disks; whenever I get back to it after not touching it for a > while, anything touching my export pool (dual 6 x 3TB WD Red RAIDZ2) takes a > long time to respond, and then goes back to normal. > > My current power.conf is: > > ----- > autopm enable > autoS3 disable > > cpupm enable > cpu_deep_idle enable > cpu-threshold 1s > ----- > > I had thought that when running on server class hardware the default was not > to spin down drives, but perhaps I was mistaken? Hmm, or maybe the default > is to just skip power management completely, and explicitly turning it on > turned on everything. > > I'm thinking about adding "system-threshold always-on" to the configuration, > which I guess will disable all power down functionality, other than CPU, > which is controlled by the "cpu-threshold" parameter? What other power > savings would this turnoff? I am in general in favor of saving energy :), > other than for the disks, as the latency is too high and causes too much of > a delay, and it's not clear if setting the system-threshold to stop spinning > down disks will also disable other potentially desirable power savings. I > guess the other option would be to explicitly configure device-thresholds > for all of the disks individually. Is there any way to list what components > of a system support power management? > > While on the subject, any thoughts on event-mode vs poll-mode for cpupm? > It's not clear from the man page what the default is if you just set it to > "enable". > > Thanks. > ------------------------------------------- > illumos-discuss > Archives: https://www.listbox.com/member/archive/182180/=now > RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175845-b97465aa > Modify Your Subscription: https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
