# [OmniOS-discuss] [discuss] illumos power management

Paul B. Henson henson at acm.org
Thu Nov 14 01:04:31 UTC 2013

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    > From: DavidHalko [mailto:davidhalko at gmail.com]
    > Sent: Tuesday, November 12, 2013 9:20 PM
    >
    > 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.

    Don't you need an Apple Airport to avail of wake on demand? Or an Apple TV
    it looks like...

    > 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?

    Heh; when I picked this chassis:

    http://www.supermicro.com/products/chassis/3u/836/sc836ba-r920.cfm

    I think I pretty much already gave up on "maximum" power savings ;). I've
    actually got a 4.5 kW solar panel system I put in a few years ago when we
    remodeled, so I'm not drastically concerned about power use, but I wouldn't
    mind saving a few watts here and there on things that won't really result in
    a performance impact. 30 odd seconds of latency isn't really going to cut it
    on that regard, so I'm ruling out hard drive sleep. I'd probably be happy
    enough just with power savings on the CPUs.

    Thanks.

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