On Mon, Sep 07, 2009 at 12:57:33PM +0300, Majed B. (majedb@xxxxxxxxx) wrote: > If you're going to spin down the disks, you'd need to unmount the > array first to ensure your data is fine, and after a spin-up then you > mount the array again. You don't needo to unmount it: just leave it mounted, and it will automatically spin up when accessed. I've been doing just that with a backup (rsnapshot) server for a some time, works just fine. > I would suggest you buy a meter to measure how much power your storage > is consuming before you decide on your next action. In my case the total power consumption went down by over 50% (the disks stay powered down by about 85% of the time). > On Mon, Sep 7, 2009 at 6:48 AM, jahammonds prost<gmitch64@xxxxxxxxx> wrote: > > I've been becoming interested in the power consumption of the arrays I have on a couple of servers here that are basically used as media servers. Since they're not being used when I'm at work, I was looking at the possibility of spinning the disks down during certain times, and having them either spin up at a set time, or (ideally), when there is disk activity. > > > > I can do this on single drives using hdparm -S to set the spindown timeout, and the disks will spin up on activity as needed. Is there something similar I can do with an md array? I simply do it with every individual disk of the array. -- Tapani Tarvainen -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
