On Mon, 17 Sep 2007, Kent Watsen wrote: ... snip ... >> (Incidentally, I rarely see these discussions touch upon what sort of UPS is >> being used. Power fluctuations are a great source of correlated disk >> failures.) >> > > Glad you brought that up - I currently have an APC 2200XL > (http://www.apcc.com/resource/include/techspec_index.cfm?base_sku=SU2200XLNET) > - its rated for 1600 watts, but my current case selections are saying > they have a 1500W 3+1, should I be worried?
Bear in mind that you must not exceed *either* the VA or the Wattage ratings. So, for example, if your UPS is 2200VA/1600W and your combined systems consumed 2000VA and 1700W - its a no go (exceeds the wattage rating). This is usually not an issue with newer power supplies with power factor correction (PFC). If the PFC = 1.0 (ideal) then VA rating = Wattage (rating). Recommendation: Measure it with a Seasonic Power Angel (froogle for seasonic ssm-1508ra) which works well, or try the kill-a-watt (have no experience with it). Regards, Al Hopper Logical Approach Inc, Plano, TX. [EMAIL PROTECTED] Voice: 972.379.2133 Fax: 972.379.2134 Timezone: US CDT OpenSolaris Governing Board (OGB) Member - Apr 2005 to Mar 2007 http://www.opensolaris.org/os/community/ogb/ogb_2005-2007/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss