Re: How do redundant power supplies in servers work?
Seth Mattinen <sethm-z7IltzP/[email protected]> Sun, 11 Sep 2011 17:53:40 -0700
| Newsgroups | gmane.org.operators.internet-access |
|---|---|
| Message-ID | <[email protected]> |
On 9/11/11 5:29 PM, Erik Anderson wrote: > On Sun, Sep 11, 2011 at 2:58 PM, Blake Pfankuch <bpfankuch-iDUpQSA8o47qlBn2x/[email protected]> wrote: >> http://blog.samkendall.net/2010/03/22/hp-proliant-g6-series-server-issues-with-line-interactive-upss/ this specifically discusses HP servers and APC, but we have seen the same thing with smaller UPS', even rack mountable, and new dell servers too. >> > > Very interesting article, Blake. Thanks for sending it along! We use > high-end APC UPSes at my current $work, but the symptoms the author > described do help make sense of some similar behavior I saw a few > years ago with a cheap UPS at a client site. > Yeah, any UPS that outputs a stepped approximation sine wave (rather than a pure sine wave) will probably not play nice. Always go for the pure sine wave models for important stuff. Of course, convincing a client not to cheap out on the UPS is a different story. ~Seth -- Eat sushi frequently. - Avi [email protected] is the human contact address. [email protected] is the list posting address. See below URL for subscribe/unsubscribe and list options: http://inet-access.net/mailman/listinfo/list