<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Apr 24, 2014, at 1:41 PM, Greg Lipschitz <<a href="mailto:Greg@thesummitgroup.com.au">Greg@thesummitgroup.com.au</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Sounds like you got Schnidered Tom! :P<br></div></blockquote></div><br><div>APC is Schneider too. Sounds like he got “differently Schneidered.”</div><div><br></div><div>A few DCs (notably Nextgen/Metronode and Internode adl6) strongly recommend ATSs because there</div><div>are OHS&W considerations which sometimes require isolation of switchboards when electricians are</div><div>working behind the escutcheon.</div><div><br></div><div>It’s far easier to organize maintenance windows with customers if the consequence of a switchboard</div><div>shutdown is “equipment runs on supply from the other switchboard” instead of “equipment goes down.”</div><div><br></div><div>The hook at those sites is that there’s a bulletpoint in the induction documentation which says the </div><div>provider reserves the right to isolate one supply per rack without warning at any time. They might</div><div>not ever necessarily actually *do* it, but if they’ve said they might then you’d better plan for it!</div><div><br></div><div><a href="mailto:perrin.richardson@icloud.com">perrin.richardson@icloud.com</a> wrote:</div><div><br></div><div><blockquote type="cite">I guess you'll want to be conscious of whether your DC provider allows ATSs. I can't help but thinking I've heard one or two don't locally <br></blockquote><br></div><div>Then I’d strongly recommend against using those sites.</div><div><br></div><div>There are lots of DCs which won’t let you run in-rack UPSs (they’re already providing you with UPS</div><div>power, there aren’t a lot of reasons for the extra inefficiencies and power factor considerations involved</div><div>in quadruple-conversion power, eh?). </div><div><br></div><div>Fire regulations might require the DC to be able to shut equipment down before fire fighters start</div><div>spraying water around. They can’t do that if you have a UPS in your rack.</div><div><br></div><div>But I can’t think of a good reason for not allowing ATSs, which, in most of the 1RU variants, are</div><div>basically equivalent to a piece of wire with a switch in it. </div><div><br></div><div><br></div><div> - mark</div><div><br></div><div><br></div></body></html>