why would anyone ever bother to actually add up amps in a rack? so the breaker is 20A and the load is 19.9A. what happens when a hard drive is spun up? Oh! My pager goes off! Wow! An entire rack is down! On Sunday. And I'm 65' in the air on a zip line 90 miles away from the DC. So who pulled the "DO NOT USE" markers off the extra power strip outlets? So a child-safety socket cover secured with red duct tape with black wide sharpie that reads "NO!" clearly means remove tape and cover and plug in your new server.<br>
<br>Backups are for weanies. <br><br>Real Admins have all _their_ important stuff on thumb drives. That they just dropped down the elevator shaft through the crack between the floor and the hall. Hmm.<br><br>The important part of data security to ensure that the successful RECOVERY of data is never ever tested. It's much better in a crisis to be running around trying to figure out HOW the recovery works to a different version/system/network/planet when the server is down and it's payroll day and 2 hard drives fell out of a RAID5 storage array not on a backup process that ever succeeded in being tested. Good friends will be made that day.<br>
<br>Never, EVER label any system with it's name and IP address. This is best when there are a zillion identical systems and none of the racks are labeled. For absolute best effect, remove the room number form the door.<br>
<br><br><br><div class="gmail_quote">On Thu, Oct 11, 2012 at 3:54 PM, Jeff Hubbs <span dir="ltr"><<a href="mailto:jhubbslist@att.net" target="_blank">jhubbslist@att.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Yeah, actually: deciding that dual power supplies on servers were "for<br>
redundancy" - but not the right kind, and wiring each one up to separate<br>
circuits. Do that all or most of the way up a rack until PDUs on both<br>
sides are nearly maxxed out, such that when one power supply fails, that<br>
server's entire load falls on the other PDU and trips its breaker - then<br>
the first PDU's break trips in milliseconds because the entire load just<br>
got dumped on it...crash the whole rack. Of course, the bosses wouldn't<br>
listen to the EE major who saw this coming, and the guys who cabled up<br>
this house of horrors are probably still there...<br>
<br>
Wonder why I left the industry??<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
<br>
On 10/11/12 3:30 PM, Boris Borisov wrote:<br>
> <a href="http://tuts.pinehead.tv/2012/10/10/how-to-make-your-boss-angry-bad-linux-sysadmin-practices/" target="_blank">http://tuts.pinehead.tv/2012/10/10/how-to-make-your-boss-angry-bad-linux-sysadmin-practices/</a><br>
><br>
> Can you add something to it ?<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>-- <br>James P. Kinney III<br><i><i><i><i><br></i></i></i></i>Every time you stop a school, you will have to build a jail. What you
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- Speech 11/23/1900 Mark Twain<br><i><i><i><i><br><a href="http://electjimkinney.org" target="_blank">http://electjimkinney.org</a><br><a href="http://heretothereideas.blogspot.com/" target="_blank">http://heretothereideas.blogspot.com/</a><br>
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