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Robert's Sysadmin Blog Unraveling the datacenter one fibre at a time Tech IT related posts, may include posts relating to my work.
Unix sysadmin blog: Unixplaza
Unixplaza Blog Site

My friend and former collegue Mohamed recently launched a Unix blog: "Unixplaza". Looks like he is writing about his own Unix sysadmin adventures. He really knows his stuff, so that should be cool to watch.

Posted On Thursday, August 14, 2008 6:57 PM

When you touch that server you touch me
They turned off the HPSIM and general management and alerting server this morning, or at least, unplugged it, cause it was causing this huge network spike at a remote site I know for a fact that no one besides myself knows what it is exactly that machine does, as its only usefull to me and what I do. That doesnt mean it isnt explained in the server list in Sharepoint that I made and painstakingly try to keep up to date, that no one bothers to ever look at. And of course no one bothered to ask during ......

Posted On Friday, July 25, 2008 10:56 PM

Big Bang Servermove succesfull
This Saterday, we switched the subnet over, and moved all the remain criticle systems over to a new serverroom across the country. I didnt get to make as many pics as I liked, and no video, this was mainly cause I was so bussy of course. :D Half the pics below are curtesy of Arnold. Back of the Digital Alpha box, refernece sho for recabling. Packing up the servers in special locked crates. You could see these movers where the right stuff, big burly guys, but they handled the servers like feathers. ......

Posted On Monday, July 7, 2008 10:51 PM

Version 7.1 of the TCR rack diagram
This is more or less how its gonna be. All the bits are now in place, half the rack stuff has been put in place already, the last stuff goes in coming Vriday. One of the biggest oversights we made was with power requirements. If you want redundant power for a lot of servers, you need to make sure you have a LOT of plugs, enough PDU’s, and plenty of PSU to back it all up. We didnt, partly due to time contraints, budget, but also short-sightedness, and my reliance on people that I, to put it bluntly, ......

Posted On Monday, June 30, 2008 11:57 PM

Computer Room Cleanup and re-cabling Pics and Movies
So a few weeks ago, we spent our Saterday doing major recable work on the new Technical Computer room (TCR) in the new location, in preperation for our Big Bang services move coming up on the 5th of July (it was delayed from the 22nd)) So thise pics and videos are a few weeks old now, but who cares. PICTURES (scroll down for movies) Not enough room to neatly get all the fat KVM cables sorted, so later I actually extended the room for the cables to 2U, and used the cable guide rail only for ethernet ......

Posted On Monday, June 30, 2008 11:37 PM

Datacenter Move post 4
Youtube videos are worth a thousands words, so I will let them do the talking. Progress TCR Move May27 part 1 (the old location) Progress TCR Move May27 part 2 (the new location) What Mustafa thinks of IBM rackmount kits: And some pics from the last 3 days: (Click for larger versions) IBM xseries 336, bout 3 years old now ServeRAID 6M controller (in the PCI slot bay). Its IBM branded but its basically an Adaptec. This comes out of one of the 2 xseries 336 servers that, together with the EXP400 shelf, ......

Posted On Wednesday, May 28, 2008 8:28 PM

Meanwhile, back at the old location
A tour of the current state of the office, and one of the server rooms, where most racks are now empty or near-empty. An Epic moment. Gert-Jan uninstalls Citrix on the last 2 servers in the farm, effectively ending 6 years of the 2000-user, 60-server Metaframe XP Citrix farm that served our Netherlands users. I would have had Marcel do this, but he has gone on holiday. Various IBM servers and almost all the blades lie ready to be moved to the new location. We don't have a use for any of these currently, ......

Posted On Friday, July 4, 2008 9:15 PM

The Vegas SuperNAP
Datacenter Knowledge has 2 posts up about Switch Communications new datacenter in Las Vegas, which they are claiming is the highest-density datacenter in the world. http://www.datacenterknowle... http://www.datacenterknowle... Switch Communications says it is successfully cooling a section of its Las Vegas data center running at nearly 1,500 watts per square ......

Posted On Tuesday, May 27, 2008 10:49 PM

Desicionmaking on the new Proxy solution
For your enjoyment, here is a, slightly edited, email I just sent to the department head and various other decision makers. It goes over some of the options we need to consider to solve the current issues with our internet access. Names and places have been changed to protect the guilty ;) And please exuse the spelling. I was in a hurry and I really dont care about spelling as much as I do content. ---------------------------- Hi all, We are currently faced with some decisions that need to me made ......

Posted On Monday, May 26, 2008 7:34 PM

Loic le Meur responds to my post
I pinged Loic le Meur, creater of Seesmic and owner of Twhirl on Twitter to draw his attention to my post on some of the issues i have with Seesmic. He responded as follows: “you have great points and we are working exactly in the spirit you expect” I will take this to mean that we can expect groups/filter function in the Twhirl client or the Seesmic service in the near future. I cant wait :) ......

Posted On Tuesday, May 13, 2008 1:20 AM

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