Wednesday April 16th 2008, 11:59 pm Geral, SysAdmin - Posted by sam
Depois de um amigo meu me ter enviado este link - 40 most disastrous cable messes, decidi que estava na altura de dar prioridade a resolver esse problema no meu trabalho.
Deixo o melhor texto que encontrei na net sobre o assunto:
The system that I have seen involved placing a patchbay in each rack,
with X number of cables (and fiber) running to a central patching area.
Let X = max number of systems per rack x2 (to allow for dual NIC’’s), or
even x3 (triple NIC or remote management console), plus some slop.
I could see having 4x or even 5x the number of cables in some cases.
(2-3 NICs, LILO, KVM, serial, etc.)
Pick a color code, and stick to it. Label everything. Put a serial number
on each end of each cable.
You could stagger patchbays within racks, putting one at the top, another
at the 2/3 up, another at 1/3, etc.
Allow space to each side of the rack rails, and install vertical cable
management, and wiremold power strips. Velcro and lashing bars are your
friends.
Some of the rackmount servers come with a cable arm for all the cables
to allow the unit to be slid out of the rack, and unplugged from the front,
or to allow access to the insides without unplugging.
Allow for more power than you think you will need, just remember that for
every watt of heat that you radiate into the room, you need some means of
removing from the room via A/C.
I like to have at least 2 circuits per rack, to allow putting dual
power supplies on different circuits.Bob Vaughan
techie [at] tantivy.net
PS: A primeira foto tirei-a num bastidor de um amigo meu, numa referenciada multinacional a operar em PT
Tuesday March 11th 2008, 2:18 am Geral - Posted by sam
Um sueco começou a curtir com um kit de robótica da Lego que tinha comprado para as filhas e fez um robot que resolve um cubo de Rubik em cerca de 6 minutos!
Sunday March 02nd 2008, 3:01 am Geral - Posted by sam
Eh lá! Fiquei a saber que o meu blog é vintage! Este site foi criado no dia 7 de Fevereiro de 2003, data em que tive o meu primeiro acesso em casa para a banda larga - Sapo ADSL 512k/128k. Não tinha o formato que tem hoje mas era algo que se assemelhava a um blog.
Este texto surge porque via o browserd fiquei a saber que o sr. Paulo Querido tinha escrito um artigo que definia a idade da blogosfera nacional com 5 anos. Ao contrário do Pedro (greetings, screenie), não acompanho os textos do sr. Paulo Querido, mas deu pra rir… Assim como deu quando o referido sr. noticiou a primeira rede editorial de blogs nacional. Mas desta vez ainda me ri mais porque reparei num pequeno pormenor que se encontra no site dele:
Sou jornalista freelancer, escrevo livros e artigos (e também algum código) sobre a web e na web desde 1989.
Esta frase tem várias interpretações possíveis, e como li no seu currículo que é jornalista há mais tempo, presumo que a frase se poderá ler da seguinte forma:
escrevo livros e artigos sobre a web e na web desde 1989.
Após ler um pouco mais do currículo do sr, percebi que fez a primeira entrevista transatlântica utilizando a internet. Não duvido que o tenha feito, mas infelizmente parece-me que não marcou a web em si… Por acaso até fiquei com alguma curiosidade em saber mais dessa entrevista (será que foi usando o talk). Como é que seria possível aceder de Portugal em 89 à web se a entidade reguladora nacional só entra para a web em 91?
Bem, divagações. Whatever.
Pedro - imho, instala o stumble e selecciona a categoria de humor - vale bem mais a pena que ires ler o blog daquele sr.
Tuesday February 26th 2008, 3:46 pm SysAdmin - Posted by sam
Desde ontem à noite que o acesso a alguns sites internacionais via Clix ficou lentíssimo. A Clix está com problemas de perda de pacotes entre os 60 e os 90%.
Tuesday February 26th 2008, 1:52 am Geral - Posted by sam
Depois de me fartar de ter memory leaks no firefox em MacOS X, fiz uma busca no google e li que no 3.0 beta 1 tinham sido corrigidas 300 fugas de memória. Instalei a última beta (3) e digo-vos, vale bastante a pena!
O aspecto foi melhorado, a velocidade também e nota-se bem a diferença de utilização da RAM, sobretudo quando deixo o browser aberto durante várias horas.
Thursday February 21st 2008, 12:54 am BOFH, SysAdmin - Posted by sam
If you ask me technical questions please don’t argue with me because you don’t like my answer. If you think you know more about the topic, why ask? And if I’m arguing with you…it’s because I am positive that I am correct, otherwise I’d just say “I don’t know” or give you some tips on where to look it up, I don’t have the time to just argue for the sake of it.
Starting a conversation by insulting yourself (i.e. “I’m such an idiot”) will not make me laugh, or feel sorry for you; all it will do is remind me that yes, you are an idiot and that I am going to hate having to talk to you. Trust me; you don’t want to start a call that way.
I am ok with you making mistakes, fixing them is my job. I am not ok with you lying to me about a mistake you made. It makes it much harder to resolve and thus makes my job more difficult. Be honest and we can get the problem resolved and continue on with our business.
There is no magic “Fix it” button. Everything takes some amount of work to fix, and not everything is worth fixing or even possible to fix. If I say that you just need to re-do a document that you accidentally deleted 2 months ago, please don’t get mad at me. I’m not ignoring your problem, and it’s not that I don’t like you, I just cant always fix everything.
Not everything you ask me to do is “urgent”. In fact, by marking things as “urgent” every time, you almost ensure that I treat none of it as a priority.
You are not the only one who needs help, and you usually don’t have the most urgent issue. Give me some time to get to your problem, it will get fixed.
Emailing me several times about the same issue in the same day is not only unnecessary, it’s highly annoying. Emails will stay until I delete them, I won’t delete them until I’m done with them. I will typically respond as soon as I have a useful update. If it is an urgent issue, let me know (see number 5).
Yes, I prefer email over telephone calls. It has nothing to do with being friendly, it’s about efficiency. It is much faster and easier for me to list out a set of questions that I need you to answer than it is for me to call and ask you them one by one. You can find the answers at your leisure and while I’m waiting I can work on other problems.
Yes, I seem blunt and rude. It’s not that I mean to, I just don’t have the time to sugar coat things for you. I assume we are both adults and can handle the reality of a problem. If you did something wrong, I will tell you. I don’t care that it was a mistake, because it really makes no difference to me. Don’t take it personal, I just don’t want it to happen again.
And finally, yes, I can read your email, I can see what web pages you look at while you are at work, yes, I can access every file on your work computer, and I can tell if you are chatting with people on an instant messenger or chat room (and can also read what you are typing). But no, I don’t do it. It’s unethical, I’m busy, and in all reality you aren’t all that interesting. So unless I am instructed to specifically monitor or investigate your actions, I don’t. There really are much more interesting things on the internet than you.
Adorava pendurar isto na minha sala em letras garrafais.
