Thursday, May 17, 2012

IBM server x336 modification SCSI to SATA - 2 (LED Indicators)

This is small update of article about modification server IBM x336 from SCSI to SATA.

Today I'd like to talk about front LED indicators.

Our cheap sata backplane has two outputs for LED indicators. One is for power and one for activity.

 

I've bought two colors led for indication power and activity of each HDD. As I dicovered later activity output not work properly.



Tuesday, May 15, 2012

Enable google talk to work with your own domain

It may look easy but it's very hard to find the correct setting.

On google help site is not complete setting if you want to make your domain fully working with google talk.

I was searching but it's also very hard to find.

I'd like to specify what I mean if I say "Fully working".

  1. Chat outside google domain (you could find settings on google site)

  2. Connect from all clients


Wednesday, May 9, 2012

IBM server x336 modification SCSI to SATA



Few months ago I bought some older IBM servers. Two cheap iBM x336 with 4 GB RAM and two SCSI disks.

After first look I decided to use ona server as my new server with two 146 GB SCSI disks and FreeBSD installed and second server modify for two SATA disks. SCSI disks are great but more expensive and lower capacity then SATA disks.

I'd like to explain how to modify IBM X336 SCSI version and using it with SATA disks. During modification there was many obstacles that I need to solve.

Wednesday, January 25, 2012

How To Boost mailserver storage performance using Facebook FlashCache



Few months ago we had performance problem with mailserver storage.

Storage has 3 HDD in RAID5 configuration. Average disk utilization per
one disk was about 90 % - 97%.
One of goals was incrase storage performance but with minimum downtime
so -> no data migration.

Tuesday, January 6, 2009

National Security Agency Vs Hysteria.sk

This cause is relatively well known in Slovakia, but clock ticks and people forgetting and I think it's not OK.This is very important part of Slovakia underground. Saying old adage: "Nations which haven't learn from their old mistakes, they are doomed to repeat them."

To many words about this cause was sayed in radio, TV, newspapers etc. I would most probably not anything new, therefore I decided to make this article only as the sum of links, resources where you can find information about this. I also make a mirror of articles, videos and pictures here becouse most of links are no longer avaible on the web.

Last update: 10.1.2009 16:01

Monday, December 29, 2008

Kauza NBU (Národný Bezpečnostný Úrad) a Hysteria.sk

Táto kauza je na slovensku pomerne dosť známa, no postupne sa na ňu zabúda a to podľa môjho názoru nieje velmi OK. Ako sa hovorí národy, ktoré sa nehodlajú poučiť zo svojich chýb sú odsúdené ich opakovať.

Veľmi veľa sa o tom všade možne popísalo a odvysielalo v televízií a rádiu. Zrejme by som vačšine nepovedal nič nové preto som sa rozhodol tento článok urobiť len ako suhrn odkazov a zdrojov kde sa môžete dozvedieť čo to zaujímave. Preto berte tento článok len ako prepoj medzi informačnými zdrojmi, akýsi informačny uzol.

Last update: 10.1.2009 16:01

ESP8266 + InfluxDB + OLED DIsplay and DHT22

Basicly just put together from Examples. Sending data tu InfluxDB was little bit tricky using HTTPClient and POST method for InfluxDB.