Build an USB Powered Fan

I’m keeping an eye on the temperature of my Dell Inspiron Mini 1012. And since it is powered-on again, according to Munin and the cpu0_temp0 / cpu1_temp0 counters, it runs at an average temperature of 59°C. This is quite a bit hot ; especially when I now it is supposed to have a TDP of 5.5 W and that the XPS M1330 is about 45°C.

The Mini is fanless! This is why I bought it and also probably the reason why it is that hot stored in a shoes cupboard with no air flow. So, I’m gonna give him some air turning an unused internal PC Fan into a brand new USB Powered Fan.
Continue reading “Build an USB Powered Fan”

Manage MySQL on a Synology DS409slim

Here’s the way to install, run and manage MySQL on a Synology DS409slim.
My DiskStation runs DSM 3.1-1748.

First of all, activate the MySQL dæmon:

  • From the Control Panel, choose the Web Services ;
  • Enable Web Station and Enable MySQL ;

Continue reading “Manage MySQL on a Synology DS409slim”

NetBSD/xen on Dell Inspiron 10

It’s now been two days I’m running TuM’Fatig on my Dell Inspiron Mini 10. The AIRIS N1110 has died so I just took the RAM and disk out of it and plug both in the Mini. Just modify the ifconfig files and here we go.
Continue reading “NetBSD/xen on Dell Inspiron 10”

What to use deduplication for?

I recently discover a storage feature named “Data deduplication” also called “Deduplication”.

Quoting Wikipedia:

In computing, data deduplication is a specialized data compression technique for eliminating coarse-grained redundant data, typically to improve storage utilization. In the deduplication process, duplicate data is deleted, leaving only one copy of the data to be stored, along with references to the unique copy of data. Deduplication is able to reduce the required storage capacity since only the unique data is stored.

I was first thinking “well, a video/document/… is a file ; and a file is a sets of 0 and/or 1. Like a ZIP archive doesn’t care if it stores pictures or text files, I may be able to use deduplication to store my 32GB of personnal pictures into a smaller storage size… sounds great!”. That’s what I want to figure out.
Continue reading “What to use deduplication for?”