Monday, September 7, 2009

VAULT-OS: It's the Little Things That Cause Failure

I thought I blew out my new Thinkboy over the weekend, turns out I didn't realize that a mini-ITX board needs a 12 volt 5 amp power supply but a 10 AMP fuse. I only gathered this information by scouring Japanese mini-ITX support groups.

This isn't the first time I have worried I have blown everything up and it turned out to be a fuse. This is a good reason to stock a lot of fuses.

Anyway, in the process of reinstalling Windows 2000 Advanced Terminal Server on a compact flash inside 200 megabytes of storage space. It runs really, really fast. I was in the middle of creating another partition on a backup CF when all of a sudden the system just turned off. The 10 AMP fuse will give you enough protection but won't blow until it really needs to. A 5 AMP fuse will often blow at 5 AMPs, meaning normal operation of the mini-ITX will blow the fuse.

Took about two hours to locate this problem. You can see why this kind of thing takes a lot of patience and time to get right. In my setup, it was the first time I tried to drive a second storage device off IDE 44 PIN power, which apparently pushed the 5 AMP fuse to commit hari-kari.


Anonymous said...

Have you completely given up on citrix metaframe Tex? You seemed to be getting on well with it early 2008.

Texas Arcane said...

Citrix Metaframe is the most awesome thin client server in the history of computing.

Unfortunately the people who own it know this and require you to register it with a certificate as part of a complex signature on disk to protect Citrix from fraud. After I had installed Citrix and was doing this for the sixth time, I realized it may be hard to contact the Citrix server in the post-apocalyptic aftermath of World War III.

You can obtain freeware substitutes for the Citrix system to power thin clients with about 50% of the functionality but no certificates needed. Practically speaking, I have to look at what is free, available and easily installed to power Vault-OS.