Monthly Archives: January 2009

Software RAID 10

I’ve been putting off building the software RAID10 on marmaduke. Today, I put it off no longer.
The server marmaduke has six storage devices (2 IDE and 4 SATA)

$ ls -1 /dev/hd?
/dev/hde
/dev/hdf

$ ls -1 /dev/sd?
/dev/sda
/dev/sdb
/dev/sdc
/dev/sdd

The CDROM is attached as /dev/hde and a 300GB HDD as /dev/hdf on which I’ve installed CentOS 5.2. The four SATA drives [...]

RAID 01 vs. RAID 10

I just finished building a four-drive software RAID10 on marmaduke and wanted to jot down my thoughts on RAID failure. In particular, I read a number of postings on the difference between RAID 01 and RAID 10. None of them satisfactory described the differences and how those differences changed when adding more drives.
Marmaduke only has [...]

bash progress monitor

I have a remote machine that is used to store and process XML files. Recently, I had need to duplicate a directory of XML files (e.g., cp -r a b). It’s not really germane to the subject here, but this particular server has a whack configuration and I gotta rant before I continue.
The office server [...]

Javascript DOM Listeners

I’ve wanted to build a simple gallery viewer for some time. “But there are thousands of already built viewers,” you may be thinking. Yes there are. But I wanted a simple viewer that was at once trĂ©s snappy and minimalist.
I dislike the gallery systems that open another window or create a floating panel which must [...]