Archive for May, 2008

ZFS on FreeBSD 7 — experimental for a reason!

Wednesday, May 28th, 2008

Yes, it has a reason that ZFS is not yet marked stable on FreeBSD! I had to learn the hard lesson today. Under very high load and many concurrent read requests (I set up the company's mail server with ZFS and root from ZFS), the two disks in the Raid array ...

SPF — Sender Policy Framework

Sunday, May 25th, 2008

Did you ever receive spam mails which seem to originate from your own mail address? Or did anybody else complain about you sending those emails? Then you should take a look at SPF. In a nutshell, it plugs the holes in the SMTP protocoll, which does not allow to verify ...

Two neat storage machines

Saturday, May 10th, 2008

Yesterday I set up one of our new storage machines for testing: Dell 2950, Quad Xeon, 8GB, 6x750 GB HDD. I installed FreeBSD 7 with ZFS (following up this article). Firstly it seemed to be a bit tricky, because the PERC/6i controller configuration is -- sorry -- crap from the ...