[Storage Space] Removal of physical disks

Removal of physical disks (including set usage, repair, remove). Removal of a Physical Disk from an existing pool consists of the following workflow; Setting the Usage property on the Physical…

Continue Reading [Storage Space] Removal of physical disks

Notes on PHP handlers

Comparison Graph DSO CGI SUPHP FASTCGI Low CPU usage ✔ ✔ Low Memory consumption ✔ ✔ ✔ Runs PHP as site owner instead of Apache ✔ only w/ suEXEC ✔…

Continue Reading Notes on PHP handlers

Notes about Spamassassin

The default rules set location: /var/lib/spamassassin/some_version_here/updates_spamassassin_org The custom rule set location: /etc/mail/spamassassin/ To update Spamassassin default rules set: sa-update -D  

Continue Reading Notes about Spamassassin


I have confused for many time about these three terms, STARTTLS vs SSL vs TLS. Therefore, I did some research and summarize them in short. STARTTLS is a way to use an existing insecure connection…

Continue Reading STARTTLS vs SSL vs TLS

Choice of Apache 2.4 MPM

For a super fast request/response, choose Prefork MPM, but RAM killer For a super fast concurrency-tagged server, choose Event MPM Reference: http://www.serverwatch.com/server-news/apache-2.4-delivers-more-performance.html Difference between MPM in Apache

Continue Reading Choice of Apache 2.4 MPM