More disks
Just a quick update to let you know that we are in the process of adding (without any downtime) a couple of brand new Dell MD1000 disk arrays with 15 SAS 15Kprm disks each (configured as RAID10). This brings us to a total of 111 disks, along with 157 GB of RAM and 59 processor cores (many of them hyper-threaded) used to serve the ads, running 36 installs of FreeBSD, 2 instances of pf/pfsync/carp, 2 instances of pound, 21 instances of Apache, 13 instances of memcached, 33 instances of PostgreSQL, 6 instances of Slony-I, and of course a ton of our own software.
Hope you enjoy the ads as much as we have fun managing all this!