The February Cluster and the next phase

25th April 2011 by Shelby

Squidwolf > Blog > Dev Blog > The February Cluster and the next phase

February, now been to hell, see it freeze over a couple of times and is now back, currently consists of about 11 machines in addition to support servers.

The recent upgrade involved expansions to our FAStT600 with an EXP700 and adding 14 disks. All the disks are 36GB 15KRPM FibreChannel disks (and not all arrived). This increased the throughput or I/O of the Squidwolf SQL cluster considerably.

We will also upgrade the servers in our SQL cluster with 2 IBM xSeries 445 bricks. Each configured with 4 Intel Xeon 3.02GHz processors and 8GB of RAM.

The cluster is divided into proxy servers and YEP!!! servers. The 12 proxy servers handle packet sanity, data compression and manage sessions on behalf of the clients while the 28 YEP!!! servers handle all simulation needs of the world. Our automatic load management assigns services to YEP!!! servers on demand, be they solarsystem simulation, chat channels, market regions, agents etc.

In the second phase we will add a bunch of YEP!!! community servers. They are IBM xSeries 335 all configured with 2 Intel Xeon 2.8GHz processors and 2.5GB of RAM.

You can see an early pic of the cluster like it was at launch here on the right. We’ll get updated pics after the second phase.

There are 7 administrators (not all full-time) that work around the cluster on database, application, hardware, networking and backup administration. In addition we get various experts on the team in larger operations. We also have a number of server developers that give it lots of love.

As an example, our first phase of the upgrades involved 11 people including the IBM experts. The second phase will include more since they are larger scale ops and of course ensuring the shortest downtime possible without compromising the upgrade process is key.

For those wondering, I’m covering EMAID Izzy’s responsibilities while she is out of town.

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