[Deploying Sakai] Hardware Recommendations
csev at umich.edu
Fri Sep 7 07:39:28 PDT 2012
I am setting up the first Sakai servers in the Blackboard managed hosting facilities and being asked what kind of hardware I need. I did a little polling and IMing and came up with this model:
App Servers are Two Xeons with 12M RAM
DB Servers start with Two Xeons and 24M of RAM
In terms of growth of load, each app server (with 2 CPUs and 12M of RAM) supports 1000 logged in users.
For each 1000 logged in users I will add 0.5 CPUs and 4M of RAM to my DB servers. My initial DB server above will support 2000 logged in users and above 2000 I need to start adding RAM and CPUs.
Is this model reasonable as a first approximation or is it crazy? From my conversations I might be able to use 8GB RAM for the App Servers and maybe I need a touch more CPU per 1000 users on the DB side.
I am still going round-n-round in my mind Oracle versus MySql. If one requires far more or less hardware per logged in user - it might push me in a particular direction.
I know this is simple - I am just looking for a starting point for a model that can be adjusted as experience is gained.
Thanks in advance.
If there is a Confluence page on this - feel free to tell me to RTFM :)
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