Greetings, You don't necessarily need to pay for your own machine to virtualize. You could use a hosting service such as digitalocean. https://www.digitalocean.com/pricing/ With your number of records, the bigger question (in my mind) is not how many records/items you have now, but how much will you be expanding. For our production system, we use the $20/month plan. Koha is developed under Debian, and as such, using Debian is the recommended OS. Though, you are free to choose with relative-ease other Linux operating systems based on Debian, such as Ubuntu. We use Ubuntu. You are also free to try to attempt other Linux versions, but your mileage and support by others will drastically vary. I recommend at least 1GB RAM and at least 30GB drive space. Though, this is a minimum in my mind. GPML, Mark Tompsett -----Original Message----- From: Carlos Rodrigo Cordova Sandoval Sent: Tuesday, August 19, 2014 10:29 PM To: Koha-List Subject: [Koha] Suggestions of hardware Hello I need your suggestions of hardware to implement a koha server, with the following requirements: records: 47,000 items: 157,000 users: 3,000 libraries: 12 For the server I count on vmware virtualization, That operating system ubuntu or debian recommend? How many processors and RAM are needed? and if the number of records and items I recommend mysql on a dedicated server. Thank you very much. -Carlos _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz http://lists.katipo.co.nz/mailman/listinfo/koha