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SSDs are cheaper than RAM. I'm not keeping a 1TB database in memory.

How about SAP HANA? They keep 100TB in memory...

They have startup program: http://www.saphana.com/community/learn/startups

I've used SAP HANA and it's a fantastic piece of software arguably the best SQL database on the market today.

It also costs an absolute fortune (only approved hardware allowed) and even the AWS instance which costs $3.50/hour is not certified for production deployments. I don't know many startups who can afford $5000 a month for minimum redundancy.

That's not an option for me, my database is more than 20G.

32GB of RAM is $220 on Newegg.

Or, http://www.ovh.com/ca/en/dedicated-servers/

Preach!

DB in RAM still requires to write to disk, which is often the bottleneck, not the reads.