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Emanuel van der Aalst's avatar
Emanuel van der Aalst
Brass Contributor
Apr 22, 2020

Can you be creative with Reserved Instances?

I have a question. Can I buy 2 reserved instances and run several machines with them? Scenario:

I have three DS2_V3 machines. The database server is running continuously, my desktop session hosts run 50% of the time, let's say everyday 7am-7pm but simultaniously. Can I cover that with buying two reserved instances of a DS2_V3? Or does that not compute?

Automation & Control
azure

1 Reply

  • manadis's avatar
    manadis
    Copper Contributor
    Apr 23, 2020

    Emanuel van der AalstI have a suggestion. Spin up this workload with regular instances (non reserved instance) and calculate which sizes are the suitable for your workload. Then purchase those reserved sizes and create a policy with your timetable ( 7:00 - 19:00 ) . Also if you setup smartly your persistent data outside your VM you can even decomission the VM's every day , spin fresh the next day and allocate the 19:00 - 07:00 reserved instances for another workload. 

     

    I follow those links:
    https://azure.microsoft.com/en-us/pricing/reserved-vm-instances/

    FAQ question : 

    How do I know which VM size to buy for an Azure Reserved VM Instance?

    and this 

    https://docs.microsoft.com/en-us/azure/cost-management-billing/reservations/understand-reserved-instance-usage