System Requirement for OBA

******* 3 Type of scenario for OBA  installation (Small,Medium and Large).*********

OBA application server host recommendations:
4 CPU
12 GB Memory min 16 GB recommended
60 GB disk minimum.
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1. OBA collectors server host recommendations                                                             
Number of monitored hosts up to 500 - 1 Collector is require         
     8 CPU                                                             
     24 GB Memory minimum 32 GB recommended                             
    40 GB Disk minimum.                                               
Vertica cluster nodes 1 node (8 CPU, 32 GB Memory, 1 TB Disk)     

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2. Number of monitored hosts up to 5000 - 3 collectors servers           
    8 CPU
    24 GB Memory minimum 32 GB recommended
    40 GB Disk minimum each
Vertica Cluster nodes 3 node cluster. Each node 16 CPU, 64 GB Memory,10 TB Disk

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3. Number of monitored hosts more than 5000 - 1 collector is require
 (Add 1 Collector for every additional 5000 nodes)
Same resources require as mentioned above.
Vertica Cluster nodes 3 or more node cluster.Each 32 CPU, 256 GB Memory, 10 TB Disk

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Note : Certain collection types, like custom metric collections, SiteScope, and NNM/NPS collections may require substantially more disk space in Collectors.