Proposed Monitoring Architecture-Spectra

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Proposed Monitoring Architecture (3–5 Years Outlook)

Target Scale

        Hosts: Up to 15,000
        Services: Up to 150,000
        Expected Growth: ~3x from current capacity


2. Hardware Sizing

Y-o-Y Resource Requirement Projection (Main Server):

 Year       Hosts     Services    CPU (vCores)       RAM (GB)       / (GB)     /data (TB)
May'25      5500      40000       64                 64             300        2.6
+1 Year     6500      60000       80                 80             400        3.5
+2 Year     8000      80000       96                 96             450        4.0
+3 Year     10000     100000      112                112            500        4.5
+4 Year     12500     125000      128                128            550        5.0
+5 Year     15000     150000      128–144            128–144        600        5.5


Probes
Note: Add two more probes (5000 devices on each probe) with the same specs as current for horizontal
scalability.

 Component          Existing              Proposed
/                   500 GB                500 GB
/data(drbd)         500 GB                500 GB
RAM                 32 GB                 32 GB
vCPU                40                    40


Probes: Each additional probe requires a separate license (typically "Enterprise Edition e.g., Nagios XI
Enterprise or equivalent).