Sizing and scalability guidelines for Gateway Servers

This topic provides the sizing and scalability guidelines for the hardware capacity that is required for Gateway Servers. The following factors affect the sizing drivers:

  • Size of your environment
  • Number of Agents from which data is collected
  • Data retention period

The following table provides the recommendations for the hardware capacity according to the environment size.

Operating systemSize of your environment

Processor cores

RAM (4GB/core)

IOPSStorage (in GB) for
Gateway Server, UDR, and VIS filesUDR filesVIS files
Windows

Small

(up to 1000 servers)

41632

1236

1174

60

Medium

(up to 3000 servers)

8329637023520180

Large

(up to 5000 servers)

124816061705868300
Linux

Small

(up to 1000 servers)

2816618

587

30

Medium

(up to 3000 servers)

416481851176090

Large

(up to 5000 servers)

6248030852934150

These calculations are based on the following assumptions:

  • Metric resolution - 60 minutes
  • Processing window - 4 hours
  • UDR data retention - 1 month
  • VIS data retention - 3 months
  • UDR spill interval - 15 minutes

Data retention

The data collected by Capacity Agents (in the UDR format) is periodically transferred to the Gateway Server where it is automatically processed into hourly intervals and saved in text files called VIS files. BMC recommends the following guidelines for the retention period of UDR and VIS files:

  • Keep about three months' worth of VIS files. These files are useful if you need to "recover" data. For more information, see Recovering data.
  • For UDR and VIS files, keep three months of data. Out of this data, the oldest two months data can be compressed to save space.
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