---
title: Single Connect Sizing
slug: singleconnect-2-16/single-connect-sizing
description: Looking for recommendations on CPU, memory, storage, and bandwidth sizing? This document provides detailed calculations for a system with specific modules and concurrent sessions, recommending a maximum of 150 concurrent sessions per instance. Includes ta
docTags:
createdAt: 2020-08-26T15:58:43.000Z
---
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# SIZING CALCULATE
SECTION I: CPU SIZING
---------------------
The optimum approach known in your previous designs should be calculated max 150 concurrent sessions (RDP / SSH mixed) per instance.
| **#** | **Services** | **Minimum CPU Core **
**Consumption** | **Optimum CPU Core **
**Consumption** |
| ----- | ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------- | ----------------------------------------------- |
| **1** | OperatingSystem
Netright-Tomcat
Nssoapp
Guacd
SFTP Proxy
Kron Tacacs
Radiusd | 4 | 12 |
| | Base Module +
200 SSH/Telnet Session
OR
100 RDP/VNC
OR
100 SFTP Proxy | 16 | 32 |
****
## SECTION II: MEMORY SIZING
### MINIMUM MEMORY CONSUMPTION
| **#** | **Services** | **Feature** | **Minimum Memory Consumption** | **Required For** |
| ----- | ---------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ | ------------------------------ | ----------------------------- |
| **1** | OperatingSystem
Netright-Tomcat
NSSOAPP
GUACD
SFTP Proxy
Kron Tacacs
Radiusd | OS
GUI
SSH Proxy
RDP Proxy
SFTP Proxy
Tacacs+ Server
RADIUS Server | 16 GB | Base Software for all modules |
| **2** | PostgreSQL | Database | 8 GB | Database |
| **3** | SymmetricDS | Replication Tool | 4 GB | Replication |
| **4** | Buffer (%20) | All Module / OS | 4 GB | Buffer |
| | | | | |
| **#** | Totaly | | 32 GB | Total Calculated |
### MODULE MEMORY CONSUMPTION
| **#** | **Module** | **Memory Consumption** |
| ----- | ---------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| **1** | SSH/Telnet Proxy | Each SSH Telnet session with 1 TPS (Transaction per second) requires 9 MB memory |
| **2** | RDP Proxy | Each RDP session requires 64 MB memory under normal user behavior (running and configuring applications. But not watching videos) |
| **3** | SFTP Proxy | Each SFTP session requires 30 MB memory during file upload/download |
****
### EXAMPLE MEMORY CONSUMPTION CALCULATION
Memory sizing for 500 concurrent SSH sessions
| **#** | **Module** | | **Calculated** |
| ----- | ------------ | -------------------------------- | ----------------- |
| **1** | SSH Sessions | 500 Concurrent Sessions | 500 x 9 = 4500 MB |
| | | | |
| | | Total | 4.5 GB |
| | | Buffer (20% of Total) | 1 GB |
| | | Minimum Memory
(Section II) | 32 GB |
| | | Grand Total | 37.5 GB |
****
### EXAMPLE MEMORY CONSUMPTION CALCULATION
Memory sizing for 300 concurrent SSH sessions and 50 concurrent RDP sessions
| **#** | **Module** | | **Calculated** |
| ----- | ------------ | -------------------------------- | ----------------- |
| **1** | SSH Sessions | 300 Concurrent Sessions | 300 x 9 = 2700 MB |
| 2 | RDP Sessions | 50 Concurrent Sessions | 50 x 64 = 3200 MB |
| | | | |
| | | Total | 5.9 GB |
| | | Buffer (20% of Total) | 1.2 GB |
| | | Minimum Memory
(Section II) | 32 GB |
| | | Grand Total | 39.1 GB |
****
## SECTION III: STORAGE SIZING
### STORAGE CONSUMPTION
| **#** | **Module** | **Minimum Memory Consumption** | **Description** |
| ----- | ------------------------ | ------------------------------ | ---------------------------------------------------------------------------- |
| **1** | Base System (OS, Apps) | 30 GB | |
| **2** | Database | 100 GB | It varies according to the number of concurrent sessions and usage intensity |
| **3** | Native Application Logs | 20 GB | |
****
### EXAMPLE STORAGE CONSUMPTION CALCULATION
1 hour session video record's file size is approximately 38 MB.
| **#** | **Module** | | **Approximately Calculated** |
| ----- | -------------- | ---------------------------------------------- | -------------------------------- |
| **** | Video Record’s | 1 hour session | 38 MB |
| **1** | SSH/RDP Proxy | 300 sessions (Average session duration 1 hour) | 300 Sessions x 38 MB = 11.400 MB |
| | | | |
| | | Total | 11.5 GB |
****
## SECTION IV: BANDWIDTH
### BANDWIDTH CONSUMPTION
| **#** | **SESSIONS** | **Tx/Rx Total Bandwith (Avarage)** |
| ----- | ------------------------------- | ---------------------------------- |
| **1** | One SSH Session | 5 Kilobit per second |
| **2** | One RDP Session (without video) | 1 Megabit per second |
| **3** | One RDP Session (with video) | 64 Megabit per second |
| **4** | One SFTP Session | 14 Megabit per second |
| **5** | One TACACS Package | 5 Kilobit per second |
| **6** | One RADIUS Package | 1 Kilobit per second |
## SECTION V : Example Calculation Nodes (It is assumed that each server is loaded with 150 Concurrent sessions)
*"The optimum approach known in your previous designs should be calculated max 150 concurrent sessions (RDP / SSH mixed) per instance." *
| **#** | **Module** | **Session** | **Calculated** |
| ----- | ---------- | --------------------------- | --------------------------------- |
| **1** | RDP Proxy | 500 Concurrent Session | 500 x 9 MB = 4500 MB |
| **2** | SSH Proxy | 500 Concurrent Session | 500 x 64 MB = 32000 MB |
| | | | |
| | | Total | 36.5 GB |
| | | Buffer (20% of total) | 7.3 GB |
| | | Minimum Memory (SECTION II) | 32 GB (Per instance) x 6 = 192 GB |
| | | Grand Total | 235.8 GB |
### Calculated 500 RDP, 500 SSH Mixed Concurrent Session
| **** | **# of CPU Core ( Minimum / Optimum)** | **Memory** |
| -------------- | -------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
| **SC Prod #1** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |
| **SC Prod #2** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |
| **SC Prod #3** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |
| **SC Prod #4** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |
| **SC Prod #5** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |
| **SC Prod #6** | 16 / 32 | 6.1 GB 150 Concurrent RDP/SSH
1.3 GB 20% Buffer
32 GB Minimum Modules Memory
39.4 GB Grand Total |