Merge branch 'main' into develop

README.md

@@ -47,5 +47,72 @@ You can graph bandwidth and TCP RTT by client and node (Site, AP, etc), using In
 
 ### CRM Integrations
 
-- UISP
+## Server Recommendations
-- Splynx
+It is most cost-effective to buy a used server with specifications matching your unique requirements, as laid out in the System Requirements section below.
+For those who do not have the time to do that, here are some off-the-shelf options to consider:
+* 1 Gbps | [Supermicro SuperServer E100-9W-L](https://www.thinkmate.com/system/superserver-e100-9w-l)
+* 10 Gbps | [Supermicro SuperServer 510T-ML (Choose E-2388G)](https://www.thinkmate.com/system/superserver-510t-ml)
+* 20 Gbps | [Dell R450 Config](https://www.dell.com/en-us/shop/servers-storage-and-networking/poweredge-r450-rack-server/spd/poweredge-r450/pe_r450_15127_vi_vp?configurationid=a7663c54-6e4a-4c96-9a21-bc5a69d637ba)
+
+The [AsRock 1U4LW-B6502L2T](https://www.thinkmate.com/system/asrock-1u4lw-b6502l2t/635744) can be a great lower-cost option as well.
+
+## System Requirements
+### VM or physical server
+* For VMs, NIC passthrough is required for optimal throughput and latency (XDP vs generic XDP). Using Virtio / bridging is much slower than NIC passthrough. Virtio / bridging should not be used for large amounts of traffic.
+
+### CPU
+* 2 or more CPU cores
+* A CPU with solid [single-thread performance](https://www.cpubenchmark.net/singleThread.html#server-thread) within your budget. Queuing is very CPU-intensive, and requires high single-thread performance.
+
+Single-thread CPU performance will determine the max throughput of a single HTB (cpu core), and in turn, what max speed plan you can offer customers.
+
+| Customer Max Plan   | Passmark Single-Thread   |
+| --------------------| ------------------------ |
+| 100 Mbps            | 1000                     |
+| 250 Mbps            | 1500                     |
+| 500 Mbps            | 2000                     |
+| 1 Gbps              | 2500                     |
+| 2 Gbps              | 3000                     |
+
+Below is a table of approximate aggregate throughput capacity, assuming a a CPU with a [single thread](https://www.cpubenchmark.net/singleThread.html#server-thread) performance of 2700 or greater:
+
+| Aggregate Throughput    | CPU Cores     |
+| ------------------------| ------------- |
+| 500 Mbps                | 2             |
+| 1 Gbps                  | 4             |
+| 5 Gbps                  | 6             |
+| 10 Gbps                 | 8             |
+| 20 Gbps                 | 16            |
+| 50 Gbps*                | 32            |
+
+(* Estimated)
+
+So for example, an ISP delivering 1Gbps service plans with 10Gbps aggregate throughput would choose a CPU with a 2500+ single-thread score and 8 cores, such as the Intel Xeon E-2388G @ 3.20GHz.
+
+### Memory
+* Minimum RAM = 2 + (0.002 x Subscriber Count) GB
+* Recommended RAM:
+
+| Subscribers   | RAM           |
+| ------------- | ------------- |
+| 100           | 4 GB          |
+| 1,000         | 8 GB          |
+| 5,000         | 16 GB         |
+| 10,000*       | 18 GB         |
+| 50,000*       | 24 GB         |
+
+(* Estimated)
+
+### Network Interface Requirements
+* One management network interface completely separate from the traffic shaping interfaces. Usually this would be the Ethernet interface built in to the motherboard.
+* Dedicated Network Interface Card for Shaping Interfaces
+  * NIC must have 2 or more interfaces for traffic shaping.
+  * NIC must have multiple TX/RX transmit queues. [Here's how to check from the command line](https://serverfault.com/questions/772380/how-to-tell-if-nic-has-multiqueue-enabled).
+  * Known supported cards:
+    * [NVIDIA Mellanox MCX512A-ACAT](https://www.fs.com/products/119649.html)
+    * NVIDIA Mellanox MCX416A-CCAT
+    * [Intel X710](https://www.fs.com/products/75600.html)
+    * Intel X520
+    
+## Get Started
+- [ReadTheDocs](https://libreqos.readthedocs.io/en/develop/docs/SystemRequirements/Compute.html)