The article shows the minimum system requirements for installing and running ELMA365 On-Premises Enterprise. The information provided below is not a guide for server configuration. Use it only to estimate the compatibility of your company’s equipment with the ELMA365 software. The actual parameters may vary greatly depending on the workload profile and are selected according to customer requirements.
начало внимание
In this article, the term user is used for an ELMA365 account. In licensing terms, it can be a named or a floating license or an integration with an external system.
конец внимание
ELMA365 server
The table below lists software and hardware requirements for the installation of the ELMA365 server.
Operating System |
Linux, Ubuntu Server 22.04 or Debian 11 recommended |
Minimum hardware requirements (for 500 users)* |
Application server CPU: x86-x64, 10 or more vCPUs. Hard drive**: 100 GB, write IOPS 2000 or more. RAM: 16 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for server resources and the number of simultaneously connected users increases:
One physical server can support up to 10,000 users (if the number of CPU cores and the amount of RAM are proportionally increased). However, system operation under such load is not recommended. This information is provided only to help you estimate a workload limit when designing your local IT infrastructure. When planning the server upgrade under moderate workload, the following approach to hardware sizing is optimal: RAM: +8 GB for each additional 500 users. CPU: +4 cores for each additional 500 users. The number of floating license users is estimated by the client or determined by analyzing the company’s operations. |
*A backup system must be located on a separate server. The storage capacity is calculated based on the number and size of backup copies.
** When installed to a cluster, the application’s performance and stability largely depend on the hard drive’s speed. A slow hard drive increases the request latency in the cluster and can cause it to become unstable. Read more about checking a hard drive’s performance in Test the hard drive’s performance.
If you use hypervisors, for correct operation of Kubernetes nodes and ELMA365, you need to allocate a fixed amount of RAM in the virtual machine’s settings. This amount must meet the system requirements above.
It is not recommended to use dynamic memory allocation (shared memory or “from X GB to Y GB”). Virtual machines with dynamically allocated memory operate more slowly, and the hypervisor responds incorrectly to OS memory requirements.
Data storage server
The table below lists software and hardware requirements for installing data storing and processing servers of the ELMA365 system.
PostgreSQL
Minimum hardware requirements (for 500 users)* |
PostgreSQL database server The server stores main system data: users, app items, settings of workspaces and apps, business processes, pages, widgets, tasks, events, and other configurations. DBMS: PostgreSQL v10–15. CPU: x86-x64, 4 or more vCPUs. Hard drive: 200 GB, write IOPS 2000 or more. RAM: 8 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for server resources and the number of simultaneously connected users increases:
When planning the server upgrade under moderate workload, the following approach to hardware sizing is optimal: RAM: +4 GB for each additional 500 users. CPU: +2 cores for each additional 500 users. The required increase in disk storage capacity is estimated by the client or determined by analyzing the company’s operations. |
MongoDB
Minimum hardware requirements (for 500 users)* |
MongoDB database server The server stores unstructured system settings and data from live chats and activity streams. DBMS: MongoDB v3.6–5.0. CPU: x86-x64, 4 or more vCPUs; MongoDB 5.0 requires using the AVX instruction set. Hard drive: 200 GB, write IOPS 2000 or more. RAM: 8 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for server resources and the number of simultaneously connected users increases:
When planning the server upgrade under moderate workload, the following approach to hardware sizing is optimal: RAM: +4 GB for each additional 500 users. CPU: +2 cores for each additional 500 users. The required increase in disk storage capacity is estimated by the client or determined by analyzing the company’s operations. |
RabbitMQ
Minimum hardware requirements (for 500 users)* |
RabbitMQ event bus server The server provides task queues among services. It doesn’t store data permanently. MQ: RabbitMQ v3.9.15 or above. CPU: x86-x64, 4 or more vCPUs. Hard drive: 40 GB, write IOPS 2000 or more. RAM: 8 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for server resources and the number of simultaneously connected users increases:
When planning the server upgrade under moderate workload, the following approach to hardware sizing is optimal: RAM: +4 GB for each additional 500 users. CPU: +2 cores for each additional 500 users. The required increase in disk storage capacity is estimated by the client or determined by analyzing the company’s operations. |
Redis
Minimum hardware requirements (for 500 users)* |
Redis cache server The server is used for caching processed information. It doesn’t store data permanently. Cache: Redis v5.0 or v6.2. CPU: x86-x64, 2 or more vCPUs. Hard drive: 40 GB, write IOPS 2000 or more. RAM: 4 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for server resources and the number of simultaneously connected users increases:
When planning the server upgrade under moderate workload, the following approach to hardware sizing is optimal: RAM: +4 GB for each additional 500 users. CPU: +2 cores for each additional 500 users. |
Minio S3
Minimum hardware requirements (for 500 users)* |
MinIO S3 object storage server You can use any S3-compatible object storage software. We recommend MinIO as it is easy to install and support. S3: Minio S3 v2022.8.8. CPU: x86-x64, 2 or more vCPUs. Hard drive: 40 GB, write IOPS 2000 or more. For proper Minio S3 server operation, you need to set up several servers in the cluster or add several hard drives to the server. You can read more in the MinIO official documentation. RAM: 2 GB or more. Internet connection: LAN 1 Gbit/sec or faster. If the demand for file download and file generation increases:
When the number of file download and file generation operations increases on the server, the following approach to hardware sizing is optimal: RAM: +2 GB for each additional 1,000 users. CPU: +1 core for each additional 1,000 users. The required increase in disk storage capacity is estimated by the client or determined by analyzing the company’s operations. |
*A backup system must be located on a separate server. The storage capacity is calculated based on the number and size of backup copies.
Minimum hardware requirements for different number of users
The tables below show ELMA365 On-Premises Enterprise hardware requirements for 500, 1,000, 2,000, 5,000, and 10,000 users. The term user here is used to reference a person or an external automated system that has an account and a permission to work with ELMA365.
The actual parameters may vary depending on the real use scenarios and the application of the system in your company.
500 users
500 users |
|||
Service |
RAM, GB |
SSD, GB** |
|
ELMA365 server |
8 |
16 |
100 |
PostgreSQL server |
4 |
8 |
100 |
MongoDB server |
4 |
8 |
50 |
RabbitMQ server |
4 |
8 |
40 |
Redis server |
2 |
4 |
50 |
MinIO S3 server |
2 |
2 |
100 |
HAProxy server |
2 |
2 |
30 |
Total |
26 |
48 |
470 |
1,000 users
1,000 users |
|||
Service |
RAM, GB |
SSD, GB** |
|
ELMA365 server |
12 |
16 |
100 |
PostgreSQL server |
6 |
12 |
100 |
MongoDB server |
4 |
8 |
50 |
RabbitMQ server |
4 |
8 |
40 |
Redis server |
2 |
4 |
50 |
MinIO S3 server |
2 |
2 |
100 |
HAProxy server |
2 |
2 |
30 |
Total |
32 |
52 |
470 |
2,000 users
2,000 users |
|||
Service |
RAM, GB |
SSD, GB** |
|
ELMA365 server |
16 |
24 |
100 |
PostgreSQL server |
8 |
16 |
100 |
MongoDB server |
6 |
8 |
50 |
RabbitMQ server |
4 |
8 |
40 |
Redis server |
2 |
8 |
50 |
MinIO S3 server |
2 |
4 |
100 |
HAProxy server |
2 |
2 |
30 |
Total |
40 |
70 |
470 |
5,000 users
5,000 users |
|||
Service |
RAM, GB |
SSD, GB** |
|
ELMA365 server |
16 |
32 |
100 |
PostgreSQL server (primary) |
4 |
16 |
200 |
PostgreSQL server (subordinate) |
4 |
16 |
200 |
PostgreSQL server (subordinate) |
4 |
16 |
200 |
MongoDB server (primary) |
2 |
8 |
100 |
MongoDB server (subordinate) |
2 |
8 |
100 |
MongoDB server (subordinate) |
2 |
8 |
100 |
RabbitMQ server |
4 |
8 |
40 |
Redis server |
2 |
8 |
50 |
MinIO S3 server |
2 |
8 |
200 |
HAProxy server |
2 |
2 |
30 |
Total |
44 |
130 |
1,320 |
10,000 users
10,000 users |
|||
Service |
RAM, GB |
SSD, GB** |
|
ELMA365 server |
32 |
64 |
100 |
PostgreSQL server (primary) |
8 |
32 |
250 |
PostgreSQL server (subordinate) |
8 |
32 |
250 |
PostgreSQL server (subordinate) |
8 |
32 |
250 |
MongoDB server (primary) |
2 |
8 |
200 |
MongoDB server (subordinate) |
2 |
8 |
200 |
MongoDB server (subordinate) |
2 |
8 |
200 |
RabbitMQ server |
4 |
8 |
40 |
Redis server |
2 |
8 |
50 |
MinIO S3 server |
2 |
8 |
500 |
HAProxy server |
2 |
2 |
30 |
Total |
72 |
210 |
2,070 |
*A vCPU is a hyperthreading core of the physical CPU. For cloud providers, it is a vCPU or vCore.
** The SSD space that needs to be provided directly depends on the needs of your company. It is determined individually for each service in the system depending on the amount of data that is supposed to be stored in them.
To determine the exact system requirements for your configuration or receive information on hardware requirements for 10,000+ users, please contact our sales reps at inbox@elma365.com.
Fault-tolerant server architecture
To build a fault-tolerant architecture and optimize server load balancing, it is possible to deploy multiple servers in a cluster. The application server and the data storage and processing servers are scaled independently.
ELMA365 cluster
The cluster provides load balancing for applications, as well as replication and scaling of internal services. This allows setting up a fault-tolerant solution that can survive the failure of one server. For seamless servers connectivity, a ready-made solution is used.
You need to have at least three servers to set up the cluster.
PostgreSQL cluster
PostgreSQL cluster is formed by a primary server and replica(s). One server becomes the main one and sends its data to the other servers. You can read more about setting up and operating the cluster in PostgreSQL official documentation.
You need at least two servers to set up the cluster.
MongoDB cluster
Several servers are seamlessly combined into a fault-tolerant cluster providing data replication and redistribution. For more details, see MongoDB official documentation.
You need at least three servers to set up the cluster.
RabbitMQ cluster
Several servers combined into a cluster balance message processing and delivery. For more details, see RabbitMQ official documentation.
You need at least three servers to set up the cluster.
Redis cluster
Several servers are joined into a primary/replica cluster. One server becomes the main one and sends its data to the other servers. For more details, see Redis official documentation.
You need at least three servers to set up the cluster.
MinIO S3 cluster
Several servers are joined into a fault-tolerant cluster providing data replication and redistribution. For more details, see MinIO official documentation.
You need at least four servers to set up a cluster.
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