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Elektra Web On-Prem Installation System Recommendations
Single Node Kubernetes Cluster
* No disaster recovery *
* No high availability *
Multi Node Kubernetes Cluster
* Disk level High Availability *
* ~5 sec data loss on disaster recovery *
Multi Node Kubernetes Cluster + External SQL Server Always on HADR Cluster
* Disk and Transaction level disaster recovery *
* No data loss on synchronous commit mode *
* ~1 sec data loss on asynchronous commit mode *
Low DB Server 1 x (8 vCPU 16GB Ram 100GB Disk Linux) 3 x (4 vCPU 16GB Ram 200GB Disk Linux) 3 x (4 vCPU 16GB Ram 200GB Disk Windows/Linux)**
Application Servers 3 x (4 vCPU 8GB Ram 50GB Disk Linux)
Backup Disk (GB) 100GB* 100GB* 100GB*
MS SQL Server License Express / Standard / Enterprise Express / Standard / Enterprise Enterprise
Medium DB 1 x (12 vCPU 32GB Ram 200GB Disk Linux) 3 x (8 vCPU 24GB Ram 300GB Disk Linux) 3 x (8 vCPU 24GB Ram 300GB Disk Windows/Linux)**
Application 3 x (4 vCPU 8GB Ram 50GB Disk Linux)
Backup Disk (GB) 150GB* 150GB* 150GB*
MS SQL Server License Standard / Enterprise Standard / Enterprise Enterprise
High DB 1 x (16 vCPU 48GB Ram 300GB Disk Linux) 3 x (12 vCPU 32GB Ram 500GB Disk Linux) 3 x (12 vCPU 32GB Ram 500GB Disk Windows/Linux)**
Application 4 x (4 vCPU 8GB Ram 50GB Disk Linux)
Backup Disk (GB) 200* 200* 200*
SQL Server License Standard / Enterprise Standard / Enterprise Enterprise
Ultra DB 1 x (32 vCPU 96GB Ram 500GB Disk Linux) 3 x (16 vCPU 48GB Ram 500 Disk Linux) 3 x (16 vCPU 48GB Ram 500 Disk Windows/Linux)**
Application 4 x (4 vCPU 8GB Ram 50GB Disk Linux)
Backup Disk (GB) 400GB* 400GB* 400GB*
SQL Server License Standard / Enterprise Standard / Enterprise Enterprise
Third party licenses required for on-prem installation:
- Microsoft SQL Server
- AG Grid
- Bryntum Scheduler
Amount of Ram on SQL Server machines can be increased up to 4GB per Cpu
*: For 30 day backup retention. Also it's recommended to store them on the cloud or in a seperate physical machine.
**: External MSSQL Cluster can be on Windows or Linux machines.
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