Recommended hardware
Specifications
Main principle - as powerful as possible. For single server solution we recommend:
| Component | Minimum requirement | Recommended | We provide as Hosted Solution | Comment |
| CPU | 4c/8t Xeon | any higher CPU, at least 8 cores | Intel(R) Xeon(R) CPU E3-1245-1270v6 / AMD Ryzen™ 5 3600 | |
| RAM | 8 GB | 32 GB | 32/64 GB | |
| HDD | 100 Gb SSD (Solid State Drives) all space must be assigned to / partition; ext3 file system; 500+ GB for M2 systems | 500+ Gb, SSD (Solid State Drives)/m2 nvme, RAID Type 1 all space must be assigned to / partition; ext3 file system | 2 x 240/512 GB SSD RAID 1 | |
| OS | Centos 7 x86_64 | Centos 7 x86_64 | Centos 7 x86_64 | OS timezone must be set to UTC or at least to Timezone which does not have daylight saving |
| NIC | Any | M2/M4: Intel I210, I350, X550T (if you need over 700 concurrent calls) | M2/M4: Intel I210, I350 | Realtek RTL8111/8168/8411, Intel 82574L are weak NICs, not recommended |
| Brand | Any | Intel, DELL, HP, Fujitsu | Intel/AMD |
It is required to have clean server without any additional packets installed.
Default Centos kernel is required for all functionality to work correctly.
Requirements for specific elements in a multi-server deployment
Asterisk/Core server: same requirements as above, except SSD would not increase performance so it is not needed and 4 GB of RAM is sufficient. CPU is most important component here. If Proxy solution is in use, Asterisks cannot be under NAT, it must have Public IP for SIP and RTP traffic. Must be located as close as possible to Database server to avoid problems caused by latency.
Database server: same requirements as above and SSD is highly recommended here. SSD is must if system has more than one Asterisk server. There should be 100GB or more space as database grows fast on high traffic. It is recommended to start with at least 400GB on M2 systems. Fast data storage device and CPU are most important here. If more than one Database server is in use, UPS (Uninterruptible Power Supply) devices must be used for these servers, otherwise power outage would cause broken replication. 8Gb RAM minimum. Must be located as close as possible to Asterisk server to avoid problems caused by latency.
GUI server: same requirements as above, except SSD would not increase performance a lot. HDD with more space is recommended here.
Proxy server: same requirements as above, except 4 GB of RAM and 40 GB on HDD will be enough here. SSD would not increase performance. Proxy server cannot be under NAT, it must have Public IP for SIP traffic.
Requirements for redundant deployment
Requirements for network to which servers are connected:
- Both servers should be within same subnet.
- Both servers should be able to broadcast packets to UDP 694 port.
- Both servers should be able to receive packets broadcasted by other server.
- There should be Virtual IP reserved in Subnet.
- Both servers should be able to work with that Virtual IP (only one server at same time).
If any of requirements above are not met, in some cases it is possible to adapt different network configurations or services (like "IP Failover").
In this case, you need to develop and manage special scripts or third-party software to achieve this (Kolmisoft does not provide this service).
Virtualization
MOR system was tested and working (with low call capacity) on the following Virtualization technologies:
- VMware
- VirtualBox
- XEN
- AWS
- Azure
In general, we do not recommend using Virtual machines for multi-server solutions, especially when those Virtual machines are running on the same host. Best multi-server system performance is achieved when running on Dedicated servers. If a multi-server system is chosen to get better calls capacity, then Dedicated servers must be used too.
Only GUI server on VM is acceptable.
FAQ
- Do you have the provision of STUN and TURN servers on your end?
No, we do not provide STUN servers. MOR should receive Public IPs on SIP headers. NAT traversal should be done on customer's side.
