Methods used to calculate the number of users that can be borne by the memory of a single server

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Each server's memory is configured in 1:1 mode. In actual calculation, the memory occupied by Domain0 (3 GB by default) and the memory reserved for iCache need to be subtracted from the total memory.

Other related questions:
Methods used to calculate the number of users that can be borne by the CPU of a single server
Because there are different service scenarios, the number of users that can be borne by a single server is subject to the result of the PoC performance test. If no PoC test is performed, you need to analyze the performance data of the customer's actual physical PC. To download the information collection and analysis tool, visit http://support.huawei.com/onlinetool/datums/fusioncloud/comptool/index.en.jsp.

How Many Firewalls Can a User Have?

A user can have a maximum of 200 firewalls. It is recommended that you configure a maximum of 20 inbound or outbound rules for each firewall. If more than 20 inbound or outbound rules are configured, the forwarding performance will deteriorate.


Method used to calculate RAID capacity
If the number of RAID member disks is N (excluding hot spare disks), available capacity of RAID 0 = N x disk capacity. Available capacity of RAID 1 = N x Disk capacity/Number of mirror groups Available capacity of RAID 3 = (N-1) x Disk capacity Available capacity of RAID 5 = (N-1) x Disk capacity Available capacity of RAID 6 = (N-2) x Disk capacity Available capacity of RAID 10 = N x Disk capacity/Number of mirror groups Available capacity of RAID 50 = (N-2) x Disk capacity

Method used to calculate fiber loss
In general, the fiber loss budget for the 1310 nm wavelength is 0.45 dB/km and that for the 1550 nm wavelength is 0.275 dB/km.

Method used to calculate the RGU position
The installation point of the buried RGU on the fiber span leading to the receive-end station must be carefully calculated. The designed distance of the fiber span from the RGU to the receive-end station, and the designed loss of this post-RGU fiber span must be determined based on the system configurations and the total line loss (deriving from factors such as the span length and fiber loss factor).

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