Capacity Considerations
Parallels conducted in-house Parallels RAS scalability testing using a total of two HP DL360 consisting of the following hardware components:
CPU
2x Xeon E5-2670 v1, 2.6GHz, 20 MB L3, 115W TDP
RAM
128 GB, 16x 8 GB Micron DDR-4-2100 at 1600MHz
HDD
Western Digital Blue 1 TB SSD
The following Parallels RAS lab environment was used:
A farm consists of 1 site.
Single hop DMZ.
Each Secure Gateway can host 1200 sessions in Gateway SSL mode (enumeration and proxying RDP session in SSL + User Portal).
Each Secure Gateway has User Portal enabled and balanced by HALB using the same port 443 (When using URL https://HALB-VIP/userportal/ the incoming connections will be distributed appropriately because SSL session persistence is in a place).
250 users
Parallels RAS was deployed on VMware vSphere 6.5 on Windows 2016 Server as follows:
RAS Connection Broker
2
2
4 GB
RAS Secure Gateway
2
2
4 GB
High Availability Load Balancing
2
1
2 GB
RD Session Host
6
6
24 GB
All components doubled for redundancy.
RDSH N+1 for redundancy.
The above configuration has been tested with both our internal tools and Login VSI. For more details, you could read the Parallels RAS Scalability Testing with Login VSI paper, which is available at the following URL: https://download.parallels.com/ras/v18/docs/en_US/Parallels-RAS-Scalability-Testing-Login-VSI.pdf
500 users
Parallels RAS was deployed on VMware vSphere 6.5 on Windows 2016 Server as follows:
RAS Connection Broker
2
2
4 GB
RAS Secure Gateway
2
2
4 GB
High Availability Load Balancing
2
1
2 GB
RD Session Host
12
6
24 GB
All components doubled for redundancy.
RDSH N+2 for redundancy.
1000 users
RAS Connection Broker
2
2
4 GB
RAS Secure Gateway
2
2
4 GB
High Availability Load Balancing
2
1
2 GB
RD Session Host
24
6
24 GB
All components doubled for redundancy.
RDSH N+4 for redundancy.