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  2. BlackBerry AtHoc
  3. 7.15
  4. BlackBerry AtHoc Capacity Planning Guidelines
  5. BlackBerry AtHoc compute requirements
  6. Virtual environment

Virtual environment

VMs needed per customer category
Customer category
Application server VMs
DB server VMs
Small
1
1
Medium
2
1
Large
4
1
vCPUs needed per customer category
Customer category
vCPUs per App VM
vCPUs per DB VM
Small
4
8
Medium
4 to 6
8
Large
6
12
vCPU reservations or shares are not strictly required for
BlackBerry AtHoc
 to function in a virtual environment. However, they may be necessary on a case-by-case basis, depending on the VM host workload and provisioning strategy used by the VM host administrator. In general, if VM host CPUs are saturated (consistently over 80% usage), reservations may be required for
BlackBerry AtHoc
 to perform adequately.
vRAM needed per customer category
Customer category
vRAM per App VM (GB)
vRAM per DB VM (GB)
Small
8
32
Medium
8
32
Large
8
32
BlackBerry AtHoc
 requires vRAM reservations to be placed on the SQL virtual machine.
BlackBerry AtHoc
 database transactions are very latency-sensitive when they support large numbers of users. The
BlackBerry AtHoc
 virtual machines can easily be affected by waiting on the hypervisor to free up resources from other virtual machines running on the same host.
You should make vRAM reservations on at least 70% of the total VM RAM allocation. Additionally, you should give a maximum allocation for the Microsoft SQL Server memory.