Virtual Machine Recommendations and Limits
Virtual machines (VMs) require certain CPU core resources. In addition, only some models of dual-node systems allow both High Availability (HA) and Fault Tolerant (FT) operation, while others allow only HA operation. (Single-node systems do not allow HA or FT operation.)
Systems and HA or FT Operation
| System Model |
HA Operation |
FT Operation |
| 100i
|
Yes |
No |
| 110i
|
Yes |
Yes |
For more information, see Modes of Operation.
Recommended Number of CPU Cores
Stratus recommends using only as many threads for workloads as physical threads on a ztC Edge system. The ztC Edge 100i system has 8 physical threads, total.
The ztC Edge 110i system has 12 physical threads, total.
The number of cores recommended for ztC Edge workloads depends upon the number of vCPUs in each VM and the types of the VMs as described below:
Examples
The following examples apply to ztC Edge 100i systems:
- Four 2-vCPU HA guests typically require 8 threads, total.
- Two 3-vCPU HA guest and one 2-VCPU HA guest typically require 8 threads, total.
- Two 4-vCPU HA guests typically require 8 threads, total.
- One 8-vCPU HA guest typically requires 8 threads, total.
The following examples apply to ztC Edge 110i systems in addition to the examples above:
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