LPAR2RRD server HW sizing
Sizing per each platform and defined environment size.
Use it as a starting point for sizing. Be ready to add additional HW resources if it appears to not be enough.
Sizing is done per technology and expect just one technology is monitored.
If you use more technologies or bigger setup then you can use this formulas for CPU (Disk space is summary of them):
- More technologies: total = technology1 + ( technology2 / 3)
- Twice bigger setup than in below table: add 1/3 of CPU resources in the table per each 100%
Always start with 4 CPU cores, 12-16 GB RAM and 100 GB disk space.
Most important are CPU resources and disk sizing.
There is not big requirements for Memory (mostly for FS caching purposes). Allocate 20GB RAM for each 5000 LPARs/VMs/Hosts.
Table shows estimation how much resources rewquires each configuration.
| Technology | Environment Size | Agent less | With the OS agent |
|---|
| CPU [Core] | Disk space [GB] | CPU [Core] | Disk space [GB] |
|---|
| IBM Power Systems | 20 Servers / Frames | 2 | 40 | 3 | 100 |
| IBM i agent | 20 LPARs | - | - | 0.2 | 5 |
| VMware | 1000 VMs | 2 | 100 | 3 | 150 |
| Nutanix | 1000 VMs | 2 | 5 | - | - |
| Oracle DB | 100 DBs | 2 | 10 | - | - |
| OracleVM | 1000 VMs | 2 | 5 | - | - |
| Linux stand-alone | 1000 Hosts | - | - | 2 | 10 |
| oVirt/RHV | 1000 VMs | 2 | 2 | 3 | 5 |
| XenServer | 1000 VMs | 2 | 2 | 3 | 5 |
| Oracle Solaris | 1000 LDOMs | - | - | 2 | 5 |
| MS Windows & Hyper-V | 1000 Win hosts | - | - | 2 | 5 |
| Hitachi Compute Blade | 10 Blades | - | - | 0.1 | 1 |
Real examples
- 20 IBM Power frames + 3500 VMware VMs, both with OS agents: 4 CPU cores, 16 GB RAM, 400GB disk space
All Unix operating systems are supported for hosting of LPAR2RRD server.
However preferable is
Linux (RHEL 7, CentOS 7), you might face difficulties in installation of prerequisite packages on other OS (especially on AIX/Solaris).