This chapter contains the configuration maximums for Oracle Private Cloud Appliance. The limits presented in the following tables represent tested, recommended limits, and are fully supported by Oracle.
Table 3.1 Virtual Machine Maximums
Item | Maximum | Notes |
|---|---|---|
Virtual CPUs (X6-2) | 44 | Maximum for Oracle Server X6-2. |
Virtual CPUs (X5-2) | 36 | Maximum for Oracle Server X5-2. |
Virtual CPUs (X4-2) | 16 | Maximum for Sun Server X4-2. |
Virtual CPUs (X3-2) | 16 | Maximum for Sun Server X3-2. |
Virtual RAM (32-bit guest) | 63GB | |
Virtual RAM (64-bit guest) | 750GB |
The maximum is equivalent to the maximum installed
amount of RAM (768GB) minus the memory used by
|
Virtual NICs (paravirtualized guest) | 31 | |
Virtual NICs (hardware virtualized guest) | 8 | |
Virtual Disks (paravirtualized guest) | PVM: 104 PVHVM: 107 | |
Disks: virtual and other (hardware virtualized guest) | 4 | In the case of hardware virtualized guests, "disks" refers to virtual disks as well as IDE and SCSI hard drives, and cd-rom drives. |
These maximums do not account for CPUs allocated to any other domains, such as the control domain. The hypervisor can allocate subsets of the overall CPU, memory, and I/O resources of a server to any given logical domain.
Virtual Machine maximums assume a single virtual machine using all available resources.
Table 3.2 Oracle VM Server Maximums
Item | Maximum | Notes |
|---|---|---|
CPUs (X6-2) | 44 | This is the number of CPUs available in the Oracle Server X6-2. |
CPUs (X5-2) | 36 | This is the number of CPUs available in the Oracle Server X5-2. |
CPUs (X4-2, X3-2) | 16 | This is the number of CPUs available in the Sun Server X4-2 and Sun Server X3-2. |
RAM (X6-2, X5-2) | 768GB | This is the maximum installed amount of RAM in the Oracle Server X6-2 and Oracle Server X5-2. |
RAM (X4-2, X3-2) | 256GB | This is the maximum installed amount of RAM in the Sun Server X4-2 and Sun Server X3-2. |
Virtual Machines | 128 |
A limited amount of RAM is required by the hypervisor.
Table 3.3 Server Pool and Cluster Maximums
Item | Maximum | Notes |
|---|---|---|
Oracle VM Servers in a clustered server pool | 30 | In a base rack configuration, the maximum number of installed compute nodes is 25. |
Clusters per Oracle PCA | 8 | This maximum does not include the default server pool. |
Table 3.4 Storage Maximums
Item | Maximum | Notes |
|---|---|---|
HBAs per Compute Node | 8 | This number is based on the 4 default HBAs plus 4 optional customer-defined HBAs. |
LUNs per Server | 256 | |
Paths per Server | 1024 | This is the main limitation. Examples of supported configuration are: 256 LUNs with 4 paths each, or 128 LUNs with 8 paths each. |
Paths per LUN | 8 | |
OCFS2 volume size | 64TB | |
Files per OCFS2 volume | 30,000 | |
Virtual Disk size | 10TB | The maximum is determined by the hardware capacity. |
Virtual IDE drives per device | 4 |
Table 3.5 Networking Maximums
Item | Maximum | Notes |
|---|---|---|
NICs per Bond | 2 | The limit is 255 per bond or aggregate. |
Bonds per Compute Node | 10 | This maximum applies to custom networks. It does not include the default network configuration, which consists of 5 bonds and 1 GbE connection. Oracle PCA accepts a maximum of 3 custom internal networks and 7 custom external networks. |
VLANs per Server Pool | 128 | If the number of VLANs is larger than 128 the boot times of the servers are severely impacted. The maximum is a total number across all internal, external, default and custom networks combined. |
Packet Size (MTU) | Ethernet: 9000 IPoIB: 64000 | The default maximum transmission unit for Ethernet bonds/ports is 9000 bytes. IPoIB traffic on the storage network is configured at a default MTU of 64000 bytes. |