6.1.2 Oracle Linux KVM Deployment Specifications and Limits

This topic describes the deployment specifications and limits for using Oracle Linux KVM on Oracle Exadata Database Machine.

Table 6-1 Oracle Linux KVM Deployment Specifications and Limits for Exadata X11M

Attribute Value for Oracle Exadata Database Server X11M Value for Oracle Exadata Database Server X11M-Z

Maximum number of Oracle Linux KVM guests on each database server

50

4

Total physical memory on each database server

Minimum: 512 GB

Maximum: 3072 GB

Minimum: 768 GB

Maximum: 1152 GB

Total available memory on each database server for all Oracle Linux KVM guests

Minimum: 440 GB

Maximum: 2800 GB

Minimum: 660 GB

Maximum: 1010 GB

Minimum memory limit for each Oracle Linux KVM guest

16 GB

16 GB

Total CPU cores (vCPUs) on each database server

192 (384)

32 (64)

CPU core (vCPU) limits for each Oracle Linux KVM guest

Minimum: 2 (4)

Maximum: 190 (380)

Note: 2 CPU cores are reserved for the KVM host.

Minimum: 2 (4)

Maximum: 31 (62)

Note: 1 CPU core is reserved for the KVM host.

Over-provisioning limit for CPU cores (vCPUs) on each database server for all Oracle Linux KVM guests

Note: CPU over-provisioning may cause performance conflicts.

380 (760)

Note:
  • CPU over-provisioning is not supported on servers containing 512 GB of RAM.
  • CPU oversubscription for KVM guests is not permitted when capacity-on-demand is used on Exadata X11M KVM hosts. CPU oversubscription is only allowed on Exadata X11M when all CPU cores are active on the KVM hosts.

62 (124)

Note:
  • CPU oversubscription for KVM guests is not permitted when capacity-on-demand is used on Exadata X11M-Z KVM hosts. CPU oversubscription is only allowed on Exadata X11M-Z when all CPU cores are active on the KVM hosts.

Total usable disk storage for Oracle Linux KVM guests on each database server

Minimum: 3.40 TB

Maximum: 6.97 TB

Minimum: 3.40 TB

Maximum: 6.97 TB

Table 6-2 Oracle Linux KVM Deployment Specifications and Limits for Exadata X10M

Attribute Value for X10M Value for X10M Eighth Rack

Maximum number of Oracle Linux KVM guests on each database server

Starting with Oracle Exadata System Software release 24.1.0: 50

With Oracle Exadata System Software release 23.1.X: 12

4

Total physical memory on each database server

Minimum: 512 GB

Maximum: 3072 GB

Minimum: 384 GB

Maximum: 1152 GB

Total available memory on each database server for all Oracle Linux KVM guests

Minimum: 440 GB

Maximum: 2800 GB

Minimum: 328 GB

Maximum: 1010 GB

Minimum memory limit for each Oracle Linux KVM guest

16 GB

16 GB

Total CPU cores (vCPUs) on each database server

192 (384)

32 (64)

CPU core (vCPU) limits for each Oracle Linux KVM guest

Minimum: 2 (4)

Maximum: 190 (380)

Note: 2 CPU cores are reserved for the KVM host.

Minimum: 2 (4)

Maximum: 31 (62)

Note: 1 CPU core is reserved for the KVM host.

Over-provisioning limit for CPU cores (vCPUs) on each database server for all Oracle Linux KVM guests

Note: CPU over-provisioning may cause performance conflicts.

380 (760)

Note:
  • CPU over-provisioning is not supported on servers containing 512 GB of RAM.
  • CPU oversubscription for KVM guests is not permitted when capacity-on-demand is used on Exadata X10M KVM hosts. CPU oversubscription is only allowed on Exadata X10M when all CPU cores are active on the KVM hosts.

62 (124)

Note:
  • CPU oversubscription for KVM guests is not permitted when capacity-on-demand is used on Exadata X10M KVM hosts. CPU oversubscription is only allowed on Exadata X10M when all CPU cores are active on the KVM hosts.

Total usable disk storage for Oracle Linux KVM guests on each database server

Minimum: 3.40 TB

Maximum: 6.97 TB

Minimum: 3.40 TB

Maximum: 6.97 TB

Table 6-3 Oracle Linux KVM Deployment Specifications and Limits for Exadata X9M-2

Attribute Value for X9M-2 Value for X9M-2 Eighth Rack

Maximum number of Oracle Linux KVM guests on each database server

12

4

Total physical memory on each database server

Minimum: 512 GB

Maximum: 2048 GB

Minimum: 384 GB

Maximum: 1024 GB

Total available memory on each database server for all Oracle Linux KVM guests

Minimum: 440 GB

Maximum: 1870 GB

Minimum: 328 GB

Maximum: 920 GB

Minimum memory limit for each Oracle Linux KVM guest

16 GB

16 GB

Total CPU cores (vCPUs) on each database server

64 (128)

32 (64)

CPU core (vCPU) limits for each Oracle Linux KVM guest

Minimum: 2 (4)

Maximum: 62 (124)

Note: 2 CPU cores are reserved for the KVM host.

Minimum: 2 (4)

Maximum: 31 (62)

Note: 1 CPU core is reserved for the KVM host.

Over-provisioning limit for CPU cores (vCPUs) on each database server for all Oracle Linux KVM guests

Note: CPU over-provisioning may cause performance conflicts.

124 (248)

62 (124)

Total usable disk storage for Oracle Linux KVM guests on each database server

Minimum: 3.40 TB

Maximum: 6.97 TB

Minimum: 3.40 TB

Maximum: 6.97 TB

Table 6-4 Oracle Linux KVM Deployment Specifications and Limits for Exadata X8M-2

Attribute Value for X8M-2 Value for X8M-2 Eighth Rack

Maximum number of Oracle Linux KVM guests on each database server

12

Note: The limit is 8 on servers that contain 384 GB of RAM and are configured to support Exadata Secure RDMA Fabric Isolation.

4

Total physical memory on each database server

Minimum: 384 GB

Maximum: 1536 GB

Minimum: 384 GB

Maximum: 768 GB

Total available memory on each database server for all Oracle Linux KVM guests

Minimum: 328 GB

Maximum: 1390 GB

Minimum: 328 GB

Maximum: 660 GB

Minimum memory limit for each Oracle Linux KVM guest

16 GB

16 GB

Total CPU cores (vCPUs) on each database server

48 (96)

24 (48)

CPU core (vCPU) limits for each Oracle Linux KVM guest

Minimum: 2 (4)

Maximum: 46 (92)

Note: 2 CPU cores are reserved for the KVM host.

Minimum: 2 (4)

Maximum: 23 (46)

Note: 1 CPU core is reserved for the KVM host.

Over-provisioning limit for CPU cores (vCPUs) on each database server for all Oracle Linux KVM guests

Note: CPU over-provisioning may cause performance conflicts.

92 (184)

46 (92)

Total usable disk storage for Oracle Linux KVM guests on each database server

Minimum: 3.15 TB

Maximum: 6.3 TB

Minimum: 3.15 TB

Maximum: 6.3 TB

Note:

1 CPU core = 1 OCPU = 2 vCPUs = 2 hyper-threads

Table 6-5 Oracle Linux KVM Available Memory Limits

Total installed memory DIMM configuration Applicable Exadata database server models Total available memory for Oracle Linux KVM guests

3072 GB

24 x 128 GB
  • X11M
  • X10M

2800 GB

2304 GB

24 x 96 GB
  • X11M
  • X10M

2090 GB

2048 GB

32 x 64 GB
  • X9M-2

1870 GB

1536 GB

24 x 64 GB
  • X11M
  • X10M
  • X9M-2
  • X8M-2

1390 GB

1152 GB

12 x 96 GB
  • X11M-Z
  • X10M Eighth Rack

1010 GB

1024 GB

16 x 64 GB
  • X9M-2
  • X9M-2 Eighth Rack

920 GB

768 GB

12 x 64 GB
  • X11M-Z
  • X10M Eighth Rack
  • X8M-2
  • X8M-2 Eighth Rack

660 GB

512 GB

16 x 32 GB
  • X11M
  • X10M
  • X9M-2

440 GB

384 GB

12 x 32 GB
  • X10M Eighth Rack
  • X9M-2 Eighth Rack
  • X8M-2
  • X8M-2 Eighth Rack

328 GB

Parent topic: Oracle Linux KVM and Oracle Exadata