You can reserve COD licenses for specific domains by using the setcod command. After power on, reserved licenses are first allocated to their domains, and then remaining licenses are allocated on a first-come, first-served basis to the remaining resources. When a domain is powered off, the reverse happens: first the unreserved licenses are released to the pool, then the reserved licenses are released.

For example, assume your server had 10 COD licenses and you reserved them for these domains:

PROC RTUs reserved for domain 0: 4

PROC RTUs reserved for domain 1: 2

PROC RTUs reserved for domain 2: 0

PROC RTUs reserved for domain 3: 0

When the domains were first powered on, four licenses would be assigned to domain 0 and two licenses to domain 1. The remaining four licenses would be available on a first-come, first-served basis to all four domains (0, 1, 2, and 3).

Headroom Management

Caution – Before using headroom, be sure to read and understand the relevant topics in the SPARC Enterprise M4000/M5000/M8000/M9000 Capacity on Demand (COD) User’s Guide.

Headroom is the capability to use up to four COD processors per server before entering the license information.

By default, COD resources arrive with headroom disabled. You can use the setcod command to establish it. However, if all your COD resources are already licensed, configuring headroom will have no effect. In that case, you need to install additional COD boards to retain your headroom capacity. You can also reduce or disable headroom at any time.

While headroom is in use, warning messages appear on the console every four hours. Once you either deactivate the COD board or obtain a license for the resources and enter the license keys, the warning messages stop. When a license key is added, the headroom is automatically reduced by the quantity provided by the license key.

Chapter 7 Capacity on Demand

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