Consideration:  On/Off CoD provides a concurrent hardware upgrade that results in more  capacity being made available to a system configuration. Extra planning tasks are required  for nondisruptive upgrades. For more information, see “Guidelines to avoid disruptive  upgrades” on page 378.  To participate in this offering, you must accept contractual terms for purchasing capacity  through the Resource Link, establish a profile, and install an On/Off CoD enablement feature  on the system. Later, you can concurrently install temporary capacity up to the limits in On/Off  CoD and use it for up to 180 days.  Monitoring occurs through the system call-home facility. An invoice is generated if the  capacity is enabled during the calendar month. You are billed for the use of temporary  capacity until the system is returned to the original configuration. Remove the enablement  code if the On/Off CoD support is no longer needed. On/Off CoD orders can be pre-staged in Resource Link to allow multiple optional  configurations. The pricing of the orders is done at the time that you order them, and the  pricing can vary from quarter to quarter. Staged orders can have different pricing.  When the order is downloaded and activated, the daily costs are based on the pricing at the  time of the order. The staged orders do not have to be installed in the order sequence. If a  staged order is installed out of sequence and later a higher-priced order is staged, the daily  cost is based on the lower price.  Another possibility is to store multiple On/Off CoD LICCC records on the SE with the same or  different capacities, which gives you greater flexibility to enable quickly needed temporary  capacity. Each record is easily identified with descriptive names, and you can select from a  list of records that can be activated. Resource Link provides the interface to order a dynamic upgrade for a specific system. You  can create, cancel, and view the order. Configuration rules are enforced, and only valid  configurations are generated based on the configuration of the individual system. After you  complete the prerequisites, orders for the On/Off CoD can be placed. The order process uses  the CIU facility on Resource Link. Memory and channels are not supported on On/Off CoD. Chapter 8. System upgrades  359