IBM DS8000 manual Capacity planning, Scenarios for managing licensing, Logical configurations

Activation refers to the retrieval and installation of the feature activation code into the DS8000 system. The feature activation code is obtained using the DSFA Web site and is based on the license scope and license value.

The high-level steps for storage feature activation are:

￿Have machine-related information available (model, serial number, and machine signature). This information is obtained from the DS8000 Storage Manager.

￿Log onto the DSFA Web site.

￿Obtain feature activation keys by completing the machine-related information. The feature activation keys can either be directly retrieved, saved onto a diskette, or they can be written down.

￿Complete feature key activation by logging onto your DS8000 Storage Manager application and apply the keys to the storage unit.

9.3.8Scenarios for managing licensing

There are many ways to manage the license of a DS8000. Some scenarios may include adding storage capacity to an existing licensed function or reallocating a license between storage images.

Adding storage capacity to an existing licensed function

Assume you initially purchased a 2244 Point-in-Time Copy feature (2244–PTC) for 25 terabytes. After several months, you need an additional 20 TB for your Point-in-Time Copy operations. To increase storage for the feature requires that you obtain a new license key, and not install a larger license. However, this is a non-disruptive activity and does not require that you reboot your machine. You have to complete the following steps to activate the keys:

￿Order two of feature 7203 (10 TB each of 2244–PTC) for example. You can order a different combination of the features to get to your required amount.

￿You will receive a 2244 function authorization serial number from an IBM representative.

￿Retrieve the license key from the DSFA Web site.

￿This new license key represents the total capacity that you now have licensed (or 45 TB). It licenses the original 25 TB plus the additional 20 TB, just ordered.

￿Enter the license key into the DS Storage Manager. This will replace the existing license key with the new license key.

￿After successful installation of the license key, you now have 45 TB of 2244–PTC capacity.

9.4Capacity planning

The DS8000 offers high scalability while maintaining excellent performance. We have already explained the scalability in 6.3, “Designed for scalability” on page 109. You know that the physical storage capacity is not equal to the logical storage capacity that you can use for your system. We explain how to estimate the logical capacity for the DS8000 in this section.

9.4.1 Logical configurations

The total capacity of physical disk drives in the DS8000 is not equal to the logical capacity you can use because you configure RAID protection to protect your important data. The

174DS8000 Series: Concepts and Architecture