IBM DS8000 manual Storage system LPARs Logical partitions

The hardware-based LPAR implementation ensures data integrity. The fact that you can create dual, independent, completely segregated virtual storage systems helps you to optimize the utilization of your investment, and helps to segregate workloads and protect them from one another.

The following are examples of possible scenarios where storage facility images would be useful:

￿Two production workloads

The production environments can be split, for example, by operating system, application, or organizational boundaries. For example, some customers maintain separate physical ESS 800s with z/OS hosts on one and open hosts on the other. A DS8300 could maintain this isolation within a single physical storage system.

￿Production and development partitions

It is possible to separate the production environment from a development partition. On one partition you can develop and test new applications, completely segregated from a mission-critical production workload running in another storage facility image.

￿Dedicated partition resources

As a service provider you could provide dedicated resources to each customer, thereby satisfying security and service level agreements, while having the environment all contained on one physical DS8300.

￿Production and data mining

For database purposes you can imagine a scenario where your production database is running in the first storage facility image and a copy of the production database is running in the second storage facility image. You can perform analysis and data mining on it without interfering with the production database.

￿Business continuance (secondary) within the same physical array

You can use the two partitions to test Copy Services solutions or you can use them for multiple copy scenarios in a production environment.

￿Information Lifecycle Management (ILM) partition with fewer resources, slower DDMs

One storage facility image can utilize, for example, only fast disk drive modules to ensure high performance for the production environment, and the other storage facility image can use fewer and slower DDMs to ensure Information Lifecycle Management at a lower cost.

Figure 3-8 on page 58 depicts one example for storage facility images in the DS8300.

Chapter 3. Storage system LPARs (Logical partitions) 57