IBM DS8000 manual Addressing capabilities with storage facility images

Storage Facility Image 1

Capacity:	20 TB Fixed Block (FB)
LIC level:	A
License function:	Point-in-time Copy
License feature:	FlashCopy

System 1	System 2
Open System	zSeries
LUN0
LUN1	3390-3
LUN2	3390-3
DS8300 Model 9A2
(Physical Capacity: 30TB)

Storage Facility Image 2

Capacity:	10	TB Count Key Data (CKD)
LIC level:	B
License function:	no Copy function
License feature:	no Copy feature

Figure 3-8 Example of storage facility images in the DS8300

This example shows a DS8300 with a total physical capacity of 30 TB. In this case, a minimum Operating Environment License (OEL) is required to cover the 30 TB capacity. The DS8300 is split into two storage facility images. Storage facility image 1 is used for an Open System environment and utilizes 20 TB of fixed block data. Storage facility image 2 is used for a zSeries environment and uses 10 TB of count key data.

To utilize FlashCopy on the entire capacity would require a 30 TB FlashCopy license. However, as in this example, it is possible to have a FlashCopy license for storage facility image 1 for 20 TB only. In this example for the zSeries environment, no copy function is needed, so there is no need to purchase a Copy Services license for storage facility image 2. You can find more information about the licensed functions in 9.3, “DS8000 licensed functions” on page 167.

This example also shows the possibility of running two different licensed internal code (LIC) levels in the storage facility images.

Addressing capabilities with storage facility images

Figure 3-9 on page 59 highlights the enormous enhancements of the addressing capabilities that you get with the DS8300 in LPAR mode in comparison to the previous ESS Model 800.

58DS8000 Series: Concepts and Architecture