IBM DS8000 manual Model conversion, DS8300 example configuration

￿An additional 256 DDMs

–Up to 128 DDMs per storage facility image

The second Model 9AE (expansion frame) has:

￿An additional 256 DDMs

–Up to 128 drives per storage facility image

A fully configured DS8300 with storage facility images has one base frame and two expansion frames. The first expansion frame (9AE) has additional I/O drawers and disk drive modules (DDMs), while the second expansion frame contains additional DDMs.

Figure 3-5provides an example of how a fully populated DS8300 might be configured. The disk enclosures are assigned to storage facility image 1 (yellow, or lighter if not viewed in color) or storage facility image 2 (green, or darker). When ordering additional disk capacity, it can be allocated to either storage facility image 1 or storage facility image 2. The cabling is pre-determined and in this example there is an empty pair of disk enclosures assigned for the next increment of disk to be added to storage facility image 2.

	Storage				Storage			Storage
enclosure					enclosure			enclosure
	Storage				Storage			Storage
enclosure					enclosure			enclosure
	Storage				Storage			Storage
enclosure					enclosure			enclosure
	Storage				Storage			Storage
enclosure					enclosure			enclosure
					Storage			Empty storage
					enclosure			enclosure
Storage				Storage
		Processor			Storage			Empty storage
Facility				Facility
		complex 0			enclosure			enclosure
Image 1				Image 2
Storage				Storage	Storage			Storage
		Processor			enclosure			enclosure
Facility				Facility
Image 1		complex 1		Image 2
					Storage			Storage
					enclosure			enclosure
I/O drawer			I/O drawer		I/O drawer	I/O drawer
0				1	4		5
I/O drawer			I/O drawer		I/O drawer	I/O drawer
2				3	6		7

Figure 3-5 DS8300 example configuration

Model conversion

The Model 9A2 has a fixed 50/50 split into two storage facility images. However, there are various model conversions available. For example, it is possible to switch from Model 9A2 to a full system machine, which is the Model 922. Table 3-1shows all possible model conversions regarding the LPAR functionality.

Chapter 3. Storage system LPARs (Logical partitions) 53