Storage Facility Image 1

Processor complex 0

 

Processors2 Processors

 

 

 

 

 

RIO-G interface

 

 

 

 

RIO-G interface

 

Memory

 

SCSI controller

 

A

 

A'

 

CD/DVD

boot data data

boot

data data

Ethernet-Port

 

C

 

C'

 

 

 

Ethernet-Port

 

boot data data

boot

data data

 

 

 

Memory

 

 

 

 

 

 

SCSI controller

 

2 Processors

 

RIO-G interface

 

 

 

 

 

 

 

RIO-G interface

Storage Facility Image 2

HA HA DA HA HADA

I/O drawer

0

HAHADA HA HADA

I/O drawer

1

S-HMC

HAHADA HA HA DA

I/O drawer

3

HA HA DA HA HA DA

I/O drawer

2

Processor complex 1

 

Processors2 Processors

 

RIO-G interface

 

 

 

RIO-G interface

 

 

 

SCSI controller

Memory

 

 

B

B'

 

Ethernet-Port

boot data data

boot data data

CD/DVD

 

 

D

D'

Ethernet-Port

 

boot data data

boot data data

 

 

 

 

Memory

 

SCSI controller

 

 

 

RIO-G interface

2 Processors

 

 

 

RIO-G interface

 

 

 

Figure 3-4 Storage facility image resource allocation in the processor complexes of the DS8300

I/O resources

For one storage facility image, the following hardware resources are required:

￿2 SCSI controllers with 2 disk drives each

￿2 Ethernet ports (to communicate with the S-HMC)

￿1 Thin Device Media Bay (for example, CD or DVD; can be shared between the LPARs)

Each storage facility image will have two physical disk drives in each processor complex. Each disk drive will contain three logical volumes, the boot volume and two logical volumes for the memory save dump function. These three logical volumes are then mirrored across the two physical disk drives for each LPAR. In Figure 3-4,for example, the disks A/A' are mirrors. For the DS8300 Model 9A2, there will be four drives total in one physical processor complex.

Processor and memory allocations

In the DS8300 Model 9A2 each processor complex has four processors and up to 128 GB memory. Initially there is also a 50/50 split for processor and memory allocation.

Therefore, every LPAR has two processors and so every storage facility image has four processors.

The memory limit depends on the total amount of available memory in the whole system. Currently there are the following memory allocations per storage facility available:

￿32 GB (16 GB per processor complex, 16 GB per storage facility image)

￿64 GB (32 GB per processor complex, 32 GB per storage facility image)

￿128 GB (64 GB per processor complex, 64 GB per storage facility image)

￿256 GB (128 GB per processor complex, 128 GB per storage facility image)

Chapter 3. Storage system LPARs (Logical partitions) 51

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IBM DS8000 manual Storage Facility Image Processor complex, Processor and memory allocations