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56 DS8000 Series: Concepts and Architecture
Figure 3-7 DS8300 storage facility images and Copy Services
FlashCopy
The DS8000 series fully supports the FlashCopy V2 capabilities that the ESS Model 800
currently provides. One function of FlashCopy V2 was the ability to have the source and
target of a FlashCopy relationship reside anywhere within the ESS (commonly referred to as
cross LSS support). On a DS8300 Model 9A2, the source and target must reside within the
same storage facility image.
A source volume of a FlashCopy located in one storage facility image cannot have a target
volume in the second storage facility image, as illustrated in Figure 3-7.
Remote mirroring
A Remote Mirror and Copy relationship is supported across storage facility images. The
primary server could be located in one storage facility image and the secondary in another
storage facility image within the same DS8300.
For more information about Copy Services refer to Chapter 7, “Copy Services” on page 115.
3.5 LPAR benefits
The exploitation of the LPAR technology in the DS8300 Model 9A2 offers many potential
benefits. You get a reduction in floor space, power requirements, and cooling requirements
through consolidation of multiple stand-alone storage functions.
It helps you to simplify your IT infrastructure through a reduced system management effort.
You also can reduce your storage infrastructure complexity and your physical asset
management.
DS8300 Storage Facility Images and Copy Services
Storage Facility Image 1
PPRC
Primary
PPRC
Primary
PPRC
Secondary
PPRC
Secondary
FlashCopy
Source
FlashCopy
Source
FlashCopy
Target
FlashCopy
Target
üRemote Mirroring and Copy (PPRC) within a Storage Facility Image or across Storage Facility Images
üFlashCopy within a Storage Facility Image
Storage Facility Image 2
ü
ü
û
Storage Facility Image 1
PPRC
Primary
PPRC
Primary
PPRC
Secondary
PPRC
Secondary
FlashCopy
Source
FlashCopy
Source
FlashCopy
Target
FlashCopy
Target
üRemote Mirroring and Copy (PPRC) within a Storage Facility Image or across Storage Facility Images
üFlashCopy within a Storage Facility Image
Storage Facility Image 2
ü
ü
û