IBM DS8000 manual Lpar benefits, FlashCopy, Remote mirroring

DS8300 Storage Facility Images and Copy Services

			￿
	Storage Facility Image 1			Storage Facility Image 2
￿	PPRC	PPRC		PPRC
	Primary	Primary		Secondary
	PPRC			FlashCopy	FlashCopy
				Source	Target
	Secondary
		FlashCopy	￿	FlashCopy
		Source		Target

￿Remote Mirroring and Copy (PPRC) within a Storage Facility Image or across Storage Facility Images ￿FlashCopy within a Storage Facility Image

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.

56DS8000 Series: Concepts and Architecture