Intel 7xx Servers, 170 Servers, AS/400 RISC Server manual Large File Save

15.16Save and Restore Scaling using 571E IOAs and U320 15K DASD units to a 3580 Ultrium 3 Tape Drive.

A 570 8 way System i was used for the following tests. A user ASP was created with the number of DASD listed in each test . The workload data was then saved to the tape drive , deleted from the system and restored to the user ASP. These charts are very specific to the new IOAs and U320 capable DASD available. For more information on the IOAs and DASD see Chapter 14 of this guide.

Large File Save

RAID5 SAVE RAID6 SAVE MIRRORING SAVE

	600
	500
GB/HR	400
	300
	200
	100
	0

		D		D	SD					D					D				D			SD
	D			S					S					S				S		D
			DASDDA DA				DASDDA				DASDDASDDASDDA					DASDDASDDA							DASD
	AS																				A
6		12	18	24		0		36		2	8	54	60		66	72	78		4			0
					3				4		4							8				9

Large File Restore

RAID5 RESTORE RAID6 RESTORE MIRRORING RESTORE

	600
	500
GB/HR	400
	300
	200
	100
	0

	D	D				D					D			D				DASDDA				DASDDASDD				DASDDASDDA		D
			DASDDA				D			DA		DA			D
	AS				S				SD		S		S				SD			SD					SD		S
6								A								A								A
		12		18		4			30		36			2			8		54		0		66	2	8	84	90
					2								4				4			6				7	7

IBM i 6.1 Performance Capabilities Reference - January/April 2008
© Copyright IBM Corp. 2008	Chapter 15. Save/Restore Performance	260