Promise Technology M300p, M500i, M500f, M500p, M300i, M300f, M200i, M200p, M200f manual RAID RAID 1/1E

Chapter 7: Technology Background

From	To	Increase			Redundancy
		Capacity	Performance		Add	Lose
RAID 5	RAID 50				•*
	RAID 10			•
	RAID 0	•		•		•
RAID 1/1E	RAID 50	•		•
	RAID 10	•		•
	RAID 5	•		•
	RAID 0	•		•		•
RAID 0	RAID 50	•		•	•
	RAID 10	•		•	•
	RAID 5	•		•	•
	RAID 1/1E				•

* Increases the existing redundancy

Important

•The Target disk array may require more disk drives than the Source disk array

•If the Target disk array requires an EVEN number of disk drives but the Source disk array has an ODD number, ADD a disk drive as part of the migration process

•You cannot reduce the number of disk drives in your disk array, even if the Target disk array requires fewer disk drives than the Source disk array

•RAID 1 (mirroring) works with two drives only. Only a single- drive RAID 0 disk array or a single-drive JBOD can migrate to RAID 1. Other RAID Levels use too many drives to migrate

•You cannot migrate a disk array when it is Critical or performing activities such as Synchronizing, Rebuilding, and

PDM

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