HP Xw9300 NVIDIA: RAID Users Guide - Page 76

Morphing From One RAID Array to Another, General Morphing Principles

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CHAPTER 3 Using the NVRAIDMAN Utility Morphing From One RAID Array to Another In a traditional RAID environment, when a user wants to change the current state of a disk or a current array to a new RAID configuration, the process of reconfiguring the new array involves multiple steps. The user must back up the data, delete the array, re-boot the PC, and then reconfigure the new array. NVIDIA RAID allows the end user to change the current state of the disk or array to another with a one-step process called ʺMorphingʺ. This section describes the NVIDIA Morphing process and explains how to use Morphing to convert from one RAID array type to another. General Morphing Principles NVIDIA RAID includes extensive support for morphing, a process of converting from one RAID mode to another RAID mode. General Requirements and Limitations • The new array capacity must be equal to or greater than the previous array. For example, it is possible to morph from a RAID 1 array to a RAID 0 array as long as the RAID 0 array is the same size as (or larger than) the RAID 1 array. • You can't morph • To or from a JBOD (Spanning) array • From RAID 1 to RAID 1 • From RAID 0+1 to RAID 1 72 NVIDIA RAID User's Guide - Version 2.0 A

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72
NVIDIA RAID User’s Guide
– Version 2.0 A
C
HAPTER
3
Using the NVRAIDMAN Utility
Morphing From One RAID Array to Another
In a traditional RAID environment, when a user wants to change the current state of a
disk or a current array to a new RAID configuration, the process of reconfiguring the new
array involves multiple steps. The user must back up the data, delete the array, re-boot the
PC, and then reconfigure the new array.
NVIDIA RAID allows the end user to change the current state of the disk or array to
another with a one-step process called
ʺ
Morphing
ʺ
. This section describes the NVIDIA
Morphing process and explains how to use Morphing to convert from one RAID array
type to another.
General Morphing Principles
NVIDIA RAID includes extensive support for morphing, a process of converting from one
RAID mode to another RAID mode.
General Requirements and Limitations
•
The new array capacity must be equal to or greater than the previous array.
For example, it is possible to morph from a RAID 1 array to a RAID 0 array as long as
the RAID 0 array is the same size as (or larger than) the RAID 1 array.
•
You can’t morph
•
To or from a JBOD (Spanning) array
•
From RAID 1 to RAID 1
•
From RAID 0+1 to RAID 1