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A-17
nVIDIA SATA RAID
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 .Morphing.. This section describes the NVIDIA
Morphing process and explains how to use Morphing to convert from one RAID array
type to another.
General M orphing 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 from RAID 1 to RAID 1
Specific M orphing Requirements
The following table lists the disk requirements for a new RAID array for various
morphing combinations.
From To New Array Disk Requirements
RAID 0
m > n
Number of disks in the new array must be greater than the
original array.
RAID 0
RAID 1
m =2, n =1
RAID 1 array must include two disks, converted from a one
disk RAID 0 array.
RAID 0
No additional restrictions.
RAID 1
RAID 1 ** Not a valid combination **
9184v1.0-Appendix A(nVIDIA SATA RAID).p65 2007/4/19, 下午 04:57 17