Table 3-2. RAID Level Migration (continued)

Source

Target

Required

Number of

Capacity

Description

RAID

RAID

Number of

Physical

Expansion

 

Level

Level

Physical

Disks

Possible

 

 

 

Disks

(End)

 

 

 

 

(Beginning)

 

 

 

 

 

 

 

 

 

RAID 1

RAID 5

2

3 or more

Yes

Removes redundancy while

 

 

 

 

 

doubling capacity.

 

 

 

 

 

 

RAID 1

RAID 6

2

4 or more

Yes

Two drives are required to be

 

 

 

 

 

added for distributed parity

 

 

 

 

 

data.

 

 

 

 

 

 

RAID 5

RAID 0

3 or more

2 or more

Yes

Converting to a non-redundant

 

 

 

 

 

virtual disk and reclaiming disk

 

 

 

 

 

space used for distributed

 

 

 

 

 

parity data.

 

 

 

 

 

 

RAID 5

RAID 6

3 or more

4 or more

Yes

At least one drive needs to be

 

 

 

 

 

added for dual distributed

 

 

 

 

 

parity data.

 

 

 

 

 

 

RAID 6

RAID 0

4 or more

2 or more

Yes

Converting to a non-redundant

 

 

 

 

 

 

 

 

 

 

virtual disk and reclaiming disk

 

 

 

 

 

space used for distributed

 

 

 

 

 

parity data.

 

 

 

 

 

 

RAID 6

RAID 5

4 or more

3 or more

Yes

Removing one set of parity

 

 

 

 

 

data and reclaiming disk space

 

 

 

 

 

used for it.

 

 

 

 

 

 

NOTE: The total number of physical disks in a disk group cannot exceed 32.

NOTE: You cannot perform RAID level migration and expansion on RAID levels 10, 50, and 60.

About PERC 6 and CERC 6i Controllers

35

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Dell UCP-60, UCP-61, UCC-60 manual Or more Yes Removes redundancy while Doubling capacity

UCP-61, UCP-60, UCC-60 specifications

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