| RAID Level
: 1 |
| Name |
Mirrored
Disks |
| Description |
Provides
redundancy by writing identical data
to each member disk of the array. |
| Minimum Drives
Required |
2 |
| Available Disk Number |
1 |
| Data Availability |
Very
High |
|
| RAID Level
: 3 |
| Name |
Striping
with dedicated parity disk |
| Description |
Provides
redundancy by writing parity to a dedicated
Disk |
| Minimum Drives
Required |
3 |
| Available Disk Number |
N-1 |
| Data Availability |
High |
|
| RAID Level
: 5 |
| Name |
Independent
Drives with Spraed Parity |
| Description |
Provides
redundancy by distributing parity across
some or all of an array's member disks |
| Minimum Drives
Required |
3 |
| Available Disk Number |
N-1 |
| Data Availability |
High |
|
| RAID Level
:0+1 |
| Name |
Data
Striping with Mirrored |
| Description |
This
RAID Level is combination of RAID 0
(striping) &
RAID 1 (mirrored) |
| Minimum Drives
Required |
4 |
| Available Disk Number |
N/2 |
| Data Availability |
Very
High |
|
| RAID Level
:30 |
| Name |
Data
Striping with RAID 3 |
| Description |
This
RAID Level is combination of RAID 0
(striping into 2
groups) &
RAID 3 (provides
redundancy by writing parity to a dedicated Disk)
|
| Minimum Drives
Required |
6 |
| Available Disk Number |
N-2 |
| Data Availability |
Very
High |
|
| RAID Level
:50 |
| Name |
Data
Striping with RAID 5 |
| Description |
This
RAID Level is combination of RAID 0
(striping into 2
groups) &
RAID 5 (provides
redundancy by distributing parity across
some or all of an array's member disks) |
| Minimum Drives
Required |
6 |
| Available Disk Number |
N-2 |
| Data Availability |
Very
High |
|
| RAID Level
:6 |
| Name |
Two Independent Drives with Spread Parity |
| Description |
RAID 6 is essentially an extension of RAID level 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (dual parity)
|
| Minimum Drives
Required |
3 |
| Available Disk Number |
N-2 |
| Data Availability |
Very
High |
|
|
