Sans Digital Towerraid TR4UTP User Manual download pdf (Page 69)

4.2.7 RAID Groups Options

Before RAID Groups are created, the following options can be modified:

FIELD DEFINITION

RAID Group

Label

Enter an identifiable name for the RAID group. This value can be any string (up to 8 characters

including blank spaces) to help users identify this volume.

RAID Group

Select a Group ID from the available ID list. The maximum number of RAID Groups per controller

is 8. Group ID can be any number between 0 and 7.

Configuration

Select which RAID level is to be used to configure these members:

• Contiguous (for virtual disk, JBOD Mode).

• Concatenated (for multiple concatenated segments, Spanning Mode)

• Striped (for RAID 0)

• Mirrored (for RAID 1)

• Mirrored Striped (for RAID 10)

• Parity RAID (for RAID 5)

Capacity

Select a value to define the total usable capacity of the RAID Group or manually enter the volume

size in gigabytes (GB). Selecting MAX will create the largest RAID set possible with the drive(s)

selected.

Chunk Size

Select a value to define the chunk size (stripe size) for performance tuning. In general, large stripe

sizes are best for large files that are accessed sequentially (for example, media streaming files) and

smaller sizes are better for randomly accessed data like databases. This parameter is not used for

Contiguous, Concatenated, and Mirrored configurations.

Rebuild Priority

Select a value to identify how quickly the controller should rebuild data on a disk after a hardware

failure. A value of 1 is the lowest priority and will take the longest to rebuild. A value of 10 is the

highest priority and will rebuild the fastest. Higher priority will require more CPU resources, which

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Sans Digital Towerraid TR4UTP User Manual Page 69