Configuring an Array

When you choose Create a RAID set from the Main Menu of the RAID utility, you will be presented with the following menu:

For each option/RAID level are as follows:

RAID0: Also called “disk striping,” where multiple physical drives are merged to create a single logical volume.

Minimum number of drives: 2

Maximum number of drives: 4

Fault tolerance: None

Performance: Excellent; improves both read and write performance

Other considerations: None

RAID1: Also called “drive mirroring,” where a drive has an exact duplicate copy of data maintained on another disk.

Minimum number of drives: 2 (per array)

Maximum number of drives: 2 (per array)

Fault tolerance: Excellent; complete redundancy

Performance: Good; some reduction in write performance

Other considerations: 50% reduction in usable space as the drive containing the mirror is not available to the user; drives must be identical

RAID10: Also called RAID 0+1, this is a combination of disk striping (RAID 0) and mirroring (RAID 1). Two disks are striped together in a single volume, with a mirrored striped set for redundancy.

Minimum number of drives: 4

Maximum number of drives: 4

Fault tolerance: Excellent; complete redundancy

Performance: Good; some reduction in write performance

Other considerations: 50% reduction in usable space as the drives containing the mirror is not available to the user; drives must be identical

SPARE DRIVE: This is used in conjunction with RAID 1 (mirroring) and allows the computer to keep running in the event of a drive failure without user intervention, even if it is the boot drive that has failed. Also referred to as RAID 1+S.

Minimum number of drives: 1 (requires an associated RAID 1 array)

Maximum number of drives: 1 (requires an associated RAID 1 array)

Fault tolerance: Adds seamless disaster recovery to a RAID 1 configuration

Performance: Not applicable

Other considerations: Drive is not available to the user; drive must be identical to the models used in the associated RAID 1 array

Instruction Manual

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StarTech.com PCISATA4R1 Configuring an Array, Other considerations None, Minimum number of drives Maximum number of drives

PCISATA4R1 specifications

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