| Type |
Description |
Advantages |
| Software-ba sed RAID |
Included in NOSs such as NetWare and Windows NT. All RAID functions are handled by the host CPU which can severly tax its ability to perform other conputations. |
* Low price
* Only requires a SCSI card |
| Hardware-b ased RAID |
Processor-intensive RAID operations are offloaded from the host CPU to enhance performance |
* Data protection and performance
* Mor robust fault- tolerance features and increased performance versus software-based RAID |
| External Hardware RAID Card |
Connects to the server via a standard SCSI card. RAID functions are performed on a microprocessor located in the external RAID storage subsystem |
* OS independent
* Will work with any OS
* Build super high-capacity storage systems for high-end servers |