Definition: A RAID controller is a hardware device responsible for
managing physical drives in a system and presenting them to the computer as
logical units.
The setting up of
RAID 0 and
RAID 1 can be done either via software or hardware.
Some operating systems allow you to setup RAID in the software itself. A better option
is to have a dedicated piece of hardware controlling the RAID functions. A guide to
software RAID in Linux.
RAID controller chips are often imbedded in the motherboard. They also come in the form of a PCI expansion cards.
Hardware RAID You need to ensure that the RAID controller card is designed for the type of hard disks you are using. A RAID controller card designed for use with IDE hard disks will not take SCSI hard disks. A controller designed to provide just RAID 0 functions will not allow you to set up a fault tolerant array.
RAID controller chips are often imbedded in the motherboard. They also come in the form of a PCI expansion cards.
Hardware RAID You need to ensure that the RAID controller card is designed for the type of hard disks you are using. A RAID controller card designed for use with IDE hard disks will not take SCSI hard disks. A controller designed to provide just RAID 0 functions will not allow you to set up a fault tolerant array.
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