Offloads tasks from the host computer, making this setup suitable for RAID 5 and 6. The array is independent from the host system, making it not vulnerable to viruses. RAID is independent from the host computer.Array protects data during, and from the boot process, nullifying any errors. Advantages of hardware Raid-on-Chip Technology: This implementation comes as a chip that is integrated into your motherboard and usually contains the RAID processor, memory controller, host interface, I/O interfaces for your hard disk drive connections, and memory all in one. Raid-on-Chip (RoC) Hardware RAID Technology
Beyond this, you must also purchase the physical card. It comes with a much higher cost than other RAID solutions as the end-user must purchase I/O processors and additional memory drives to expand. Access times are increased as memory is cached.ĭisa dvantages of a discrete physical hardware RAID card: Such as array-level migration, online expansion, and disk hot plugs. Your physical card can be plugged into any system, replaced, or upgraded as needed. Make it very easy to set up your RAID array and maintain it. Comes with a dedicated graphical user interface & software.
Hardware RAID offloads all RAID tasks from the host, giving better host system performance. Hardware RAID arrays are independent from the host system, making it not vulnerable to viruses. Will keep track of in-progress writes, keeping data secure in the event of power loss. When the system crashes, the data integrity stays intact.
This allows you to expand the array by adding on as many hard disk drives as you need to boost capacity. Has multiple I/O interfaces on the physical card.It works by fully offloading all tasks into a redundant storage subsystem so that your host system’s performance is not impacted, even during drive failures.Īdvantages of a discrete physical hardware RAID card: It most commonly plugs into your motherboard’s PCIe or PCI-X slots and all RAID functionality that comes from it is completely separate from your host computer. It also contains its own interfaces for your hard disk drives (I/O controllers). This RAID controller implementation is an expansion type card that has a built-in RAID processor sometimes called an I/O processor. In some cases, a hardware RAID controller will be set up as an independent small computer system dedicated to your RAID application, offloading all tasks from the host computer. With hardware RAID, your controllers can either be card-based as a discrete, physical card or they can be a ROC which stands for “RAID-on-Chip” technology which is integrated hardware that comes with its own motherboard. The role of the hardware RAID controller is to manage your hard drive disks and present them to your host computer as one or more logical units. In this implementation, all hard drive disks are connected to a RAID controller which will physically control and support your RAID configuration. A hardware RAID solution is a dedicated processing system that contains its own processor and memory for running your RAID array.