It's a new driver oriented on cards of fusion generation only. It's too different from this one, even in place of firmware transition. If you're testing under Linux, you should check how your card operates with 'megaraidsas' driver instead. Install LSI MegaRAID Virtual Device driver for Windows 10 x64, or download DriverPack Solution software for automatic driver installation and update.
A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units. It almost always implements hardwareRAID, thus it is sometimes referred to as RAID controller. It also often provides additional disk cache.
A disk array controller name is often improperly shortened to a disk controller. The two should not be confused as they provide very different functionality.
Front-end and back-end side[edit]
A disk array controller provides front-end interfaces and back-end interfaces.
Back-end interface communicates with controlled disks. Hence protocol is usually ATA (a.k.a. PATA), SATA, SCSI, FC or SAS.
Front-end interface communicates with a computer's host adapter (HBA, Host Bus Adapter) and uses:
one of ATA, SATA, SCSI, FC; these are popular protocols used by disks, so by using one of them a controller may transparently emulate a disk for a computer
somewhat less popular protocol dedicated for a specific solution: FICON/ESCON, iSCSI, HyperSCSI, ATA over Ethernet or InfiniBand
A single controller may use different protocols for back-end and for front-end communication. Many enterprise controllers use FC on front-end and SATA on back-end.
Enterprise controllers[edit]
In a modern enterprise architecture disk array controllers (sometimes also called storage processors, or SPs[1]) are parts of physically independent enclosures, such as disk arrays placed in a storage area network (SAN) or network-attached storage (NAS) servers.
Those external disk arrays are usually purchased as an integrated subsystem of RAID controllers, disk drives, power supplies, and management software. It is up to controllers to provide advanced functionality (various vendors name these differently):
Automatic failover to another controller (transparent to computers transmitting data)
Long-running operations performed without downtime
Forming a new RAID set
Reconstructing degraded RAID set (after a disk failure)
Adding a disk to online RAID set
Removing a disk from a RAID set (rare functionality)
Partitioning a RAID set to separate volumes/LUNs
Business continuance volumes (BCV)
Replication with a remote controller....
Simple controllers[edit]
Promise Technology ATA RAID controller
A simple disk array controller may fit inside a computer, either as a PCIexpansion card or just built onto a motherboard. Such a controller usually provides host bus adapter (HBA) functionality itself to save physical space. Hence it is sometimes called a RAID adapter.
As of February 2007Intel started integrating their own Matrix RAID controller in their more upmarket motherboards, giving control over 4 devices and an additional 2 SATA connectors, and totalling 6 SATA connections (3Gbit/s each). For backward compatibility one IDE connector able to connect 2 ATA devices (100 Mbit/s) is also present.
History[edit]
While hardware RAID controllers were available for a long time, they always required expensive SCSI hard drives and aimed at the server and high-end computing market. SCSI technology advantages include allowing up to 15 devices on one bus, independent data transfers, hot-swapping, much higher MTBF.
Around 1997, with the introduction of ATAPI-4 (and thus the Ultra-DMA-Mode 0, which enabled fastHackers of the Lost RAID''. OpenBSD Release Songs. OpenBSD. 2005-11-01. Retrieved 2019-03-23.
^'mfiutil — Utility for managing LSI MegaRAID SAS controllers'. BSD Cross Reference. FreeBSD. Lay summary.
^'mptutil — Utility for managing LSI Fusion-MPT controllers'. BSD Cross Reference. FreeBSD. Lay summary.
^'mpsutil — Utility for managing LSI Fusion-MPT 2/3 controllers'. BSD Cross Reference. FreeBSD. Lay summary.
^ abTheo de Raadt (2005-09-09). 'RAID management support coming in OpenBSD 3.8'. misc@ (Mailing list). OpenBSD.
^Constantine A. Murenin (2010-05-21). '1.1. Motivation; 4. Sensor Drivers; 7.1. NetBSD envsys / sysmon'. OpenBSD Hardware Sensors — Environmental Monitoring and Fan Control (MMath thesis). University of Waterloo: UWSpace. hdl:10012/5234. Document ID: ab71498b6b1a60ff817b29d56997a418.
Storage Basics: Choosing a RAID Controller, May 7, 2004, By Ben Freeman
This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the 'relicensing' terms of the GFDL, version 1.3 or later.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Disk_array_controller&oldid=940158917'
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RAID Controller Cards
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