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RAID stands for "Redundant Array of Inexpensive/Independent Disks". RAID can increase performance and/or data redundancy and/or capacity. There are many different RAID types, the most common being RAID 0 (stripe), RAID 1 (mirror) and RAID 5 (stripe with parity).
RAID works by combining two or more hard disks.
In a RAID 0 (stripe) array, data is split equally between the number of disks in the array. For example, when a 2 MB file is written to a RAID 0 array with two hard drives, the file is split in to two parts and 1 MB of data is written to each hard drive. This increases capacity and performance, but sharply decreases redundancy since only one of the drives needs to fail for all information to be lost.
In a RAID 1 (mirror) array, a complete copy is written to each hard drive in the array. Capacity and performance stay the same, but redundancy is increased. As long as one drive works, you will not lose data.
In a RAID 5 (stripe with parity) array, you need at least three hard drives. Files are split up to all but one of the drives (similar to RAID 0) and a parity bit is written to the last drive. This increases performance, capacity and redundancy. Performance is not as good as RAID 0, but still better than RAID 1. Redundancy is not as good as RAID 1, but is still quite reliable. Capacity is the sum of all but one of the drives.
There are other RAID levels, but they are not as common.
RAID support simply means that whatever device is being described supports RAID. Nearly anything supports RAID. The only computer component that "RAID support" would be relevant to would be a computer motherboard or an IDE or SATA controller.
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What does the term raid server recovery mean?
The term "RAID server recovery" means just that: recovery of the RAID server. A RAID server is a computer that runs RAID software to act as a secondary storage.
What additional hardware will be necessary to implement two identical hard drive?
Hardware will be RAID PCIe / PCIx RAID hardware controller but The hardware RAID is often the motherboard RAID controller or a separate RAID card.
Which type of RAID uses a dedicated parity disk?
RAID 3
Why does raid o not provide fault tolerance?
Different RAID systems have different effects on multiple hard drives. RAID 0 combines storage together. Say you have 2 250GB HDDs combined with RAID 0: that you gives you, essentially, 500GB of storage. The problem with RAID 0 is that if one of the drives were to fail, then the other is to fail too, because of the way RAID 0 works by distributing strands of data over both disks. RAID 0 is sometimes not considered to be a true RAID system because of the lack of fault tolerance. RAID 1 and 5 are more complex to describe, but they generally deal with the same thing: backups. Instead of combining storage, RAID 1 and 5 deal with clones of a particular drive to offer redundancy if one were to fail. Say you have 2 250GB HDDs under RAID 1, essentially giving you 250GB of storage. If one drive were to fail, then the other would serve as a replacement if such were to occur.
What is RAID 10 for computers?
To understand what is raid level 10 you need to know what is Raid 0 and what is Raid 1. Raid 0 is writing of certain data to two hard drive in stripes, thus doubling the speed of writing or loading data. Raid 1 is parallel writing of data to two hard driver. Whatever is written to drive one is written to drive two, thus having automatic backup of data in case of something goes wrong. Now if you combine these two, you get Raid 10. Your data are first written in stripes to hard drive let's call them 1 and 2 and then data from 1 and 2 are copied to hard drive 3 and 4 respectively. All this happen on the fly. This give speed and security of your data if one of primary hard drives fails.
Does Windows 9x support RAID?
no.. only win 2000 and later supports raid..
Does windows 2000 support raid?
Yes, if you have RAID drivers that will work under Windows 2000.
Will raid 5 support different speed hard drive?
For Raid 5 all the hard drives have to be of the same speed.
Which of the two raid1 and raid 5 is better under ntfs?
raid 1 because RAID 1 device maintains a mirror of all the data in a partition on another partition of the disk on the array and NTFS support partitioning of disks
What does air cav really mean?
Air cav means air support, dictionary of air strike, aircraft bombing, air raid and aircraft support!
What are differences between software raids and hardware raids?
Hardware raid is supported by hardware and usually more stable and achieve better performance. Software raid does not need raid hardware support and can be used on machines without raid options. In the same time stability and performance of software raid is not as high as hardware. Software raid is usually recommended for low budget machines (it's a part of many linux-based system, and it's free of charge) if you are not able to afford a good hardware raid.
How do you hook up two disc drives in a raid format?
You hardware has to support RAID technology, read the manual for your motherboard. If you have Linux you can have software RAID which is slower than hardware but still can be used to for mirroring, striping and so on. In the manual should described how to create RIAD (0, 1 and so on). You can have RAID software for windows too, but it's expensive and perfomance is not that great.
What is in raid that is maid in raid?
raid
What is raid 7 Difference between raid 6 and raid 7?
RAID 7 is triple parity RAID 6 is double parity.
Which is faster raid 1 or raid 5?
raid 5
When implementing RAID on a motherboard where do you enable the feature?
RAID is implemented using a RAID controller on the motherboard or on a RAID controller card. RAID is enabled in the BIOS.
Which type of RAID is not supported in Linux?
RAID 2 and RAID 3.
