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RAID 0 is the best for speed because it uses "data stripping". That means if one drive fails, all you have left on the other one is useless bits and pieces of your files. That means one drive failing will corrupt ALL your data. If you choose RAID 0, you MUST back up your data at the very least every day. Preferably every hour. Automatic back ups is a good idea anyway. RAID 1 uses "mirroring". When you save a file, it gets saved to BOTH drives. Putting drives in RAID 1 does not make the system faster. That means if one drive fails, the other one will still contain all your data. The problem with RAID 1 is that you only get HALF of the space you bought. For example, if you put 2 drives with a 3TB capacity in RAID 0, you would have 6TB. 2 drives with 3TB each in RAID 1 would mean instead of 6TB, you would only have 3TB. The reason for that is because both drives contain the EXACT same data. RAID 5 is pretty good for speed and if 1 drive fails, you can just replace it and rebuild the RAID 5 array without losing any data. RAID 5:
RAID 1: RAID 0: I would create a RAID 0 array to store your files and if you care about any of the files you would store on your computer, a RAID 1 or RAID 5 array (I would recommend RAID 5) to back up your data to. I hope this helps.
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What is raid support?
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.
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 a RAID controller and what bennefits would you receive?
RAID stands for "Redundant Array of Inexpensive/Independent Disks". RAID works by combining two or more hard drives. It 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).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.Performance = Drive Speed * Number of DrivesCapacity = Drive Size * Number of DrivesRedundancy allows for no drives to fail.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.Performance = Drive SpeedCapacity = Drive SizeRedundancy allows for all but one drive to fail.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.Performance = Drive Speed * (Number of Drives - 1) (Theoretical)Capacity = Drive Size * (Number of Drives - 1)Redundancy allows for one drive to fail.There are other RAID levels, but they are not as common.The main benefit of using a RAID array is data redundancy and/or performance.Non-commercial (home) users and enthusiasts wanting a very large increase in performance (theoretically multiples of the number of drives used) usually go for RAID 0 since they often are not too worried about drive failure and they enjoy the larger drive capacities that it provides.Small businesses who only need cheap redundancy usually go for RAID 1. If one drive fails, the drive can be replaced and the mirror array restored.Larger businesses or those needing file/database performance go for RAID 5. They can afford the price of an extra drive and a more expensive RAID controller. RAID 5 provides high performance with large capacities while still maintaining data redundancy and is the most desirable in a business or enterprise environment.There are some other options for RAID such as RAID 10 or RAID 01.RAID 10 features two separate RAID 0 arrays which are then mirrored in a RAID 1 array.RAID 01 is the opposite, with two separate RAID 1 arrays which are then striped with a RAID 0 array.There are other non-standard RAID levels, but most are rather uncommon.Alternatively, there is also drive spanning (aka JBOD), but this provides no extra redundancy or performance. Drives are "glued", if you will, end to end.The benefits of each RAID level vary. The type of RAID used depend on the job it must fulfill.
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.
What are the characteristics of raid 0 raid 1 and raid 5?
Raid 0 this is sometimes known as striping. The data is split up into 2 parts and 1 part is sent to the first drive and part 2 is sent to the second drive. This gives a good speed boost. However if one disk fails then you might aswell say all your data is lost, as you only have 1 half off all your files. Gamers tend to like raid 0. Raid 1 this is sometimes known as mirroring. You just have two disks and every time you save a file, it is save to both disks. So really one disk is a mirror off the other. Should one drive fail, you have an exact replica sitting next to it. Raid 5 You need at least 3 disks for this. Imagine your working on a word document and you save it. It is split into 2 parts and the first part is sent to the first disk and the second part is sent to the second disk. Now before it splits the document it does a quick calculation on the it, and based on this it makes a new peice of data called the parity peice. This parity peiece is saved on the third drive. So now if one drive fails, the computer can go the drive that's still working and get the first half of the document and then take parity peice and work out what was on the failed drive.
Which version of raid is supported by windows xp does this raid version provide fault tolerance?
Windows XP supports spanned and striped RAID 0 volumes Hardware RAID is considered a better solution for fault tolerance than software RAID RAID 0 does not provide fault tolerance
Which RAID level stripes data across multiple drives to improve performance?
Every RAID level stripes data across multiple drives, which improves performance compared to using a single disk. RAID 0, RAID 1, RAID 1+0, RAID 5, RAID 6, etc. all have better performance than a single disk. Other than RAID 0, all other RAID levels provide fault tolerance. RAID 1, RAID 1+0, RAID 5, RAID 6, etc. all have fault tolerance.
How can different disks be configured for a RAID in Windows?
The answer depends on whether one is looking to configure RAID via hardware or software. Windows is capable under disk management to run RAID via software. The first step is to convert to a dynamic disk. Then the RAID levels supported, in parentheses are Striped, 2 disks (0) Mirrored, 2 disks (1) Striped with parity, which required 3 disks (5) being the three most popular. That said if RAID is being done at the hardware level, then the operating system is oblivious to the fact that it is being raided at all and simply reads what the RAID controller tells it to. In this scenario all RAID levels are suported. For a deeper discussion on raid levels the following site is excellent. http://www.acnc.com/04_01_00.html
What is raid support?
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.
What is a RAID in technology?
an industrial standard which exist for multiple-disk database schemes, is termed as RAID. The basic strategy used in RAID is to replace the large capacity disk drive with multiple smaller capacity disks. there are several RAID levels. RAID 0 is for striping: Applications requiring high performance for non critical data. RAID 1 is for Mirroring : (Typical applications) System drives; critical files. ther are 6 RAID levels may be its in the form of disks overlaping one upon the another. With this background can any one give detailed, pictorial form of RAID Thank you, Suman (MCA student)
Can you explain why RAID 0 has no tolerence level?
By no tolerance level, i assume you mean for errors. RAID 0 involves writing 1 set of data to 2 hard drives simultaneously where parts of the information is written to each drive. In this way, if just one of the drives fails or has an error, both drives will not work because part of the information is corrupt. In this way, the failure rate is doubled from one hard drive because there are 2 devices that could fail. For better protection, RAID 1 could be used where both hard drives record the same set of data. in this case, if one fails, the other contains the same information and work can continue as if nothing had happened. However, in this config, it will only be the size of the smallest hard drive wheres as in RAID 0, it will be the total combined volume of all the drives. For the best of both worlds, RAID 10 can be used involving 4 drives. 2 of the drives operate in RAID 0 to increase speed then 2 other operate in RAID 1 to those drives mirroring their data in case of failure. There are various other levels of RAID that each have their strengths and weaknesses
Does RAID 0 provide fault tolerance?
RAID 0 does not provide any fault tolerance.
What is RAID fault tolerance?
Fault tolerance is the ability of a system to continue working even when a fault exists. In the case of RAID, which stands for Redundant Array of Inexpensive Discs, fault tolerance is provided by having data recorded on more than one drive, and also by having more than one power supply. Note that RAID 0 is not fault telerant because it is simply stripes the data to increase size and bandwidth, but provides no redundancy. RAID 1 and RAID 5 are fault tolerant, to various levels.
Which RAID version does not provide data redundancy?
RAID 0.
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 raid level should be used if the criteria include the data be written and read simultaneously and that all data duplicated using minimum of three drives?
Raid level 5 supports reading and writing, but writing performance is slower than raid levels 0 and 1.Raid level 5 requires a minimum of 3 drives.
How do you install hardware raid 0 in a computer?
Hardware RAID 0 is basically a controller card that controls the RAID functions such as a SCSI RAID config. Some motherboards come with RAID functionality built in the motherboard. If you have a RAID adapter in your computer and want a RAID 0 configuration with no data protection. You must download software from the RAID adapter manufacture, usually a bootable CD and run the configuration program at boot up using the CD. Keep in mind that this procedure will destroy any data on the drives. Listed below is a list of abbreviated possible configuration types. Raid 0 - No data protection Raid 1 - One drive mirrored to another Raid 5 - Multiple drives combined together with data protection. Make sure you backup your data first...
