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Raid 1 suppports the Mirroring if any one hard disk faild one will get the copy of the data and fault tolerent. after replacing the hard disk you have to re create the mirroring. Raid 5 supports stripped with parity the data will be deviced into blocks and stored in all the drives with the parity information. if any one or two hard disks faild the data will be available.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoRAID 1 = Disk Mirroring. Two redundant disks with identical information acting as one disk.
RAID 5 = Disk striping with parity. Data is spread across 3 or more disks with parity information for error correction and recovery.
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What are Levels of RAID 0 1 5 and Which one is better and why?
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.
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 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 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 are the techniques used br RAID for enhancing reliability?
I think its called mirroring (it clones the data on 2 drives for raid 1) so you have 2 redundant copies of your data , thus increasing the odds for data recovery if 1 hdd goes that is for raid 1
Which is faster raid 1 or raid 5?
raid 5
What level of RAID will result in two sets of disks that contain the same information?
RAID 1, RAID 1 + 0, and RAID 5, 6.
The drive conigurations supported by windows xp professional provides fault tolerance?
RAID 1, RAID 0+1, RAID 5 and 6.
What are the ratings and certificates for Vikings - 2013 Raid 1-5?
Vikings - 2013 Raid 1-5 is rated/received certificates of: Netherlands:16 USA:TV-14
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.
What raid level provides fault tolerance?
RAID 1 OR RAID 5 provide added performance as well as fault tolerance --- GAURAV TOMAR
What additional hardware would be necessary to implement each of RAID 1 and RAID 5?
Essentially that just means understanding what raid one and raid 5 are. Raid one stores the data on 2 hard disks, raid 5 stores the data on 3 to 5 disks. In either of these circumstances all the hard disks must be completely identical right down to brand cache, size etc.
What are the release dates for The Rat Patrol - 1966 The Chain of Death Raid 1-5?
The Rat Patrol - 1966 The Chain of Death Raid 1-5 was released on: USA: 10 October 1966
What are the release dates for Dark Age - 2013 The Raid Part 2 1-5?
Dark Age - 2013 The Raid Part 2 1-5 was released on: USA: 30 March 2013
What raid uses least number of hard disk?
There are three types of RAID RAID 0 (Stripping without parity) The records are distributed among all the available HDDs. The number of the HDDs may vary from one system to the other RAID 1 (Mirroring) This uses double number of HDDs. One stores the records while an equal number of HDDs forms the backup. RAID 5 (Stripping with parity) This type of raid distributes the records in n-1 disks while maintaining 1 disk as the parity disk. assuming 4 HDDs are required RAID 0 uses all the four RAID 1 uses double RAID 5 uses 4 + 1
What are the ratings and certificates for The Rat Patrol - 1966 The Chain of Death Raid 1-5?
The Rat Patrol - 1966 The Chain of Death Raid 1-5 is rated/received certificates of: Canada:PG (video rating)
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
