RAID 1 OR RAID 5 provide added performance as well as fault tolerance --- GAURAV TOMAR
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RAID level 0RAID 0RAID 0 (block-level striping without parity or mirroring) has no (or zero) redundancy. It provides improved performance and additional storage but no fault tolerance. Any drive failure destroys the array, and the likelihood of failure increases with more drives in the array.
RAID 0 does not provide any 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
RAID 1, RAID 0+1, RAID 5 and 6.
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.
A: raid 0raid 0 is no fault tolerance...coz it writes the data parallely and it doesnot contain any mirror in that.
raid card
RAID storage can be used to provide fault-tolerance to a system. With RAID, data is stored redundantly on a set of disks to mitigate against failure of a disk.
RAID 6 provides the most fault tolerance of any standard RAID disk arrays (RAID 0, 1 , 5, 6, and RAID 10). If any two disks in a RAID 6 array fail and are removed, then two new blank disks can be installed and no data has been lost. RAID 1+1 or most other "layered" RAID systems can provide more fault tolerance than RAID 6, tolerating the failure of any 3 disks. Some experimental non-standard disk arrays can provide more fault tolerance with less overhead, such as the parchive system. Nearly all distributed file systems and distributed version control systems can be set up so that if one machine is completely destroyed by fire, all the data can be recovered from a backup machine in another building.
RAID 0 does not provide fault tolerance, it's to use space form two or more physical disks and increases the disk space available for a single volume. (pg 406)
RAID 0 is "Stripping" and RAID1 is "Mirroring". RAID0 doesn't provide fault tolerance but RAID1 does provide fault tolerance because it has a every disk has a mirrored disk so that in case of disk failure the other disk can be used.