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Disk duplexing is where you're writing data to 2 or more disks, with each disk using its own controller. If one disk fails, the other disk continues to operate with no data loss. Even if you lose the disk controller, it is not a problem since you're using a separate controller for the other disk. It is considered an variation of RAID 1 disk mirroring.
Disk striping does not duplicate data as in disk duplexing. It writes (stripes) data across 3 or more disks but uses parity checking for each disk. If one disk fails, the other drives can recreate the data stored on the failed one. It is considered RAID 5 level.
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Which method of fault tolerance is the least expensive per MB of storage disk duplexing or disk striping with parity?
Disk duplexing requires writing the same data twice and requires an extra controller.Disk striping with parity only writes once and requires only one controller. Although the parity information in disk striping with parity does take up some space, it does not take up as much space as the duplicate data in disk duplexing.therefore,disk duplexing is more expensive.
Which method of fault tolerance is least expensive per MB of storage disk duplexing or disk striping with parity?
has to be raid 5. raid5 with the parity will consume about 1/3 of the disk space but will give just about the highest level of fault tolerance. raid0 - disk striping - will give you the full disk space but no fault tolerance raid1 - disk splitting/ duplexing - will give you full redundancy but will cost 50% of your disk space raid5 - parity - will do block-level striping with parity data , disk space cost about 30%, redundant
What is the difference between raid4 and raid5?
Both the RAID levels perform block level striping. How ever the difference is in parity bottleneck. Hence raid5 preferred over raid4.
Which raid level uses striping with parity?
RAID 5
What raid level is disk striping with parity?
Raid 5
What is a difference between odd parity and even parity?
in even parity number of 1s is even called even parityand or number of 1s is odd called odd parity anil kuntal anil kuntal you suck
What is raid 7 Difference between raid 6 and raid 7?
RAID 7 is triple parity RAID 6 is double parity.
What is 'point odf parity' and 'point of difference' in positioning for Apple iPod when it was launched?
point of parity is the point of parity point of difference is the point of difference good luck
What is a fault tolerance measure known as disk striping with parity?
RAID-5 provides data redundancy by using parity. Parity is a calculated value used to reconstruct data after a failure. While data is being written to a RAID-5 volume, parity is calculated by doing an exclusive OR (XOR) procedure on the data. The resulting parity is then written to the volume.
What is the difference between ECC and parity memory?
ecc momory can detect and repair errors
Which RAID level will you implement to provide redundancy?
Type your answer here...Answer Explanation: RAID 1 uses a minimum of two hard disks to mirror data for fault tolerance. Each hard disk contains a complete copy of the data. Disk duplexing improves mirroring because each disk is on a separate controller. If one disk or controller fails in a duplexing RAID 1 array, the other disk can take over immediately to provide fault tolerance.RAID 5, also known as disk stripping with parity, provides fault tolerance by striping the data across a minimum of three and a maximum of 32 disks, and by storing parity information on each disk. This allows the RAID array to recover from a single disk failure.RAID 0, also known as disk striping, is used to increase performance by striping data over a minimum of two and a maximum of 32 disks. RAID 0 provides no fault tolerance.RAID 3, also known as disk stripping with a parity disk, provides fault tolerance by writing data across three or more drives. Because the least number of hard disks is required, RAID 1 will be used instead of RAID 3.
The most common form of RAID used on modern networks relies on what techniques?
C: disk striping with distributed parity AKA RAID 5
