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Raid configurations of the disks are used to provide

1. Fault-tolerance

2. High speed

3. High data density

4. (A) & (B)

edited | 3.5k views
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It will be D only but if we have to select best one then option A fault tolerance would be best...

1. Fault tolerance and
2. High Speed
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+10
Yes. For sure. a and b should be answers though a would be a slightly better one if we have to choose 1.
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is RAID in syllabus??
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@arjun sir : parallel / accessing  mean --would give data at high speed ? That why you opted for high speed too ?
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yes, exactly.
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is RAID in syllabus , Now ?
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Not all RAID levels provide redundancy of data, so high speed cannot be said with confidence. Primary purpose of RAID is to provide fault tolerance.
RAID 0=IMPROVES DATA TRANSFER RATE.BUT CANT PROVIDE FAULT TOLERENCE

RAID 1 TO 5= PROVIDE TOLERANCE  TO ONE DISC FAILURE

RAID 6=TWO DISC FAILURE

RAID stands for Redundant Array of Inexpensive (or sometimes "Independent") Disks. In general, a RAID-enabled system uses two or more hard disks to improve the performance or provide some level of fault tolerance for a machine—typically a NAS or server.

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because...if one raid fails then we can use another available raid....
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RAID 0=IMPROVES DATA TRANSFER RATE.BUT CANT PROVIDE FAULT TOLERANCE

from here we can say it gives High Speed too. Isn't it?

+1 vote

RAID, short for redundant array of independent (originally inexpensive) disks is a disk subsystem that stores your data across multiple disks to either increase the performance or provide fault tolerance to your system (some levels provide both).

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