Question

Which of the following is correct w.r.t RAID systems? 1. RAID 5 is particularly used for...

Which of the following is correct w.r.t RAID systems?

1.

RAID 5 is particularly used for high availability systems
2.

RAID 1 requires twice the number of disks
3.

RAID 10 is a combination of Level 0 and Level 5
4.

RAID 6 is mostly used for transaction processing applications
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Answer #1

2. RAID 1 requires twice the number of disks is correct. This is because RAID 1 works on the concept of data mirroring. It stores identical data on two drives.

Explanation for others:

1. RAID 5 is not used for high availability but for transaction processing applications and also for general storage.

3. RAID 10 is a combination of Level 1 and Level 0 not of 0 and 5.

4. RAID 6 is not used for transaction applications but to provide high availability because even after losing two disks, it can remain functional.

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