Homework Help: Questions and Answers: You have configured Disk 3 and Disk 4 on your Windows 11 workstation as a RAID 1 array with the NTFS file system, and you have assigned F as the drive letter for the array. Each disk has an individual storage capacity of 1 TB. However, when you check the available storage size of F, you notice that it only lists 1 TB (instead of 2 TB) of available disk storage space. What should you do to resolve the issue?
a) Make sure both disks are set to dynamic instead of basic.
b) You need to change to a RAID 5 array.
c) Change the volume to a spanned volume.
d) Nothing. The RAID array is working as designed.
Answer:
First, let’s understand what RAID 1 is:
- RAID 1 is a mirroring technology where data is written identically to two drives.
- It provides redundancy and improves read performance but doesn’t increase storage capacity.
- If you have two 1 TB disks in a RAID 1 array, the total available storage capacity will be 1 TB, not 2 TB. The second disk is an exact mirror of the first, so it doesn’t contribute additional storage space.
Now, let’s look at the given information:
- You have two 1 TB disks (Disk 3 and Disk 4) configured as RAID 1.
- The array is formatted with NTFS and assigned drive letter F.
- The available storage space shows as 1 TB, not 2 TB.
Let’s consider why this is happening:
- In RAID 1, the total usable space is equal to the size of a single disk in the array.
- This is because all data is duplicated across both disks for redundancy.
Given Options: Step by Step Answering
a) Make sure both disks are set to dynamic instead of basic:
- This would be relevant for some configurations, but it doesn’t change the storage capacity of a RAID 1 array.
b) You need to change to a RAID 5 array:
- RAID 5 offers better storage efficiency (data is striped with parity across three or more disks), but changing to RAID 5 would require an additional disk. This option also isn’t necessary to address the specific concern.
c) Change the volume to a spanned volume:
- A spanned volume combines the space of multiple disks into one large volume, but it doesn’t provide redundancy like RAID 1 and could lead to data loss if one disk fails.
d) Nothing. The RAID array is working as designed:
- This is correct. RAID 1 is designed to mirror data for redundancy, so the total available storage is 1 TB, even though two 1 TB disks are being used.
Final Answer:
Based on the above analysis, the correct answer is:
d) Nothing. The RAID array is working as designed.
In a RAID 1 configuration, you sacrifice additional storage capacity for the sake of data redundancy. The 1 TB of space you’re seeing is correct because the data is mirrored across both disks, effectively using only half of the total physical capacity for unique data storage.
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