Striped Disks question

susuandme

Hi,

I was having trouble with this question, it talks about converting "2" disks into a stripe set, when the computer has 3 identical sized disks, can you just convert 2 disks into a stripe set, why not convert all 3 disk, why are they saying convert only 2 disks ???

pc has three identical 4-GB hard disks. The configuration of the
hard disks is shown here

0 (basic) C (system) 4.0 GB free 1.0 GB
1 (basic) D 2.5 GB free 0.8 GB
1 (basic) (Unallocated) 1.5 GB free (Not applicable)
2 (basic) E 1.5 GB free 1.2 GB
2 (basic) (Unallocated) 2.5 GB free (Not applicable)

You wish to configure the computer's disks so that you can store 2.5 GB of new
data. You want to ensure that you optimize the performance with which the 2.5 GB
of data can be written to the disks.

Which two actions should you take? (Each correct answer part of the
solution. Choose two)
A. Convert both disk 1 and disk 2 to dynamic disks.
B. Convert only disk 2 to a dynamic disk.
C. Extend volume D to include the unallocated space on disk 1.
D. Create a new spSandrad volume that contains the 1.5 GB of unallocated space on disk
1 and 1.5 GB of the unallocated space on disk 2.
E. Create a new stripped volume that contains 1.5 GB of unallocated space on disk 1 and
1.5 GB of the unallocated space on disk 2.
Answer: A, E

dynamik

You can do three, but you don't need to. In this example, they might want to keep the OS separate. Plus, you only need two to satisfy the requirements of having a 2.5gb striped set.

Dagged

"You want to ensure that you optimize the performance with which the 2.5 GB
of data can be written to the disks".

You need to Optimaze the performance and only stripped can optimaze it and to make stripped you need to have this same amount of free space. That is why you can use only 2 disck. If you want to use 3rd disck also you will have to do spanned due to different size of free space, but it won't optimaze the performance

susuandme

0 (basic) C (system) 4.0 GB free 1.0 GB
1 (basic) D 2.5 GB free 0.8 GB
1 (basic) (Unallocated) 1.5 GB free (Not applicable)
2 (basic) E 1.5 GB free 1.2 GB
2 (basic) (Unallocated) 2.5 GB free (Not applicable)


Thankyou for your help, but can you explain this a little further, you mentioned they are trying to optimize 2.5 gigs of data for best performance.

Yet the disk are 4 Gigs each. so I am confused here on the number, you said now they all have to be 2.5 gigs, yet the disks are 4 gigs. I above though that the first disk "0" has no partitions, but disk "1" only has 1.5 gig of unallocated space, Disk "2" has 2.5 gigs of unallocated space. So to me disk 1 and disk 2 have different allocations of space, where do the strips sets go, can you explain a little more, I'm a little thick..thanks

Dagged

I know my previous post wasn't clear

this part is form question : ""You want to ensure that you optimize the performance with which the 2.5 GB
of data can be written to the disks"."

It wasn't me who said you need to have 2.5

The whole story in this question is about optimize performance and additionally fit 2.5GB of data. That is what they want from you.


but disk "1" only has 1.5 gig of unallocated space, Disk "2" has 2.5 gigs of unallocated space.

Yes but when you are making stripped volume the size of volume will be multiple of size of the smallest drive used to make stripped volume. this is what i meant saying they has to be this same. Sorry for confusion;)


And Stripped volume is faster because data can be written to the two disk simultaneously.

And the most important thing is to make stripped volume (or spanned also ;P ) disks must be dynamic


first disk "0" has no partitions

It has and it is system partition.

susuandme

yes thanks

Dagged

I edit my post maybe now it is more clear