You have a server that runs Windows Server 2012 R2.
You need to create a volume that will remain online if two disks in the volume fail.
The solution must minimize the number of disks used to create the volume.
Which three actions should you perform in sequence?
A.
Add five physical disks
B.
Create a storage space and set the disk allocation of one of the disks to “Hot Spare”
C.
Create a virtual disk
D.
Create a storage space by using the default disk allocation
E.
Add three physical disks
Explanation:
A storage space with three-way mirroring can tolerate two disk failures but requires a minimum of
five disks.
References:
http://technet.microsoft.com/en-us/library/hh831739.aspx
http://technet.microsoft.com/en-us/library/jj822938.aspx
http://technet.microsoft.com/en-us/library/jj899886.aspx
http://technet.microsoft.com/en-us/library/5de72fb5-e1e3-43a7-a176-d17cdf4d312e
acd? or adc?
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In real life I would use a hot spare.
https://technet.microsoft.com/en-us/library/jj822938.aspx
In the steps on creating a storage pool it says to pick a hot spare….
I would go with ABC in that order
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Then u will need an extra physical disk , as only 4 will be online if u have 1 hot spare , and 4 disks arent enough for 2 disk failure tollerance
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Good point….I forgot to figure in the 2 failed disk. ACD.
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you can’t make a pool of virtual disks so it’s adc
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http://blogs.technet.com/b/tip_of_the_day/archive/2013/08/29/tip-of-the-day-3-way-mirrors.aspx
In Windows Server 2012 Storage Spaces and Windows 8 Storage Spaces, a 2-way mirror requires at least 2 physical disks. However, a 3-way mirror requires at least 5 physical disks.
The reason is that a 3-way mirror uses a quorum. In order to keep running, the mirror space must keep over 50% of the disks functioning. So a 3-way mirror must have at least 5 physical disks to be able to survive the loss of up to 2 physical disks.
A 2-way mirror does not require this type of majority vote.
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Billkom: Finally an answer that makes sense!
ADC
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another quest with stupid answers
D ? there is no “default disk allocation” you have the choice of Simple, Mirror or Parity (Simple would be the default if you just clicked Next)
The steps you need are:
1. add 5 physical disk to the computer
2. create a storage Pool using the five disks
3. create a storage Space using the 5 disks in the pool and select Mirror
BTW you use a lot of disks but do not end up with a lot of usable space
3 – 19.3GB disk in a simple mirror = 27GB usable
5 – 19.3GB disk in a 3 way mirror = 30GB usable
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Box 1: Add five physical disks.
Box 2: Create a storage space by using the default disk allocation.
Box 3: Create a virtual disk.
In Windows Server 2012 Storage Spaces, a 3-way mirror requires at least 5 physical disks.
The reason is that a 3-way mirror uses a quorum. In order to keep running, the mirror space must keep over 50% of the disks functioning. So a 3-way mirror must have at least 5 physical disks to be able to survive the loss of up to 2 physical disks.
Moreover, we need to make a difference between storage space and storage pool:
A pool is simply a logical grouping of physical disks, whereas a storage space is a virtualized disk that can be used like a physical disk.
To be sure about the answers, try to go through the creation process of the volume and you will see more explanation.
Hope it helps.
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