You have a server named Server1 that runs Windows Server 2012 R2.
You plan to create a storage pool that will contain a new volume.
You need to create a new 600-GB volume by using thin provisioning. The new volume must
use the parity layout.
What is the minimum number of 256-GB disks required for the storage pool?
A.
2
B.
3
C.
4
D.
5
Explanation:
Based on the RAID calculators, in order to do a parity drive (raid 5) of 600GB will require at
least 4 drives.
References:
http://technet.microsoft.com/en-us/library/hh831391.aspx
http://www.ibeast.com/content/tools/RaidCalc/RaidCalc.asp
http://www.raid-calculator.com/default.aspx
https://www.icc-usa.com/raid-calculator
3×256 GB for volume + 1×256 GB for parity
I have wrong answer
Storage pool dont use RAID, it has own similat to RAID tehnology
Dave is correct in Thin provision minimal requirement is 3 drives for parity layout.
For fixed volume you need 4 drives
3 drives is correct – the key in the question is thin provisioning. RAID5 doesn’t come into it
4 Drives. You need 3 drives to make the capacity greater than 600 GB. Don’t forget You lose one drive for parity in a RAID5. So the answer is 4.
Yep. You made me see the light. 3 drives are needed for parity, and since it is thin, a 4th is not needed to exceed the size of the drive. However if it was thick provisioned, then you would need a 4th drive.
Microsoft dont use thick provision therm, it’s from VMWare.
Microsoft use only thin or fixed .
Parity applies at the Virtual disk level, not at the volume level. I believe this question is purposefully misleading. When you create the virtual disk, you specify the type of disk to create: Simple, Mirror or Parity. Once the virtual disk is created, you create your volume and choose either Thin or Fixed Provisioning. There is no option for a “Parity” volume.
Therefore, regardless of the volume type this will require 4 Disks. Because, even if the disk is Thin Provisioned, it could grow beyond the capacity of a 3 disk parity virtual disk (Total capacity = Disk Capacity * (Number of disks – 1) or 256 * (3-1) = 512 < 600GB).
Here's a great explanation of storage pools: http://blogs.technet.com/b/yungchou/archive/2012/08/31/windows-server-2012-storage-virtualization-explained.aspx
The answer should be C: 4.
I would go with answer B just because they mention “thin provisioning”. It’s not the same as RAID.
http://www.hardware-revolution.com/microsoft-storage-space-configuration/
i have added 3 disk on my server..250 GB x 3
Created storaged pool with 3 disk.
and i created new volume on this pool with 3 disk ….set one disk for parity and as this provision…
and in the end specify size….i wrote 2 TB. thats it…
answer is B.
I second the B – if it says thin provisioned then it doens´t matter how much space you actually got. You only need at least 3 disks in pool to be able to choose Parity. Then you can create volume as big as you please.
Vietnam Right!
No mention of raid in the question, so it must be B
BUT – Windows 2012 R2 comes with Parity Spaces , requiring 3 disks minimum,
3 x 256 = 768gb – 600gb = 168GB, is 168GB enough space for the Parity Slabs to be used? Is that why C is the correct answer? check this – http://www.eightforums.com/general-support/16615-confused-storage-spaces-parity-free-space.html
The question ask us 3 things:
– 600-GB volume by using THIN provisioning
– volume must use the parity layout (VOLUME not storage pool)
– What is the minimum number of 256-GB disks required for the storage pool?
Just for sure, I tried to make a 2 Disk Storage Space. Then, of course, your are not able to create a Virtual Disk with parity. You need minimal of 3 disk in storage space for parity virtual disk.
I think answer is B, 3 disk. You cannot use 600Gb but you can create a 600Gb volume
KEY WORD ” THIN PROVISIONING” … ANSWER IS 3
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