A company has decided to implement Virtual SAN within their vSphere 6.x environment. The Virtual SAN cluster will be composed of three ESXi 6.x hosts that are
on the Virtual SAN Ready Node list.
Each ESXi host includes:
Two SAS Controllers that support Passthrough Mode
Four Solid State Drives (SSDs) 1TB in size each
20 SAS Magnetic Disks (MDs) 1TB in size each
The SSDs and MDs are evenly split between the two SAS controllers
The company will pilot a Virtual SAN cluster utilizing VMware best practices while maximizing storage capacity. The Virtual SAN cluster will use Manual Mode.
Which two Disk Group configurations would meet the stated configuration requirements? (Choose two.)
A.
4 disk groups with 1 SSD and 5 MDs each
B.
2 disk groups with 1 SSD and 7 MDs each
C.
2 disk groups with 2 SSDs and 7 MDs each
D.
2 disk groups with 1 SSD and 10 MDs each
Explanation:
4 disk groups with 1 SSD and 5 Mds each and 2 disk groups with 1 SSD and 7 Mds each can meet the configuration requirements in the scenario.
https://pubs.vmware.com/vsphere-60/topic/com.vmware.ICbase/PDF/virtual-san-60-administration-guide.pdf
http://www.tomsitpro.com/articles/essential-virtual-san-vsan-book-excerpt,2-888-3.html
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A. 4 disk groups with 1 SSD and 5 MDs each
B. 2 disk groups with 1 SSD and 7 MDs each
it is correct answer.
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From Django Tarzans url :
Disk Group Maximums
In VSAN 1.0, there are a maximum number of five disk groups per host. Each of these disk groups can contain a maximum of one SSD and seven magnetic disks. This means that the VSAN datastore maximum size is seven magnetic disks × five disk groups × number of ESXi hosts in the cluster × size of the magnetic disk. As you see, this is quite scalable and can produce a very large distributed datastore.
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