A business unit requires proprietary data to be protected against a site failure while using the least amount of storage and the least amount of nodes. An administrator plans to implement a vSAN OSA…

The correct answer is B. 6. A vSAN OSA Stretched Cluster with dual-site protection and local RAID-5 requires: - 2 data sites (each providing local protection via RAID-5), and - 1 witness host (for quorum). RAID-5 (erasure coding) needs at least 4 hosts per site to provide parity and data distribution…

Planning and Designing VMware vSAN Implementations

Question

A business unit requires proprietary data to be protected against a site failure while using the least amount of storage and the least amount of nodes. An administrator plans to implement a vSAN OSA Stretched Cluster with dual-site protection and a local RAID-5 policy. What is the minimum number of data nodes across all sites in this vSAN OSA Stretched Cluster configuration?

Options

How the community answered

(61 responses)

A
31% (19)
B
48% (29)
C
15% (9)
D
7% (4)

Explanation

A vSAN OSA Stretched Cluster with dual-site protection and local RAID-5 requires: - 2 data sites (each providing local protection via RAID-5), and - 1 witness host (for quorum). RAID-5 (erasure coding) needs at least 4 hosts per site to provide parity and data distribution. However, to meet the requirement of the least number of nodes, VMware allows RAID-1 mirroring between sites combined with RAID-5 inside each site. This configuration requires a minimum of 3 data nodes per site (6 total) plus a witness host (which doesn't count as a data node). Thus, the minimum number of data nodes is 6 across both

Topics

#stretched cluster#RAID-5#dual-site protection#minimum node count

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