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Tuesday, 1 January 2019

vSAN 6.7 Storage Policies in vSphere Client (HTML5 Based) - Rules Renamed

In New vSphere Client vSAN Storage Policy Rules are renamed. Lets discuss about what are the new names applicable in vSphere Client
These policy components to determine fault tolerance:-
Site disaster tolerance: Governs fault tolerance between sites.
Failures to tolerate: Governs fault tolerance within each site.


Site Disaster Tolerance
1. None-Standard Cluster = This keeps the data only in one site.
2. None-Standard Cluster with nested fault domains = This Policy keeps the data across fault domains.
3. Dual Site Mirroring (Stretched Cluster) = vSAN maintains replicas of each component on both sites. If the preferred site goes down, the replica on the other site is available to continue operations.
4. None-Keep the data on Preferred (Stretched Cluster) = All components of an object are kept within the preferred site. Use this policy with DRS rules to restrict the VM compute resource to the preferred site hosts.
5. None-Keep the data on Non-Preferred  (Stretched Cluster) = All components of an object are kept within the non-preferred site.Use this policy with DRS rules to restrict the VM compute resource to the non-preferred site hosts.
6. None-Stretched Cluster = This policy localizes object components to one site or the other, based on the balance of data between sites.

Failures to Tolerate
1. No Data Redundancy = This is equivalent to PFTT=0
2. 1 Failure -RAID-1 (Mirroring)
3. 2 Failures -RAID-1 (Mirroring)
4. 3 Failures -RAID-1 (Mirroring)
5. 1 Failure -RAID-5 (Erasure Coding)
6. 2 Failures -RAID-6 (Erasure Coding)

For Rest of the rules configuration in your storage policies Use "Advanced Policy Rules" Tab

 

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