This post contains some sample high-level, non-official VCF 4 on VxRail architecture diagrams and notes that I have put together for enablement purposes, and may be of use to others.
These diagrams are reflective of VCF 4.2 on VxRail, and are based on the following supported architectures:
Standard Architecture
Consolidated Architecture
Multi-AZ Architecture
Multi-Region (tbc)
Before diving into the architectures, first some high-level details to consider with VCF 4 on VxRail:
Architecture
VCF 4.0 is New Deployments/Greenfield only
No Upgrade Path to VCF 4.0 from 3.9.x
vSphere 7 only
Single Embedded PSC
Consolidated Architecture now supported
Remote VI WLDs supported
NSX Updates
NSX-T only
NSX-T Edges in Mgmt WLD if AVN configured
Options NSX-T:VIWLD
1:1
1:Many
Hardware
Must use VxRail systems only (no non-VxRail h/w)
Min 2 NICs per VxRail node
Standard Architecture minimum of 7 nodes (4+3)
4-node VxRail for VCF Mgmt
3-node VxRail min for VI WLDs
Consolidated Architecture requires 4-node VxRail min
Please refer to the official VCF 4.2 on VxRail 7.0 Architecture Guide for more details.
The architectures in this post are available in Visio format to download at the end of this post.
For general VCF 4.0 on VxRail release details, take a look at this post DELL EMC VXRAIL – INTRODUCING VCF 4.0 from my colleague @DavidCRing.
Sample Standard Architecture
Management with a Single Virtual Infrastructure (VI) WLD
In the above example, note the following details:
All Management WLD and VI WLD vCenter Server and NSX-T Manager instances are located in Management WLD
VI WLD VxRail(s) use External vCenter Server(s)
NSX-T Edges deployed in Mgmt WLD only if AVN configured
NSX-T can be 1:1 or 1:many for VI Workload Domains. In this example it is 1:1 as we have only a single VI WLD.
The 1st VI WLD hosts Shared Edge devices
Each cluster hosts it’s own VxRail Mgr
Management WLD + Single VI WLD including multiple Clusters
In the above example, note the following details:
Single instance of NSX-T for VI Workload Domains
Shared VI WLD vCenter and NSX-T instance
2nd cluster in VI WLD01 uses the existing Edges
Each cluster hosts own VxRail Mgr
Management WLD + Two VI WLDs, using single NSX-T (1:many)
In the above example, note the following details:
Single NSX-T for VI Workload Domains (1:Many)
1st VI WLD hosts Shared Edge devices
2nd vCenter for VI WLD02
Shared VI WLD NSX-T instance
Uses existing Edges in VI WLD01
Each cluster hosts own VxRail Mgr
Management WLD + Two VI WLDs, using two NSX-T (1:1) instances
In the above example, note the following details:
Each VI WLD has own vCenter Server
Each VI WLD has own NSX-T (1:1) instance
Each VI WLD has own Edge devices
Each cluster hosts own VxRail Mgr
added/updated March 2nd 2021
Management WLD + Two VI WLDs, 1 Remote, using single NSX-T (1:many)
In the above example, note the following details:
Single NSX-T for VI Workload Domains (1:Many)
1st VI WLD hosts Shared Edge devices for VI WLD01
2nd vCenter for the remote VI WLD02R
Shared VI WLD NSX-T instance
Requires Edges in the remote VI WLD02R
Each cluster hosts own VxRail Mgr
Sample Consolidated Architecture
In the above example, note the following details:
Single WLD
Single vCenter Server
Single NSX-T instance
Single VxRail Mgr
Resource Pools used for workload Isolation
Single WLD for VCF Mgmt and Tenant workloads (4-node minimum, recommend 8 min)
Scales to 64 hosts, as per vSphere maximums for total hosts (64)
Multi-cluster is possible
Cannot manage additional VI WLDs
Sample Multi-AZ Architectures
Note that for all VCF on VxRail Multi-AZ architectures, the Management WLD MUST be stretched.
VI WLDs, and the clusters within them, can be stretched or Local to either AZ.
The Mgmt WLD requires a min of 4 nodes per site
The 1st VI WLD requires a min 4 nodes per site
Secondary VI WLD Clusters require a min 3 of nodes per site
Node Count must be balanced per site
Stretched Mgmt WLD + Stretched VI WLD
In the above example, note the following details:
Stretched Mgmt WLD
1 x Stretched VI WLD
2 x vCenter Servers
2 x NSX-T instances
Mgmt 1:1
VI WLDs (1:1)
2 x VxRail Mgr
Stretched Mgmt WLD + 2 x Stretched VI WLD, using single NSX-T
In the above example, note the following details:
Stretched Mgmt WLD
2 x Stretched VI WLD
3 x vCenter Servers
2 x NSX-T instances
Mgmt 1:1
VI WLDs (1:many)
2 x VxRail Mgr
Stretched Mgmt WLD + 2 VI WLDs with mix of stretched and local WLDs and clusters, using single NSX-T instance
In the above example, note the following details:
Stretched Mgmt WLD
1 x Stretched VI WLD
2 x Local VI WLDs
4 x vCenter Servers
2 x NSX-T instances
Mgmt 1:1
VI WLDs (1:many)
3 x NSX-T Edges
Mgmt
VI WLD – local to each AZ
4 x VxRail Mgr
Stretched Mgmt WLD + Stretched VI WLD, 2 x Local VI WLDs, using Two NSX-T instances
In the above example, note the following details:
Stretched Mgmt WLD
1 x Stretched VI WLD
2 x Local VI WLDs
4 x vCenter Servers
3 x NSX-T instances
Mgmt 1:1
VI WLDs (1:1)
3 x NSX-T Edges
Mgmt
VI WLD – local to each AZ
4 x VxRail Mgr
Multi Region / DR Architecture
Coming soon on Steve's blog.
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