VCenter On Demand

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Overview

The vCenter On Demand (aka vCoD) is a service consisting of the following elements:

  • a dedicated cluster, based on "hyperconverged" type physical servers
  • some direct attached storage configured in vSAN
  • a Workload Domain with the vCF stack, that is the Control Plan of the vCoD service.

Workload Domain

The Workload Domain (aka WLD) includes all the vmware management tools for operating dedicated clusters, such as:

  • vCenter
  • vRops
  • NSX-T Manager
  • vRO
  • vRLI
  • vUM

A Workload Domain can be:

  • shared: this is the default configuration, this option is free of charge
  • dedicated : this option is charged.

Management interface

Access to resource administration is optionally via:

  • the vCloud Director portal
  • the vRealize Automation portal (aka VRA)
  • the Customer's (Cloud Management Portal aka CMP), only in case of dedicated Workload Domain.

Configuration

Different types of servers are available for this service:

Type Processor Freq Core RAM
1 1 x Intel Xeon 5128 2,3 GHz 16 192 GB
2 2 x Intel Xeon 5128 2,3 GHz 32 384 GB
3 2 x Intel Xeon 6248R 3 GHz 48 576 GB

vSan technology requires a minimum number of nodes to ensure storage redundancy, which is why the "starter kit" consists of a minimum of 4 servers.

Sizing

Compute capacity

Hypothesis :

  • a VM has an average size of 8 GB of RAM
  • RAM is the most limiting factor, since we never overbook the RAM
  • the compute capacity must integer the loss of a node,

Here are the capacities in number of VM for each configuration :

Nb of nodes Type 1 Type 2 Type 3
4 72 144 216
5 96 192 288
6 120 240 360
7 144 288 432
8 168 336 504
9 192 384 576
10 216 432 648
11 240 480 720
12 264 528 792
13 288 576 864
14 312 624 936
15 336 672 1008
16 360 720 1080

Note: The growth of a cluster is done by adding nodes having the same type.

Storage

The different types of vSan configuration are shown in the table below, along with the storage reduction factor to take into account to go from raw storage to usable storage.

Fault tolerance level vSAN configuration Minimum nodes Reduced storage space
1 FTT=1 / Mirroring 3+ 2x
1 FTT=1 / Erasure Coding 4+ 1,33x
2 FTT=2 / Mirroring 5+ 3x
2 FTT=2 / Erasure Coding 6+ 1,5x

For each node, a storage pack, based on 1,92TB SSD, is available, according to 3 configurations:

  • 4 disks per node
  • 8 disks per node
  • 10 disks per node

Note: the capacities above are raw, unformatted capacities.

Depending on the number of nodes and the pack chosen, here are the total useful available capacities, based on FTT=1 / Erasure Coding protection:

Nodes 4 disks of 1,92 TB per node 8 disks of 1,92 TB per node 10 disks of 1.92 TB per node
Total raw capacity in TB Total usable capacity in TB Total raw capacity in TB Total usable capacity in TB Total raw capacity in TB Total usable capacity in TB
4 30,72 23,10 61,44 46,20 76,80 57,74
5 38,40 28,87 76,80 57,74 96,00 72,18
6 46,08 34,65 92,16 69,29 115,20 86,62
7 53,76 40,42 107,52 80,84 134,40 101,05
8 61,44 46,20 122,88 92,39 153,60 115,49
9 69,12 51,97 138,24 103,94 172,80 129,92
10 76,80 57,74 153,60 115,49 192,00 144,36
11 84,48 63,52 168,96 127,04 211,20 158,80
12 92,16 69,29 184,32 138,59 230,40 173,23
13 99,84 75,07 199,68 150,14 249,60 187,67
14 107,52 80,84 215,04 161,68 268,80 202,11
15 115,20 86,62 230,40 173,23 288,00 216,54
16 122,88 92,39 245,76 184,78 307,20 230,98

Backup

VM are backed up as described here.

Billing

It is a monthly billing, based on:

  • type of starter kit
  • number of additional nodes included into the cluster
  • type of storage pack

Some options are available:

Option Description Billing mode Calculation basis Additional information
vCD vCloud Director license monthly fee n/a Allows the Customer to manage resources in a much simpler way than with the vCenter software. If the Customer has a Cloud Avenue organization of the Public Cloud type, it will be possible to manage all the resources from a single vCD portal.
vRA vRealize Automation license price per node per type of node, all cluster nodes
WLD Dedicated Workload Domain monthly fee n/a Infrastructure dedicated to a Client; contains the following software: vCenter, vRops, NSX-T Manager, vRO, vRLI, vUM
NSX NSX Advanced Load Balancer license price per physical core all the physical core of all the cluster nodes Included into the vCD license
WIN Windows Datacenter Edition license price per physical core all the physical core of all the cluster nodes Mandatory as soon as a Windows VM is hosted on the cluster

Order

The initial order is made via an order form in PDF format, available from your usual sales representative. Capacity increase orders are made in the Cloud Customer Area.

An online devisor makes it possible to carry out a simulation at this address: https://www.myonlinequotation.cleansite.biz/?page_id=1231


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