EBC Single Tenant Compute

EBC ST Host

The host in an EBC Single Tenant (ST) environment is based on a standard server configuration. Server Type “EBC HV GC” is the standard server.

For EBC environments with more demanding memory requirements, there is a High Memory Hypervisor server type. This can be used on request. The table below lists the currently available hypervisor server types with the amount of usable capacity that a single hypervisor server adds to a cluster.

Hypervisor Server Type Deployment Use Case # Available GB RAM1 # Available CPU Cores1 CPU Core Speed
EBC HV GC v1/v3 Standard Generic Compute 500 30 ≥ 2.4 GHz
EBC HV HM v1/v3 Optional High Memory 1000 30 ≥ 2.4 GHz
Note:
1. Net Capacity of the cluster.

EBC ST Cluster

An EBC3.0 ST environment is delivered in a cluster. A cluster consists of three or more hypervisors of the same type. The type of cluster defines the availability and SLA characteristics of the service. Supported cluster types are:

  • Single cluster, single data center

  • Multi cluster, multi datacenter

  • Single cluster, dual data center (stretched-cluster)

A single cluster, single data center is advised for applications that demand high availability. The recovery ability for this cluster type is primarily realized by the backup.

If your application demands the highest availability and ability to recover, the stretched cluster and multi cluster multi data center are advised. The stretched cluster option is used if the application availability depends on the infrastructure, due to synchronous replication (RPO=0). VMs in this case, can be recovered in the second data center in minutes without data loss.

The multi cluster, multi data center type is advised if the application itself can manage the availability and ability to recover.

An EBC ST environment has a cluster configuration of at least three hosts in which two hosts are for use and one is spare (N + 1 principle).

The (N + 1) cluster has a maximum of 15 hosts (14 + 1); an extra spare server is required above this number.

The maximum cluster size is 44 hypervisor servers (42 + 2). The capacity of the spare server(s) is dedicated to ensuring high-availability and it's unavailable for regular use and, therefore, it's not included in the net capacity. The overview below shows examples of cluster sizes, including the minimum and maximum sizes, and the associated usable net capacity in numbers of usable CPU Cores and GB RAM.

EBC ST Cluster Size Hypervisor Server Model # Spare Servers # Available CPU Cores1 # Available GB RAM1
3 (2+1) minimum EBC HV GC v3 1
 60 1000
EBC HV HM v3 1 60 2000
15 (14+1) EBC HV GC v3 1 420 7000
EBC HV HM v3 1 420 14000
17 (15+2) EBC HV GC v3 2 450 7500
EBC HV HM v3 2 450 15000
44 (42+2) maximum EBC HV GC v3 2 1260 22000
EBC HV HM v3 2 1260 44000
Note:
1. Net Capacity of the cluster.

An EBC ST environment can include multiple “Virtual Data Centers” (VDCs). For more information about a VDC, see Virtual Data Center.

Use cases for multiple VDCs can consist of applying desktop virtualization, separate production and OTA environments, license restrictions or vCPU guarantees. The VDCs use the capacity that the hypervisor servers add to a cluster.

EBC ST Purchase Units

EBC ST has the following types of purchase units:

  • Cluster Management

    Cluster Management is the fee for the management of the cluster.

  • Cluster Hosts

    The Cluster Hosts are the compute hosts in the cluster, available in the following variants:

    • Small Cluster Host – consisting of a minimum of 3 (2 + 1) hosts
    • Rack Cluster Host – consisting of a minimum of 24 (22 + 2) hosts

    Note: The cluster hosts are committed for the full contracting period.

  • Additional Hosts

    Additional Hosts can be contracted to accommodate growth and contraction in the contract. These hosts can be traded in after 12 months of usage.

    Important: Additional Hosts and Cluster Hosts must be of the same type (Generic Compute or High Memory).

  • VMware License Points

    This is a pay-as-you-go item for the billing of the used VMware licenses. VMware licenses are based on the used GBRam for VMs per hour. Only the VMs that are powered-on will be charged. For more information on VMware-related charging, refer to Metering.

The different kind of purchase units for EBC ST are described in the table below.

Purchase Unit Type Host Guarantee Billing Type Description
EBC ST – cluster management N/A

  • Standard

  • High

  • Full

 Baseline Management fee for the cluster.
EBC ST Small Cluster Host

  • Generic Compute

  • High Memory

 Small Cluster Baseline

Agreed amount of hosts in the cluster

  • Small (min 2+1)
EBC ST Rack Cluster Host

  • Generic Compute

  • High Memory

 Rack Cluster Baseline

Agreed amount of hosts in the cluster

  • Rack (min 2+1)
EBC ST - Additional Host

  • Generic Compute

  • High Memory

 N/A Baseline Additional host with 12 month commitment.
VMware license points N/A N/A Pay as you go VMware licensing fee

EBC vCPU

On the EBC platform, one CPU is equal to at least 2.4 GHz. There are three vCPU variants, each with its own guarantee value. The standard variant guarantees 25% of the capacity (0.6 GHz); called the guarantee value. The guarantee value on vCPU resources in the standard variant then is 1:4. The available vCPU guarantee values are shown in the below table.

vCPU Variant vCPU Guarantee Value Use Case
EBC vCPU Standard Guarantee (default) 1:4 (25%)

  • Generic production servers

  • OTA servers
EBC vCPU High Guarantee 1:2 (50%)

  • Medium load application servers
EBC vCPU Full Guarantee 1:1 (100%)

  • Terminal servers

  • High-load application servers

  • Latency-sensitive application servers

Using EBC ST

  • You can choose multiple hosts and clusters that match the resource request.

  • Multiple guarantees of vCPU can be mixed in one EBC ST Cluster by adding an extra Virtual Data Center (VDC).

  • EBC ST has, within the limits of the host, no maximum size of a VM for the use of compute resources. There are recommendations for the best performance of a VM. Adding more compute resources to a VM above the recommended size does not always lead to performance improvements.

  • For EBC ST, the maximum recommended VM size is 8 vCPU and 64 GB vRAM.

Micro-segmentation

See Micro-segmentation to learn more.