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W H I T E P A P E R / 4
VMware vSphere 5
SnSisrequiredforallvSpherepurchases
W H I T E P A P E R / 4
VMware vSphere 5
Figure 1 shows a comparison between the VMware vSphere 4.x and
VMware vSphere 5 licensing models.
Monitoring of Pooled vRAM Capacity
Available and configured vRAM capacity can be monitored and
managed using the licensing-management module of VMware
vCenter Server. Customers can create reports and set up alerts to
obtain automated notification of when the level of vRAM used
surpasses a specified level of the available pooled capacity.
Why a Change Was Necessary
With the modification to vSphere licensing, we accomplish
two objectives:
•Freecustomersfromrestrictivehardware-basedentitlements
•AlignthevSpherelicensingmodelwithITasaservice
To understand reasons for the change, we should first examine the
legacy VMware vSphere model. VMware vSphere 4.x is licensed on
a per-physical-processor (CPU) basis with limits on:
•ThenumberofphysicalcoresperCPU
•PhysicalRAMcapacityperserver
Significant innovations in hardware design—such as CPUs with
ever-larger number of cores, high-density memory chips, solid-
state drives and hyperthreading—were causing the hardware
limits in VMware vSphere 4.x licensing to become outdated. In
the 24 months since the release of VMware vSphere 4.0, multicore
capacity of x86 CPUs grew from 2–4 cores per CPU to 8–12 per
CPU. Processor manufacturers have announced plans to introduce
CPUs that will exceed 12 cores. CPU manufacturers have introduced
or plan to introduce technologies—such as hyperthreading—that
work at the subcore level and increase processing power by
improving parallelization of computations. Similar growth and
innovation trends are also happening on the memory side, with
RAM chip density growing from 4GB per DIMM to 8GB and 16GB
per DIMM and new types of memory technologies—such as solid-
state-drive (SSD)—becoming mainstream. This innovation trend
in server hardware technologies is rapidly making the hardware
restrictions of VMware vSphere 4.x licenses outdated posing
diculties for customers to plan future investments in
infrastructure and virtualization.
Figure 1. vSphere 4.x vs. vSphere 5 Licensing Comparison
Licensing Unit
Core per proc
SnS Unit
Physical RAM
Capacity per host
Pooling of
entitlements
vRAM entitlement
per proc
=
=
<
<
<
=
CPU
CPU
Restrictions by vSphere
editions
- 6 cores for Standard
and Enterprise, ESS,
ESS+
- 12 core for Advanced
and Ent. Plus
Restrictions by vSphere
edition
- 256GB for Standard,
Advanced and
Enterprise, ESS, ESS+
- Unlimited for
Enterprise Plus
Not applicable
Not applicable
VMware vSphere 4.1
and prior
Per CPU with Core and
Physical Memory Limits
CPU
CPU
Unlimited
Unlimited
YES - vRAM
entitlements are pooled
among vSphere hosts
managed by a vCenter
or linked vCenter
instance
Entitlement by
vSphere edition
- 32GB vRAM for
Essentials Kit
- 32GB vRAM for
Essentials Plus Kit
- 32GB vRAM for
Standard
- 64GB vRAM for
Enterprise
- 96GB vRAM for
Enterprise Plus
VMware vSphere 5.0
and later
Per CPU with vRAM
Entitlements
Compliance
policies
Max amount of
vRAM per VM
counted
Monitoring tool
<
=
=
• Purchase in advance
of use
• High Watermark
Not applicable
Not applicable
• Purchase in advance
of use
• 12 months rolling
average of daily
high watermark
96GB - a powered on
VM will count for a
maximum of 96GB
against the pool
regardless of its actual
configured amount
YES - built-into vCenter
Server 5.0
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