virtual infrastructure
DESCRIPTION
Virtual Infrastructure.pdfTRANSCRIPT
Virtualisation of IT Resources for
Cloud Infrastructure
2
Virtualisation Technology Overview
• Separation of OS and hardware
• Encapsulation of OS and application into VMs
• Isolation
• Hardware independence
• Flexibility
Virtualisation Properties
Virtualization Layer
3
Virtual Machine Hardware
Up to 4 CD-ROMs
Up to 3 ports Up to 4 ports
1–10 NICs
1–4 SCSI adapters;
1–15 devices per adapter
Up to 255GB RAM
1 floppy controller Up to 2 floppy
drives
VM chipset 1 CPU (up to 8
CPUs with VMware Virtual SMP)
1 IDE controller
Virtual
machine
hardware
is scalable
enough to
meet most
business
and
application
needs.
4
Virtual Infrastructure
5
A Complete Solution for Infrastructure Optimisation
•Multiple Workloads / Server
•Simplified Management
•Opex and Capex Savings
•Resource pooling & allocation
• Instant Provisioning
•Easy, Non-disruptive Scaling
• High Availability
• Dynamic Resource Balancing
• On Demand Capacity
Server Farm
Virtual Machines
Aggregated Virtualization (Consolidate & Simplify)
Network
Virtual Infrastructure Manager
Service Level Assurance (Automate)
On Demand Capacity
Dynamic Resource Scheduling
Storage
High Availability Automate
Manage
Consolidate
6
Deploy VM
according to
needs
Online
Migration
Virtual Infrastructure
7
Consolidate and Simplify Infrastructure
• Consolidate any workload on any h/w
• Consolidate heterogeneous workloads
(including legacy applications) on the
same server
• Migrate workloads from physical to
virtual environments easily
• Consolidate multiple environments
(Production, Disaster recovery, Development
or Branch office)
• Achieve Consolidation ratios of up to
20:1!
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Reduce Excess Server Capacity
1,000
Direct attach
3000 cables/ports
200 racks
400 power whips
8
BEFORE virtualised AFTER virtualised
80
Tiered SAN and NAS
400 cables/ports
10 racks
20 power whips
Servers
Storage
Network
Facilities
9
Benefits of Consolidation
9
+
+
+
• Fewer Servers to Manage
• Less Power required
• Less Space needed
• Less Cabling required
3-Year Cost Savings / Workload
Server Hardware $5,816
Power Costs $759
Cooling Costs $949
Data Center Real
Estate $431
Network
Infrastructure $296
TOTAL $8,251
10
Data Centre Virtual Infrastructure Topology
FC SAN iSCSI SAN NAS
Virtual Infra Mgr
VI
Client
FC Sw Fabric IP
Hypervisor
VM VM VM VM VM
Web
Cluster 3 Cluster 2 Cluster 2
Browser
Graphical Terminal
11
Virtual Infrastructure Management
Server Farm
ESXi Server
ESXi Server
ESXi Server
ESXi Server
ESXi Server
ESXi Server
Virtual Infrastructure
ESXi Server
Network
Storage
Virtual Infrastructure Manager
VC Agent VC Agent VC Agent VC Agent VC Agent VC Agent VC Agent
Virtual Machines
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Anatomy of Virtual Networking
Service
Console
Production
Network
VM0 VM1 VM2 VM3
ESX Host
vmkernel
Port Group
Virtual Switch
(vSwitch)
Virtual
Machine (VM)
Virtual NIC
(vnic)
Physical NIC
(vmnic or pnic)
Physical switch
Service Console
(management port)
Vmkernel
(port for IP Storage
and VMotion)
Uplinks
vSwitch
Mac addresses (L2)
assigned to vnics
VLAN Trunk
(overlaid on uplinks in
VST mode)
NIC Teams
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14
8 x 4 x 2 x 4GHz =
256 GHz
8 x 32 = 256 GB RAM
Virtualised Hosts, Clusters and Resource Pools
4 x 2 x 4GHz = 32 GHz
32 GB RAM
Cluster
Host
VM VM VM
Accounting Dept RP
4 GHz
16 GB RAM
VM
Financial Division RP
Payroll VM
8 GHz
32 GB RAM
VM
Other VM’s
x86 Server
4 GHz
16 GB RAM
x86 Server
4 GHz
16 GB RAM
x86 Server
4 GHz
16 GB RAM
Virtual
Physical
12 GHz
48 GB RAM Cluster
4 GHz
16 GB RAM
4 GHz
16 GB RAM
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What is HA?
HA is when a server failure
occurs the VM’s on it will be
automatically restarted in
other physical servers.
Customer Benefits
High availability for all
applications and low cost
Hardware configuration need
not be exactly the same for all
servers.
Better cost advantages than
the traditional cluster, easy to
use and operate.
High Availability (HA) can be easily adopted to improve the
high availability of any application
Resource Pool
X
16
SAN / NAS / iSCSI
Virtual Infra Manager
HA illustration
Virtualised Server failed
Virtualised Servers ensure High Availability
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x86 Architecture
Virtualised Server
x86 Architecture
Virtualised Server
V-motion migrates VM’s
SAN、iSCSI or NAS
A V-Motion migration moves a powered-on virtual machine from one host to another.
The demo below shows how V-Motion can reduce downtime due to system maintenance.
Uses of V-Motion:
To improve overall hardware utilisation
To allow continuous virtual machine operation while accommodating scheduled hardware downtime
To allow Distributed Resource Scheduler (DRS) to distribute the virtual machine workload across hosts
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Memory Bitmap V-Motion network
Production network
How V-Motion Works
Memory bitmap
Memory Memory bitmap Copy pages
Memory bitmap
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Storage V-Motion Migration
App
操作 系统
App
操作 系统
App
OS
Use Storage V-Motion for:
Performing storage maintenance and reconfiguration
Redistributing storage load
Evacuating physical storage about to be retired
Storage tiering
Upgrading hosts without virtual machine downtime
Storage V-Motion is storage type–independent.
Source and destination can be different storage types.
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V-Motion Requirements
A virtual machine must meet certain requirements. For example:
A virtual machine must not have a connection to a virtual device (such as CD-ROM or floppy drive) with a local image mounted.
A virtual machine must not have CPU affinity configured.
The source and destination hosts must meet certain requirements. For example:
Visibility to all storage (Fibre Channel, iSCSI, or NAS) used by the virtual machine
A Gigabit Ethernet backplane and access to the same physical networks
Compatible CPUs:
CPU feature sets of both the source and destination host must be compatible.
Some features can be hidden using Enhanced VMotion Compatibility or compatibility masks.
21
Resource Pool
Business requirements & priorities
Distributed Resource Scheduler (DRS)/
Distributed Power Management (DPM)
Description
• DRS continuously monitors virtual machines and physical servers to
optimally align compute capacity to application requirements based on
business priorities
• DPM optimizes DRS clusters for the lowest possible power consumption
Benefits
• Automated matching of application
demand to computing resources
• Simplified operational management
and higher levels of utilization in virtual
environments
• Up to an additional 20% reduction in
power
costs with DPM
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Automate Resource Assurance
• Dynamically balance resources
across apps from resource pools
• Continuously Monitor resource
utilization across resource pools
• Set rules, policies and priorities as
for resources sharing (incl.
dedicated resources)
• Automatic Migration of workloads
to meet changing resource needs
• No downtime during workload
migration or server maintenance
Oracle
SQL Server
Apache
SAP
Exchange
DNS/DHCP
Citrix
!
Resource Pools
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Virt Server 1 Virt Server 2 Virt Server 3
SAP
Citrix
DNS/DHCP
Oracle
SQL Server
Apache
Exch Server
SAN Storage
DRS for Load Balancing
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Always On, On Demand Data Center
X
Automated Resource Assurance
Dynamic Balancing Continuous Optimization
Increased Availability
Automated Across Applications
On Demand Capacity
Non-disruptive Scaling Flexible, Reconfigurable + +
As virtualization matures and becomes default, the "next big thing" will be automation.
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The Infrastructure Optimization Problem
Key IT Challenges/ Constraints
Server
Hardware Costs
Operating
Expenses
Hi-Availability / DR
Plan Coverage
Resource Utilization
by workloads
1
2
3
4
5
6 < 20%
< 10% Coverage
~ $4,000/
Server/year
~$5,500/ Server /
year
Key IT Objectives
Reduce Capital and Operational
Costs 1
2
3
Simplify Management
Meet Service Levels Efficiently
Time to provision /
Move / Change Weeks/ months
% Spend ( Maintain
vs. innovate) 72% / 28%
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Meet Optimization Objectives & Transform key metrics
Key IT Objectives Key IT Metrics
3 Meet Service levels efficiently Automate
Service Level Assurance 6
5
>90% apps assured of
>99.9% availability
Improve resource
utilization across all apps
by 3-4X
Reduce Capital and Operational
Costs 1
Consolidate and
Simplify Infrastructure
2
1
Defer Data Center
Expansion by years
Reduce Capex by >70%
and Opex by > 80%
Time to provision, move,
change - down to minutes! 2 Simplify Management Manage Infrastructure
Efficiently & Effectively
4
3 Increase time spent on
strategic projects by 2X
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Q & A