Storage Virtualization

ISM ‐ Course Organization

Section 3 Business Continuity Section 4 Storage Security and Management Introduction to Information Storage and Management

Storage System Environment

Data Protection: RAID

Intelligent Storage System

Direct-Attached Storage and Introduction to SCSI

Storage Area Networks

Network-Attached Storage IP SAN Content-Addressed Storage Storage Virtualization Introduction to Business Continuity

Backup and Recovery

Lesson –Virtualization Overview

Upon completion of this lesson, you will be able to:

Virtualization Comes in Many Forms

Each application sees its own logical

memory, independent of physical memory

Virtual

Memory

Each application sees its own logical

network, independent of physical network

Virtual

Networks

Each application sees its own logical

server, independent of physical servers

Virtual

Servers

Each application sees its own logical

storage, independent of physical storage

Each application sees its own logical

memory, independent of physical memory

Virtual

Memory

Memory Virtualization

Benefits of Virtual Memory

•

Remove physical-memory limits

•

Run multiple applications at once

Physical memory

Swap space

App

App

Each application sees its own logical

network, independent of physical network

Virtual

Networks

Network Virtualization

Benefits of Virtual Networks

•

Common network links with

access-control properties of separate links

•

Manage logical networks instead of

physical networks

•

Virtual SANs provide similar benefits

VLAN A VLAN B VLAN C

Switch

Server Virtualization

Before Server Virtualization:

Operating system

Application

Single operating system image per

machine

Software and hardware tightly coupled

Running multiple applications on same

machine often creates conflict

Underutilized resources

After Server Virtualization:

Virtual Machines (VMs) break

dependencies between operating

system and hardware

Manage operating system and

application as single unit by

encapsulating them into VMs

Strong fault and security isolation

Hardware-independent

Virtualization layer

Operating system

App App App

Lesson Summary

Key topics covered in this lesson:

o

Various forms of virtualization

o

Memory, network, server and storage virtualization

Additional Task

Research on Virtual LAN

SNIA Storage Virtualization Taxonomy

Storage

Virtualization

Block

Virtualization

Disk

Virtualization

File System,

File/record

Virtualization

Other Device

Virtualization

Tape, Tape Drive,

Storage Virtualization Requires a Multi‐Level Approach

Server

Storage

Network

Storage

Path management

Volume management

Replication

Volume management - LUNs

Access control

Replication

RAID

Path redirection

Storage Virtualization Configuration

(a) In out-of-band implementation, the virtualized environment configuration is stored external to the data path

(b) The in-band implementation places the virtualization function in the data path

Block‐Level Storage Virtualization

o

Ties together multiple 

independent storage arrays

o

Presented to host as a single storage 

device

o

Mapping used to redirect I/O on this 

device to underlying physical arrays

o

Deployed in a SAN environment

o

Non‐disruptive data mobility and 

data migration

o

Enable significant cost and 

resource optimization

Servers

File‐Level Virtualization

Every NAS device is an independent

entity, physically and logically

Underutilized storage resources

NAS Devices/Platforms

Before File-Level Virtualization

IP

Network

Storage

Array

File

Server

File

Server

Clients

Clients

Break dependencies between end-user

access and data location

Storage utilization is optimized

NAS Devices/Platforms

After File-Level Virtualization

Lesson: Summary 

Key points covered in this lesson:

o

Storage virtualization challenges

o

Storage virtualization configuration

o

Types of storage virtualization

Additional Task

Research on Global File

Concept in Practice – EMC Invista

Inside the Intelligent Switch

Invista Video

Click here

Automount

NIS LDAP

DFS

AD

Concept in Practice: EMC Rainfinity

NFS4 Root

NIS LDAP

Global

Namespace

Manager

Event Log

n

File Virtualization inserted

into I/O

o

Client redirection

Global Namespace updated

Rainfinity Video

Click here to play the video

What is Virtual Provisioning 

o

Capacity‐on‐demand from a shared storage pool

o

Logical units presented to hosts have more capacity than physically allocated

o

Physical storage is allocated only when the host requires it

o

Provisioning decisions not bound by currently available storage

o

Above and beyond “Thin Provisioning”

o

Includes management tools that make it easier to configure, use, monitor and 

manage Thin Pools and Thin LUNs

Allocated

Allocated

Allocated

Host

Reported

Capacity

Shared

Storage Pool

Traditional Provisioning 

Traditional Provisioning vs. Virtual Provisioning

1650 GB

Or

1.65 TB

Available

Capacity

350 GB

Actual Data

Storage System

Virtual Provisioning – Thin Pool Expansion

o

Adding drives to the pool non‐disruptively increases available 

shared capacity for all Thin LUNs in pool

o

Drives can be added to a Thin Pool while pool is being used in production

o

Allocated capacity is reclaimed by the pool when Thin LUNs 

are deleted

Lesson Summary

Key points covered in this module:

o

Virtual Provisioning 

o

Thin vs. Traditional LUNs

EMC Proven Professional

The #1 Certification Program in the information storage 

and management industry

Use of Cloud Computing Resources

o

“Cloud computing” takes hold as 69% of all internet users 

have either stored data online or used a web‐based software 

application

Concept in Practice – Atmos Video

Exercise & Quiz

External Links

o

VMware ‐ Optimize and manage your IT infrastructure, from the desktop to the data center, by 

virtualizing your computing systems. 

o

Rainfinity File Virtualization Family ‐ Virtualize your unstructured data environment and move 

data—including active, open files—without disruption. Simplify management of your NAS 

infrastructure and lower TCO as part of your ILM strategy. 

o

Invista ‐ Add intelligence to your existing SAN infrastructure to achieve non‐disruptive 

operations, to eliminate planned downtime, and to centralize and streamline storage 

management and mobility. 

o

Ionix IT Compliance Analyzer‐Application Edition ‐ Automatically identify, monitor and alert IT 

managers of application configurations and dependencies that violate user‐defined policies, 

industry regulations and standards, and best practices. 

o

Ionix Server Manager ‐ Gain automated root‐cause and business impact analysis for virtualized 

servers and applications. 

o

Ionix Application Discovery Manager ‐ Automated, real‐time discovery and dependency mapping 

for applications and their hosts across virtual and physical environments. Accurately manage 

change impact, control configuration drift, correlate infrastructure incidents to application 

impact, populate CMDBs, and drive data center consolidation, migration and virtualization. 

o

Ionix ControlCenter ‐ Simplify and automate tasks such as discovery, monitoring, reporting, 

planning, and provisioning for large, complex physical and virtual infrastructures. 

Quiz – End of Section 2

o

Storage Networking ‐ Technologies and Virtualization

o

Direct‐Attached Storage and Introduction to SCSI

o

Storage Area Networks

o

Network‐Attached Storage

o

IP SAN

o

Content‐Addressed Storage

o

Storage Virtualization

Section 2_Quiz

For Instructor Use Only

For your Reading on 

www.emc.com

o

Understand Basics of virtualization, Review analyst paper, whitepapers & 

Customer Stories

For your Reading on 

www.vmware.com

Watch the Full Keynote Address 

on www.emcworld.com/keynotes.htm 

or 

www.youtube.com/EMCCorp 

Paul Maritz

President and CEO

VMware, Inc.

Keynote Address

Watch the 2009 Keynote

Additional Information 

Customer Showcase

Fundamentals

Demo

Best Practices

Product Showcase

Tech Deep dives

Tech Trends

Attend Free Webinars on

http://www.emc.com/events/ondemand-events.esp

www.youtube.com/PointBB

www.youtube.com/EMCCorp