SAN & NAS Virtualization

Yakov CohenRegional Technology Consultant, AMESAEMC

EMC Invista

Network-based Storage Virtualization (SAN)

The Network is the Right Place for Virtualization

State/cache introduces data-integrity risk Increased I/O latencyLimited fabric portsLimited performance

Network VirtualizationSplit-path

Appliance and Controller Virtualization

In-band

CPC

DPC DPC DPC DPC

No state/no cache ensures data integrityI/O at wire speedFull-fabric bandwidthScalable performance

Invista’s Advanced Software Functionality

Dynamic Volume MobilityMove and change primary volumes while application remains online

Network-based Volume Management

Pool storage and manage volumes at the network level

Heterogeneous Point-in-Time Copies

Create local copies of data for testing and repurposing across multiple types of storage

Physical storage

Dynamic Volume Mobility

Provide nondisruptive movement of volumes across heterogeneous storage

Reduce planned application downtime

Reduce migration costsPerform lease rollovers or technology refreshes fasterReduce lease-overlap time

Increase ability to meet service levels

Match storage-capacity allocation to application-performance requirementsIntegral component of an information lifecycle management strategy

Invista SoftwareApplications

SAN

DataData

InvistaControl Path

ClusterData PathController

Data PathController

Virtual volume Activevolume

Network-based Volume Management

Simplify volume presentation and management

Create, delete, and change storage volumesProvides front-end LUN Masking and mapping of storage volume to hosts

Centralize management and controlSingle Invista console to manage virtual volumes, clones, and mobility jobs

Reduce management complexity of a heterogeneous storage

Single management interface to allocate and reallocate storage resources

Applications

Virtual volumes

Invista Software

Physical storage

Heterogeneous Point-in-Time Copies

Create point-in-time copiesSource and clone can be on different, heterogeneous storage arrays

Enable replication across heterogeneous storage

Leverage existing storage investmentsReduce replication-storage capacity and management costs

Maximize replication benefits to support service levels

Backup and recoveryTesting, development, and trainingParallel processing, reporting, and queries

Invista SoftwareApplications

SAN

DataClone Clone Clone

InvistaControl Path

ClusterData PathController

Data PathController

Virtual volume Activevolume

Physical storage

EMC Rainfinity Global File Virtualization

Uneven File Server Utilization: Before

Current NAS Deployment

Celerra NS40 for shared documents

Old Filer used for UNIX data

Windows server holds Home Directories

Issues

Uneven and poor utilization

Moving file systems requires changes to clients

Poor performance on over-utilized file server

Service-level agreement does not allow an offline migration

Windowsclients

Network

Filer 0:50%

utilized

USRHome

PUBServer 5:80%

utilized

UNIXclients

NFS

DM-1:20% utilized

DM-2:30% utilized

DM-3:15% utilized

CIFS

Client View“Server-5\Home1”“Server-5\Home2”“Filer-0\PUB”“Filer-0\USR”“DM-1\Docs”“DM-1\Docs”“DM-1\Docs”

Use Case

Ppts

Docs

Mktg

NS40

NS40

Uneven File Server Utilization: After

EMC Rainfinity Global File Virtualization

Global Namespace Management

Eliminated aging Filer andre-deployed Windows server

Benefits

Nondisruptive migrations andfile system movement

Simplified client access

Improved storage utilization

Accelerated storage consolidation

Out-of band architecture does not compromise performance

Windowsclients

Network

Home

Server 5:80%

utilized

UNIXclients

NFS

DM-1:40% utilized

DM-2:40% utilized

DM-3:25% utilized

CIFS

Client View“Home Directory”

“UNIX PUB”“UNIX USR”“Documents”“Marketing”“Presentations”

RainfinityGlobal File

Virtualization

DATA MIGRATION

Use Case

Docs

USR

Mktg

PUB

Ppts

Rainfinity Global File Virtualization

Makes NAS environments simple to manage

Makes it easier to move information and resources without disruption

Networked Storage Virtualization for NAS and File Servers

Rainfinity Global File

Virtualization

Global NamespaceIP network

NAS devices/platforms

NAS storage pool

File serversEMC

NetApp

Rainfinity is Out-of-Band

File

Collecting Statistical Data on Capacity, Performance,

Storage Tiers

Source Destination

Rainfinity Global File Virtualization

Rainfinity is In-Band

File

Transaction is submitted and enters

the

Executing Phase

Rainfinity begins to “copy” data from

source to DestinationSource Destination

Rainfinity Global File Virtualization

Rainfinity is In-Band

File

NFS

After execution Rainfinity goes into

the

Re-Directing PhaseRequests from the

client to the Sourceare

“Re-Directed”to the Destination

Rainfinity Global File Virtualization

Source Destination

Rainfinity is In-Band

File

Requests from the client to the Source

are “2-Way Sync’d”

to the Destination

CIFS

After execution Rainfinity goes into

the

2-Way Syncing Phase

Source Destination

Rainfinity Global File Virtualization

Rainfinity Global File Virtualization Usage Examples

16

Nondisruptive Movement of Production Data Across NAS

File server consolidationsLease rolloverTechnology refreshesData center relocations/additions Data placement in support of information

lifecycle management strategiesService-level performance optimizationSynchronous replicationFile system archivingGlobal Namespace rollouts…All without downtime

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