1 : © Gear6

Ratcheting Up Global Namespace Performance withCentralized Storage Caching

2 : © Gear6

NAS and SAN Architectures

File System 1

System 3 Space

System 2 Space

System 1 Space

FileSystem 1

FileSystem 2

FileSystem 3

Block-based SAN device File-based NAS device

SAN Architecture NAS Architecture

3 : © Gear6

FileSystem 1

NAS Lends Itself To Client Growth and Sharing

File-based NAS device

Easily add clients with shared file system approach 2 3

Eventually, new NAS devices are required, but they maintain unique file systems and must be managed independently

4 : © Gear6

Global Name Spaces Ease NAS Expansion

File-based NAS devices

Global Name SpaceGlobal Name Space

FileSystem 1

FileSystem 2

FileSystem 3

FileSystem 4

FileSystem 5

FileSystem n

Easily add clients with global namespace approach

Easily add file servers with global namespace approach

5 : © Gear6

Caching and Namespace Performance

LowLatency

IOPS

Throughput

Global Namespace

Disks

Shared NamespaceFile System

Pe

rfo

rman

ce

Capacity

Namespace performance

Memory

Cac

hin

g p

erfo

rman

ce

6 : © Gear6

Walking the Directory TreeGlobal Namespaces Can Add to Performance Concerns

Requestedcontent:dog.file

/quick

/brown

/fox

/jumped

Sample NFS directory lookup

/quick/brown/fox/jumped/over/the/lazy/dog.file

Additional NFS operation

7 : © Gear6

Centralized Storage Caching AcceleratesGlobal Name Spaces

Application Servers

Scalable Caching Appliance

NFS File Systems with Global Namespace

LegendHigh volume operations from cache

Low volume operations to/from filers