split path storage virtualization with intelligent switches€¦ · appears to be a one (or more)...
TRANSCRIPT
Split Path Storage Virtualization Split Path Storage Virtualization with Intelligent Switcheswith Intelligent Switches
Yuval ZoharProduct Manager
Virtualization Virtualization -- DefinitionDefinition
Virtualization is the pooling of physical storage from multiple network storage devices into what
appears to be a one (or more) storage device that is managed from a central console.
��������������� ��
Storage Virtualization over SANStorage Virtualization over SAN
How Virtualization WorksHow Virtualization Works
Pool 1
Pool 2Pool 3
Pool 1
Pool 2Pool 3
How Virtualization WorksHow Virtualization Works
Host Based Storage ServicesHost Based Storage Services
• LUN allocation – low flexibility, non-efficient usage of capacity
• Distributed management
Management
Storage Services
Array Based Storage ServicesArray Based Storage Services
• Homogenous ������� / product– Functions and Services– Management
• “Single-threaded”services
Management
Storage Services
����
������
In the Data PathIn the Data Path
• Key Advantages– Secured solution
• Key Drawbacks– “Single Threaded”– SAN bottleneck– Cost of scalability– Cost of availability
Management
Storage Services
Split Path Split Path –– Host Agent SolutionHost Agent Solution
• “multi-threaded”• Distributed data
streams– Highly scalable– Highly available – Low cost
Management
Storage Services
��������
��������
Intelligent Switch Intelligent Switch -- GeneralGeneral
• Routes SCSI commands based on addresses mapping (as opposed to switching based on physical addresses)
• Two configurations:– Independent component connected to the fabric switch– Switch and router in the same box
• Usually hardware solution to achieve close to “wire speed” solution.
Intelligent Switch Intelligent Switch -- OperationalOperational
• iSwitch is a SCSI target that exposes virtual LUNs to the hosts.
• Every I/O to a virtual LUN is routed to a physical LUN
• Routing is done based on dynamic (changeable) data.
• Exceptions are handled by software
Split Path Split Path –– Intelligent Switch SolutionIntelligent Switch Solution
• multi-processor, multi-threaded
• Distributed data streams– Highly scalable– Highly available – Deployment
Simplicity
Management
Storage Services
��������
��������
Intelligent Switch Architecture advantagesIntelligent Switch Architecture advantages
• No SAN Bottlenecks:– More iSwitches can be added as required
– “Wire speed” response time
• Central management – Done by a different box that
handles only metadata
• Increased security – Front-end and back-end zones. No
direct from hosts to storage
• Reduce management conflicts - storage vs. server
teams
• Meets the market trend
Intelligent Switch vendorsIntelligent Switch vendors
Architecture (SVM with Architecture (SVM with AcceleraAccelera NSS)NSS)
SVM F-AgentSVM Agent running on Accelera
SVMMetadata Server