Storage has mostly been an individually managed entity under server and networking virtualization layers. Today, there is a growing demand for this to change into storage virtualization platforms that act like and can be managed like a server virtualization layer. This presentation will look at the storage requirements that cloud service providers have today and what they can do to create a secure and flexible multi-tenant storage infrastructure.

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Storage Multi-Tenancy For
Cloud Service Providers
Felix Xavier, Founder & CTO
CloudByte

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The Cloud Opportunity…
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Cloud Service Providers should be able to:
 Host performance-sensitive enterprise applications from a shared infrastructure
 Scale to 1000s of applications and meet their dynamic performance demands

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… Demands Multi-tenancy
Across the Stack:
Application
Server
Network
Storage
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Multi-Tenancy Evolution
First to be multi-tenant:
Application layer
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Multi-Tenancy Evolution
Application multi-tenancy
SaaS
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Multi-Tenancy Evolution
SaaS
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Multi-Tenancy Evolution
Next to be multi-tenant:
Network
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Multi-Tenancy Evolution
Network multi-tenancy
VLAN
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Multi-Tenancy Evolution
The Big Bang
Server Multi-Tenancy
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Multi-Tenancy Evolution
Server
Virtualization
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Multi-Tenancy in Storage?
Storage Multi-Tenancy
The final layer left
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Multi-Tenancy
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VM
VLAN
Virtual
Stor
Abstracts
Abstracts
Abstracts
• CPU
• RAM
• Operating System
• Storage and networking capabilities
• CPU
• RAM
• Operating System
• Storage and networking capabilities
• Number of ports
• Traffic shaping (QoS)
• Number of ports
• Traffic shaping (QoS)
• IOPS
• Throughput
• Latency
• IOPS
• Throughput
• Latency

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Required Multi-Tenant Stack
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VM
1
VM
2
VM
3
VM
4
VLAN 1 VLAN 2 VLAN 3 VLAN 4
Virtual
Stor
1
Virtual
Stor
2
Virtual
Stor
3
Virtual
Stor
4
APP 1 APP 2 APP 3 APP 4
Storage
Multi-tenancy?

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So, why can’t storage be shared?
Endpoints within legacy shared storage can be defined only
in terms of capacity and not performance
Storage endpoints cannot be configured in terms of IOPS, throughput, latency
This is due to the monolithic nature of the legacy storage controllers
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Requirements of
Multi-Tenant Storage
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APP 1 APP 2 APP 3 APP 4
Shared Storage Platform

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Requirements of
Multi-Tenant Storage
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APP 1 APP 2 APP 3 APP 4
Shared Storage Platform
Security and Isolation

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Requirements of
Multi-Tenant Storage
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APP 1 APP 2 APP 3 APP 4
Shared Storage Platform
Performance Guarantee: IOPS, throughput, latency
300 MBps
1100 IOPS
500 MBps
2000 IOPS
5000 IOPS
<4ms latency
10K IOPS

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Requirements of
Multi-Tenant Storage
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APP 1 APP 2 APP 3 APP 4
Shared Storage Platform
Delegated administration, backup and management
Synchronous
Backup
Backup
every minute
Backup
every hour
Backup
weekly
Additional needs:
•How to handle peak periods, cyclical or variable (daily) workload changes?
•Timeframe to respond to changes in application workload demand profile?

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Multi-Tenant Storage
Controller Architecture
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Applications Contending for
Shared Storage Resources
Applications with
Dedicated Storage Resources

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Thank you!
Q&A
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