Flash storage is the “go to” option in the modern data center to overcome storage I/O bottlenecks. The problem has been how to get full performance for the flash investment. The zero latent nature of flash exposes bottlenecks throughout the I/O chain. In this webinar you will learn: • How latency is introduced by each flash interconnect • What the performance ramifications are of this latency • How to reach the full performance potential of flash based storage by leveraging the memory bus • How memory bus based flash changes the game for how flash can be utilized in the data center

1. Flash Roadblock: Latency!
How Storage Interconnects are Slowing Flash Storage
and How to reach the Final Performance Frontier
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2. Logistics
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3. Today’s Agenda
● Company Backgrounds
● What is Latency, Throughput and Bandwidth?
● Flash Road Blocks - What Slows Flash
Down?
● In Search of a Zero Latent Architecture
● The Final Frontier for Flash Performance

4. Background
● Analyst firm focused storage,
cloud and virtualization
● Knowledge of these market is
gained through product testing,
implementations and
interactions with users and
suppliers
● The results of this research
can be found in the articles,
videos, webinars, product
analysis and case studies on
our web site:
○ http://storageswiss.com

5. A Global Leader in Flash Storage Solutions
Rankings
Trailing 4 Qtr Financials*
$6.0B
$3.3B
$0.7B
SanDisk
Client SSD
Used by All
Leading PC
OEMs
Global Operations
Revenue
Net Cash*
R&D Investment
5,300+ Employees†
Qualified at
6 of the Top 7
Leading Retail Brand1
#1 Global
Retail
Revenue
Share
All Leading
Smartphone
& Tablet
Manufacturers
use SanDisk
Server & Storage OEMs
Enterprise SSDs and Storage Software
* Financials as of Q3 ‘13. Net Cash = [Cash + cash equivalents + short-term & long-term marketable securities] less [debt at maturity value] as of the end of Q3 ‘13. Headcount & patents as of Oct ‘13. NPD Estimate, Jan ‘13. 1Estimates of the memory card & USB markets from NPD (Aug ‘13) and GfK Retail and Technology, Jul ‘13.
5

6. What is Latency, Throughput and Bandwidth?
● Latency
● The speed at which the device can
respond to the I/O request
● Throughput
● The speed at which the device can
deliver that response per channel
● Bandwidth
● The number of channels that the
device has available to deliver that
response

7. Flash Roadblocks
● Flash Exposes Architectural
Problems that HDDs Didn’t
● Speed / Bandwidth of the
Connection
● Contention of the Connection
● Efficiency (or inefficiency) of the
Storage Protocol

8. In Search of a Zero Latent Architecture
● High Speed Networks
● 16Gbs Gen 5 Fibre, Infiniband
● Has to traverse storage protocol and
network stack, not private
● Server Side SSD
● Has to traverse storage protocol stack,
not private
● Native PCIe SSD
● No network, no storage but still has to
go through IO HUB, inconsistent latency

9. The Final Frontier in Flash Performance
● Flash on the Memory Bus
● Designed for Memory
● Dedicated to Memory
● Higher Speed than PCIe or
storage network
● Avoids traditional storage
protocol stack
● Result: No Bus Contention, very
consistent latency

10. ULLtraDIMM Solid Foundation
The World’s First Flash Storage Device On The Memory Channel
Memory Channel
Interface
Enterprise Class
Reliability, Endurance
& Support
Cost
Effective
SanDisk Confidential

11. Creating a New Storage Interface
This is DRAM with
battery backup
This is a
SATA DIMM
Flash
Flash
Flash
Flash
Flash
Controller
Controller
DRAM
Flash
Flash
Flash
DRAM
This is DDR3 directly to flash
SanDisk Confidential

12. Utilizing Existing Server Infrastructure
DDR3 Interface & Protocol
Scalable I/O & Capacity
Example: 8-socket server with 64 DIMM slots
 Scalable up to 56 DIMM’s
 Up to 22.4TB capacity
 >8M IOPS in a single server
SanDisk Confidential

13. Scalable I/O Performance, Constant Latency
3200G
1600G
800G
SanDisk Confidential
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14. Benefits to Applications
Financial Services
 Blockdevice
Block device
 Low,predictable
Low, predictable
latency
latency
 FastInteractive
Fast Interactive
Data Analysis
Data Analysis
Database/Cloud
 Blockdevice/
Block device/
memory
memory
extension
extension
 Increase
Increase
Transactions per
Transactions per
Second
Second
 Memcached
Memcached
consolidation
consolidation
Virtualization
 Blockdevice
Block device
 IncreasedVMs per
Increased VMs per
Node
Node
 Fasterresponse
Faster response
times per VM
times per VM
Blade Server
 Blockdevice
Block device
 Utilizesempty
Utilizes empty
DIMM slots
DIMM slots
 Enableshigh
Enables high
density storage
density storage
blades
blades
In Memory Compute
 Memory
Memory
extension
extension
 Reduceresponse
Reduce response
times for analytics
times for analytics
queries
queries
SanDisk Confidential
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15. Virtual Desktop Infrastructure
App
App
App
App
App
App
App
App
App
App
App
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
OS
VMware ESXi
 64GB DRAM
 1.6TB MLC ULLtraDIMM
VMware ESXi
 384GB DRAM
 700GB SLC PCIe
th
1/6th DRAM cost
2x VM’s
200 VMs
100 VMs
SanDisk Confidential

16. Thank you for joining!
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Contact And Resources:
George Crump: gcrump@storageswitzerland.com
www.storage-switzerland.com
A recording of this and our
other webinars is available
on our website (no need to reregister)