Join us for a live webcast and hear Hu Yoshida, Chief Technology Officer of Hitachi Data Systems, discuss the real world criteria for making an effective decision when evaluating flash storage. With all the noise in the market it can be difficult to separate fact from fiction in order to evaluate the performance, efficiency and economic trade-offs for flash storage. Specifically, you’ll learn how to determine if flash storage will help you: Actually achieve the performance you need as you compare technology options. Realize efficiency gains that extend beyond the promise of flash performance. Make the economic case for real-world business decisions before taking the leap.

1. FLASH FOR THE REAL WORLD
SEPARATE HYPE
FROM REALITY

2. WEBTECH EDUCATIONAL SERIES
FLASH FOR THE REAL WORLD – SEPARATE HYPE FROM REALITY
Join us for a live webcast and hear Hu Yoshida, chief technology officer of Hitachi Data
Systems, discuss the real-world criteria for making an effective decision when evaluating
flash storage. With all the noise in the market it can be difficult to separate fact from
fiction in order to evaluate the performance, efficiency, and economic trade-offs for flash
storage
Specifically, you’ll learn how to determine if flash storage will help you
 Actually achieve the performance you need as you compare technology options
 Realize efficiency gains that extend beyond the promise of flash performance
 Make the economic case for real-world business decisions before taking the leap
After attending this webcast, you will be able to
 Understand the important differences between commodity flash storage and storage
designed for flash
 Maximize the return on your flash storage to exceed the abilities of flash appliances
 Identify potential efficiencies, beyond performance improvement, that your company
might gain by employing flash storage

3. UPCOMING WEBTECHS
 Maximize IT WebTechs
‒ Hitachi Unified Storage and Hitachi NAS Platform Performance Optimization
with Flash Acceleration, August 14, 9 a.m. PT, 12 p.m. (noon) ET
‒ Comprehensive and Simplified Management for VMware vSphere
Environments – Now, Even Better!, September 11, 9 a.m. PT, 12 p.m. (noon) ET
‒ Easily Deploy Microsoft® Private Cloud and Microsoft SQL Server® 2012 Data
Warehouse on Hitachi Converged Solutions, Sept 25, 9 a.m. PT, 12 p.m. (noon)
ET
Check www.hds.com/webtech for
 Links to the recording, the presentation, and Q&A (available next week)
 Schedule and registration for upcoming WebTech sessions
 Questions will be posted in the HDS Community:

http://community.hds.com/groups/webtech

4. FLASH FOR THE REAL WORLD
SEPARATE HYPE
FROM REALITY

5. HYPE OR REALITY?
 Flash storage is nonvolatile
 Flash can replace DRAM for cache and memory
 Flash SSDs are built for enterprise storage
 Flash storage is 10 times more expensive than HDD
 Flash storage will replace hard disk drives
 All-flash arrays will outperform hybrid flash arrays

6. STORAGE MEDIA TECHNOLOGY TRENDS




Hard disk technology is slowing down – end of 50-year trend
MLC flash will approach price of high-performance hard drives
Optical disk and tape continue price trend
A hybrid pool of flash and hard drives will be required to reduce cost
and increase performance
($/GB)
100.00
ReRAM
PRAM
SLC Flash SSD
10.00
MLCFlash SSD
1.00
SAS HDD
0.10
Random Read Performance
70K IOPS
SAS HDD 0.3K IOPS
0.01 MLC SSD
0.001
CY05
Tape
Optical Disk
CY10
CY15
CY20
Storage Media Bit Cost Forecast
MLC: Multi-level cell, SLC: Single-level cell, SAS: Serial attached SCSI, PRAM: Phase change RAM, ReRAM: Resistance
RAM

7. FLASH NAND TECHNOLOGY
 Pages can only be written to formatted
blocks
Thin Oxide
Insulation Layer
Drain
 When pages are updated, old pages are
marked invalid
 Pages have to be refreshed periodically
since electrons are leaking with every read
and over time
Source
Floating Gate
N＋
 Formatting is only done on a block level
 This limitation causes write amplification
and takes processor cycles for garbage
collection
Control Gate
Substrate
Block A
Page 0
Invalid
Block B
Page 1
Invalid
Page 2
LBA:10
Page 1
Invalid
Page 2
LBA:10
→Invalid
Block A
Page 0
Invalid
Page 0
Free
Page 1
Free
Page 2
Free
Page 1
Free
Page 2
Free
Page 1
Free
Page 2
Free
Block B
Block A
Page 0
Free
N＋
Page 0
LBA:10
Block B
Page 1
Free
Page 2
Free
Page 0
LBA:10
Every write degrades the insulation layer until the cell
is no longer usable

8. COMPARISON OF STORAGE TECHNOLOGIES
Technology
Read
Write
Endurance
Cycle
Nonvolatile
DRAM
<10ns
<10ns
1016
No
SLC Flash
25μs
200μs/1.5ms
(Program/Erase)
105
Yes*
MLC Flash
200μs
440μs/2.5ms
(Program/Erase)
103
Yes*
15K HDD
5.7ms
5.7ms
1018
Yes
2013 IEEE NAND Flash SIM: M. Jung et al
* Nonvolatility degrades with writes, formats, reads, and time

9. SSD CONTROLLERS ARE NOT DESIGNED
FOR ENTERPRISE STORAGE
SSD DESIGNED FOR PCS IS OPTIMIZED FOR MANUFACTURING
COST, NOT PERFORMANCE




Units (M)
Single core
Limited memory
Mapping table resident in flash
Bandwidth limits capacity
‒ 400GB modules
 “Write Cliff” − I/O performance
is blocked during garbage
collection
 Limited system integration
options
 No encryption − no shredding
200
160
120
80
Entry-Level PC
Mainstream PC
Enterprise Server
Enterprise Storage
Industrial
2012
40
0
2011
2012
2013
2014
2015
Source: Gartner, June 2012
“Forecast Analysis: NAND, Worldwide, 20112016, 2Q12 Update”
2016

10. FLASH NEEDS TO BE BUILT FROM THE
GROUND UP FOR ENTERPRISE STORAGE
CONSUMER
DESKTOP AND LAPTOP
DATA CENTER
ENTERPRISE SERVER AND STORAGE
LOWEST UNIT COST
HIGHEST PERFORMANCE AND AVAILABILITY

11. EMBEDDED CONTROLLER: A HIGH-PERFORMANCE
FLASH TRANSLATION LAYER
HIGHLY PARALLEL
 Eight lanes of PCIe
PCIe
 PCIe root complex
 Multicore processor
X8 PCIe PHYs
PCIe Root Complex
 Integrated DDR-3 interface
 Integrated flash controller
logic supports 32 paths to
the flash array
 Uses 128 flash memory
chips
 Housekeeping is taken out
of the I/O path – no write
cliff
Core
Core
DDR3
To/From DDR
Core
Core
Misc..
Interfaces
UART, UI2C, E
thernet
X16
Flash Controllers
X32
Flash PHYs
Flash
Memory
interface

12. EMBEDDED CONTROLLER
INLINE COMPRESSION FEATURE
 Compress in real time any data stream of “0” or “1” by up to 94%
 Perform inline encoding of any data chunk of “0” or “1”
‒ Chunk size: 128KB
 Algorithm remaps data with a pointer and saves “LA/LRC (data check code)”
VSP Formatted Data
Written on Flash
Chunk Size (128KB)
Data:
Data:
All “1”
All “0”
LA/
LA/
LRC
LRC
Data:
Data:
All “1”
All “0”
LA/
LRC
Compression Data (8KB)
Data:
“1”
All “0”
LA/
LRC
Inline Write Compression
Ptn: LA/ LA/
Ptn: LA/ LA/
“1” LRC LRC
“0” LRC LRC
LA/
LA/
LRC
LRC

13. EMBEDDED CONTROLLER
FORMATTING COMPARISON WITH SSD
Format Execution Time (22.4TB)
280 min.
60 min.
SSD
400GB x 8 (7D+1P)
PARITY GROUP
Hitachi Accelerated
Flash (HAF)
1.6TB x 2 (7D+1P)
PARITY GROUP

14. EMBEDDED CONTROLLER
ERROR CHECK AND CORRECTION (ECC)
 Hitachi Accelerated Flash ECC is added to each LA/LRC, resulting in
the ability to correct 48b/1.4KB of data
 Increasing ECC size extends the ability to read data as the cells leak
electrons, and reduces the need to rewrite pages
Host data
Generated
Data by VSP
512
8
LA/LRC
Logical
partitioning
1384
1388
1388
1388
1388
1384
A unit of data
That generates
ECC
Flash
data
format
1384
Page#
1388
1388
1388
1388
ECC（Size Varies by Flash Chip Type, 52-84 Bytes）
1384
CRC

15. HAF RANDOM PERFORMANCE AND BIT COST
ADVANTAGES COMPARED TO MLC SSD
8K IOPS (64/36 R/W Ratio) Per Drive
60,000
55,000
55,000
50,000
40,000
30,000
20,000
14,000
14,000
11,000
11,000
10,000
196
196
141
141
78
600GB
HDD 10K
900GB
HDD 10K
3TB HDD
7.2K
0
200GB SLC 400GB SLC
SSD
SSD
200GB
MLC SSD
400GB
MLC SSD
146GB Tomahawk Tomahawk
300GB
HAF
HAF
HDD 15K
1.6TB
3.2TB
HDD 15K
NORMALIZED BIT PRICE COMPARED TOvs 146GB 15K
Relative Bit Cost 146GB 15K RPM HDD AND MLC SSD
9.00
8.11
8.06
8.00
7.00
6.38
6.00
6.00
5.00
4.00
4.00
3.60
3.00
2.00
1.00
1.00
0.89
0.28
0.28
0.10
600GB
HDD 10K
900GB
HDD 10K
3TB HDD
7.2K
0.00
200GB SLC 400GB SLC
SSD
SSD
200GB
MLC SSD
400GB
MLC SSD
146GB Tomahawk Tomahawk
300GB
HAF
HAF
HDD 15K
1.6TB
3.2TB
HDD 15K

16. HITACHI ACCELERATED FLASH
POWER-PER-TERABYTE ADVANTAGES
Power per TB (incl. Drive and Chassis) (Watts)
400
342
350
300
250
39%
less
power
200
150
100
50
167
77
60
30
51
45
23
28
19
14
0
200GB SLC 400GB SLC 200GB
SSD
SSD
MLC SSD
400GB
MLC SSD
146GB HAFS FMD HAFS FMD 300GB
HDD 15K
1.6TB
3.2TB
HDD 15K
600GB
HDD 10K
900GB
HDD 10K
3TB HDD
7.2K

17. HITACHI ACCELERATED FLASH STORAGE
4X THE CAPACITY OF SOLID STATE DRIVES, 2X THE DENSITY PER RACK UNIT
1.6TB
19.2TB in 2U
4X
2X
400GB
9.6TB in 2U

18. STORAGE ARRAY − FLASH ACCELERATION
OPTIMIZE HITACHI UNIFIED STORAGE VM (HUS VM) AND HITACHI VIRTUAL
STORAGE PLATFORM (VSP) SYSTEM SOFTWARE TO EXPLOIT FLASH
 30+ fundamental software changes to turbocharge performance with flash
Hitachi Storage
‒ New “express” I/O processing
‒ New cache slot allocation method
‒ Reduced ucode overhead and path length
 Significant performance impacts
‒ Up to 65% reduction in response time
‒ Up to 4x random I/O scalability
 Nondisruptive installation and transparent to
current applications
HUS VM and
VSP Optimized
for Flash
Today

19. VSP WITH HAF COMPARED TO EQUIVALENTPERFORMANCE 15K HDD VSP CONFIGURATION
Greater productivity: Sustain up
to 223% more transactions
Controller
Controller
Increased efficiency and
application performance: Up to
88% reduction in application
response times, allowing support
for more users and applications
Lower environmental cost: Up to
98% reduction in drive footprint
Hitachi
Accelerated Flash
storage and VSP
flash acceleration
Lower price/performance: Up to
65% lower price/performance
Flash
Chassis
Controller
www.storageperformance.org/results/benc
hmark_results_spc1#a00135

20. SCALE TO MANAGE DATA GROWTH
STORAGE ARRAY CONTROLLER PROVIDES SCALABILITY
 Global cache internal switch
architecture for scale-up
performance
 Dynamically tier virtualized storage
for application data growth
 Grow block volumes and file systems
dynamically and without concern for
size
 Easily provision block and file
capacity for VMs
 Select HAF and/or hard drive options
to balance capacity or performance
SCALE TO
EXTERNAL
STORAGE
HIGHER
DENSITY HAF
and HDD
PROVIDE
LARGER FILE
SPACE
MANAGE
LARGER
POOLS

21. STORAGE CONTROLLER PROVIDES
DYNAMIC TIERING
POOL A
 Dynamic tiering
-
Automates the movement of
pages in a volume between
tiers of storage
EFD/Flash
FLASH
Last Referenced
SAS SAS
Fast
 Flash
-
Provides performance for the
hot pages
 Hard drive
-
Provides capacity for lessactive pages
 Optimizes
performance, capacity, and
cost with automation
Last Referenced
NL SAS

22. MIGRATE DATA WITH LESS EFFORT
DATA MOBILITY
90%
Less
Refresh
Effort




Lowest-risk data migration
Speed technology refresh
Minimize outage window
Eliminate application downtime

23. PROTECT APPLICATION DATA
LOCAL DATA REPLICATION FOR INTERNAL USE
 Data protection independent of
operating
system, application, or device
 Application aware for
Microsoft® Exchange and
Microsoft SQL Server® for
complete data recovery
 High-speed object-based
replication over wide area
network
 Most space-efficient writable
snapshots available

24. SHARE ANY DATA ANY TIME ANYWHERE
REMOTE DATA REPLICATION
 Move data from any storage
system across any distance
 Automate recovery to resume
business in minutes, not
hours or days
 Deploy locally and remotely
for disaster recovery with no
interruption in service
 Replicate data from Hitachi or
other virtualized storage

25. IMPROVE QUALITY OF SERVICE
DESIGNED FOR RESILIENCE AND THE HIGHEST AVAILABILITY
100%
Data
Availability
Guarantee
Hitachi HiTrack
Monitor Service
Online Service and
Microcode Updates
 100% data availability
 Ensure uninterrupted
access to data
 Automatic diagnostics
with call-home service
 Update without service
interruption
Mirrored
Write Cache
Active–Active
Clustered File
Services
Shared Resource
Block Controllers

26. HITACHI VSP ACCELERATED FLASH
STORAGE STRUCTURE
UP TO 4 FLASH CHASSIS PER VSP – MORE THAN 600TB OF FLASH
Drive
chassis
Hitachi
Flash Controller
Flash
chassis
Controller

27. HITACHI ACCELERATED FLASH STORAGE
FOR HITACHI UNIFIED STORAGE VM
1.6TB per flash module
12 modules per 2U enclosure – 19.2TB
Up to 8 flash enclosures per system –
maximum 154TB
5U controller with 16 cores, 256 GB cache
and 36 FC paths

28. FLASH ECONOMICS
Hitachi
Accelerated
Flash with VSP or
HUS VM
3 x Better $/IO
Than Solid State
Drives
7 x Better $/IO
Than Hard Disk
Drives
500,000 IOPS
500,000 IOPS
240,000 IOPS
8 drives
80 drives
768 drives
9U
13U
69U
$1 per I/O
$3 per I/O
$7 per I/O

29. COMPETITIVE PRICE/PERFORMANCE
HUS VM ALL FLASH VS LEADING ALL-FLASH ARRAY
500,000 IOPS
< 1ms response
$1 per I/O

30. HUS VM FLASH VS. COMPETITIVE
ALL-FLASH ARRAYS
1,000,000
HYBRID ARRAYS
IBM®
XIV
HP
3PAR
EMC
VNX
ALL-FLASH ARRAYS
HUS
VM
Violin
Memory
IBM
Pure
EMC
Flash Storage XtremIO
System
RANDOM IOPS

31. COMPETITIVE FLASH STORAGE FEATURES
ONLY HITACHI DATA SYSTEMS DELIVERS
FULL-FEATURED UNIFIED STORAGE
WITH FLASH ACCELERATION AND
TIERING ACROSS INTERNAL
AND EXTERNAL STORAGE
ACCELERATED HDS
FLASH
EXTERNAL
VIRTUALIZATION
ONLY HITACHI DATA SYSTEMS
DELIVERS DURABLE HIGHPERFORMANCE FLASH
MODULES DESIGNED
FOR ENTERPRISE
STORAGE
THIN PROVISIONING
AUTOMATED TIERING
HDS, EMC, IBM®, NE
TAPP
HDS, EMC, HP, IBM
REMOTE AND LOCAL
REPLICATION
HDS, EMC, HP, IBM, NETA
P
UNIFIED
HDS, EMC, HP, IBM, NETA
P, NIMBUS
FLASH STORAGE
HDS, EMC, HP, IBM, NETA
P, VIOLIN,
NIMBUS, PURE, ETC.

32. HUS VM ALL-FLASH STORAGE ARRAY
145 PATENTS FILED FOR HAF AND FLASH ACCELERATION
1,000,000
Up to 154TB
IOPS, <1ms
flash storage
response
Unified and
virtualized
capacity
Best storage
optimization
for flash
Best flash
form factor
and
durability
More flexible
than all flash
systems
Hitachi flash
acceleration
software
Hitachi
Accelerated
Flash
Hitachi
Command
Suite

33. HYPE OR REALITY?
 Flash storage is nonvolatile
 Flash can replace DRAM for cache and memory
 Flash SSDs are built for enterprise storage
 Flash storage is 10 times more expensive than hard
disk drives
 Flash storage will replace hard disk drives
 All-flash arrays will outperform hybrid flash arrays

34. QUESTIONS AND
DISCUSSION
Questions will be posted to:
http://community.hds.com/groups/webtech

35. UPCOMING WEBTECHS
 Maximize IT WebTechs
‒ Hitachi Unified Storage and Hitachi NAS Platform Performance Optimization
with Flash Acceleration, August 14, 9 a.m. PT, 12 p.m. (noon) ET
‒ Comprehensive and Simplified Management for VMware vSphere
Environments – Now, Even Better!, September 11, 9 a.m. PT, 12 p.m. (noon) ET
‒ Easily Deploy Microsoft® Private Cloud and Microsoft SQL Server® 2012 Data
Warehouse on Hitachi Converged Solutions, Sept 25, 9 a.m. PT, 12 p.m. (noon)
ET
Check www.hds.com/webtech for
 Links to the recording, the presentation, and Q&A (available next week)
 Schedule and registration for upcoming WebTech sessions
 Questions will be posted in the HDS Community:

http://community.hds.com/groups/webtech

36. THANK YOU