Changing the
Economics of Storage:
Flash at the Price of Disk
Neeraj Matiyani
Director
Enterprise Storage Solutions
Solutions Road Show 2014
March 2014 | India
What characterizes your workloads?
Traditional “one size fits all” data storage strategy is inefficient
Performance
• Hot data that needs to be retrieved extremely
fast without latency
• IOPS vs. throughput
Access patterns and frequency
• Data accessed frequently vs. cold, rarely
accessed data
• Heavily read vs heavily written data
• Data optimized for tiering vs caching
I/O patterns
• Read and write percentages
• Transfer sizes
• Sustained vs. bursty I/O patterns
Business value
• Data that is highly valuable to the business
and can be used for deriving business
intelligence, financial analysis, etc.
Each type of data needs to be treated differently to align the application performance
with capacity and cost requirements
2
Solutions Road Show 2014
March 2014 | India
Flash adoption is accelerating
Pent-up demand for improving application performance at the right price point
Flash prices falling faster than HDDs but still
considerably higher than 15K HDDs
New form factors: PCIe cards, appliances, shared
storage
$/GB
15K HDD
Flash SSD
7.2K HDD
Multi-core processors drive up processor utilization
and demand for more I/O per server
3
Virtualization is increasing the demand for random
I/O with the “mixer effect”
Solutions Road Show 2014
March 2014 | India
Flash storage can be deployed at various layers to
accelerate application performance
Client
Network
Server-based cache (Tier-0)
•
Dell
Fluid Cache
for DAS on
PowerEdge
•
Storage
Network
Dell
Compellent
All-Flash or
Hybrid-Flash
Array
Flash drives placed directly on high speed PCI bus in
application servers
Caching software enables server to leverage flash
storage as an extension of memory cache
SSD tiering in shared storage
•
A few SSDs can be added to the array to dramatically
increase performance for targeted workloads
OR
•
An entire storage tier can be deployed on SSDs so that
complete volumes and datasets can be fit in flash
COMING SOON: Fluid Cache for SAN
•
4
Benefits of Fluid Cache extended to the entire SAN for
maximum performance and reliability
Solutions Road Show 2014
March 2014 | India
Best use of flash storage: transactional, IOPSintensive workloads
Indexing
Data
OLTP
Warehousing
1
3
2
VDI
Random
Sequential
Read-intensive
5
Write-intensive
Indexing
Data Warehousing
• Maintains indexes to
allow quicker access to
data
• Runs on databases to
accelerate locating a
block of data in queries
• Stored data used to
create reports or derive
Business Intelligence
• Used for data mining,
analysis, hypothesis
testing, modeling
OLTP
VDI
• Manage transactionoriented applications,
i.e. retail, banking
• Business can be hurt if
data not accessible,slow
• During peak usage,
customer experience
can be effected
• Hosting desktop OS
within a VM on a
centralized server
• Facilitate a quick
retrieval of gold images
• Boot storms, write
allocations and latency
are issues
Solutions Road Show 2014
March 2014 | India
All Dell Primary Storage Solutions offer Flash
Workload-optimized solutions for any size enterprise
Compellent
EqualLogic
PowerVault
Dell Software
Converged
infrastructures
Cloud
deployments
High-performance
storage
Easy-to-use
virtualized storage
Affordable, entry
level storage
Data management
and protection
Maximize efficiency, drive results faster and boost resiliency
6
I/O intensive
applications
Vertical fileintensive apps
Solutions Road Show 2014
March 2014 | India
Lets look at
Dell Compellent
first
7
Solutions Road Show 2014
March 2014 | India
SSDs have different characteristics
Workload
Mainstream Applications
Any usage
Mostly Read
90/10 R/W Mix
Capacity
400 GB
1.6 TB
Write endurance
Great
Moderate
Full-drive writes/day
30
3
Random read perf.
Great
Great
Write performance
Great
Moderate
Relative costs
4x
1x
Tiering flash across multiple SSD types enables
Compellent to disrupt the flash cost model with a
superior $/GB ratio.
8
Tier 1
Read-Intensive (RI)
MLC SSDs
WI SLC
SSDs
Tier 2
Write-Intensive (WI)
SLC SSDs
RI MLC
SSDs
Tier 3
Compellent is the first storage solution to tier sub-LUN data across SSDs
HDDs
Compellent Hybrid-Flash Array
Solutions Road Show 2014
March 2014 | India
Secret sauce behind the flash optimized
Compellent: tiering with Data progression
Flash-optimized Data
Progression leverages the
endurance of write-intensive
SSDs and the value of readintensive SSDs.
Tier 1
$$$
RAID 10
Write Intensive
Enterprise SAS SSD
Tier 2
$$
RAID 5
RAID 5
Read Optimized
Enterprise SAS SSD
Tier 3
$
RAID 5
RAID 6
RAID 6
7.2K SAS HDDs
Advanced software tiering seamlessly manages data
• Incoming writes are written to the write intensive SSDs for fast access
• Read intensive data is automatically moved to less expensive read optimized SSDs keeping Tier 1
free for new incoming writes
• Cold and non-performance data is migrated to lower tier, less expensive rotating disk
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Solutions Road Show 2014
March 2014 | India
New economies of flash with Compellent :
1/5th the price vs. competitive all-flash solutions
Compellent
Other Vendors
With Flash Tiering
Single SSD type (SLC or eMLC) only
Write Intensive (SLC)
Read Intensive (MLC)
Hardware
80%
Lower costs
10
Higher
costs
Power / Cooling
Software
Support
Solutions Road Show 2014
March 2014 | India
Compellent extends the economic value with a
feature-rich storage platform
Optimal $/GB & $/IO
Tiering
Scalability
Lower TCO by balancing
performance and capacity needs
in a single platform
Automatically move data between
Flash tiers and HDD tiers
Scale to meet storage
requirements with either SSD
or HDD
Unified Storage
Management
Enterprise Class Support
Manage multi tiered storage
solution with a single pane
of glass
class support
$
Replication
Replicate business critical
data between disparate
storage systems
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Leverage best of breed enterprise
Solutions Road Show 2014
March 2014 | India
Dell EqualLogic
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Solutions Road Show 2014
March 2014 | India
Dell EqualLogic PS6200S is All Flash.
& PS6200XS is Hybrid Flash
PS-M4110 blade
array
One streamlined
data center
Ideal for general
purpose smallmedium consolidated
loads
• Converged storage
servers and
networking
• Highly virtualized
• Highly scalable
• 10GbE
• Ease of management
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PS4100/4110
PS6100/6110
Entry-level
advanced
functionality
Business-responsive
performance
Ideal for smaller SAN
deployments
• Remote office
• Pay as you grow
scalability
• Designed for
virtualization
• 10GbE capability
Ideal for VDI
deployments
• Hybrid SAN
• Highly virtualized
• Scale capacity
& performance
• 10GbE capability
• Self-optimized
performance
• Options for
intelligent tiering
PS6500/6510
Powerful, virtual.
data-center ready
Ideal for heavy
sequential
workloads
• 10GbE capability
• 2.5x bandwidth
per array
• Scales up to 2.3PB
FS7600/7610
NAS unified storage
Ideal for file & block
environments
• Flexible pool of scaleout file & block
• Massive share
capacities for flexibility
• Single interface to
manage file and block
data
• 1GbE or 10GbE SAN
and client networks
• Includes file-level
snapshots and
replication
Solutions Road Show 2014
March 2014 | India
Automatic load balancing
EqualLogic SAN
SSD
SAS or NL-SAS
Array 1
Array 2
Storage Pool
Latency: 0.1s
Latency: 0.4s
Maximize performance by seamlessly assigning data across all available resources
• Make the most of network ports and
disk utilization
• Dynamically detect and correct
latency issues
• Automatically adjust to workloads as
I/O changes
• Purchase storage for the predictable
vs. peak workloads
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• Align hot and cold data within an
array and across arrays (based on
dynamic workloads)
• Improve performance and minimize
latency
Solutions Road Show 2014
March 2014 | India
Thank You
Solutions Road Show 2013
March 2014 | India