Changing the Economics of Storage: Flash at the Price of Disk Harmeet Malhotra Director Enterprise Storage & Solutions

Agenda Workloads, Disks & SSDs – what’s common. Why Flash Drives in Enterprise Storage? What is Dell doing different with Flash… Compellent EqualLogic

Data centers need to handle many types of diverse application workloads Random Sequential Read-intensive Write-intensive Indexing Front End Web OLTP Database Email/Messaging Data Warehousing Virtual Desktop HPC Streaming Media Web Applications Collaboration Infrastructure Other Applications are getting more dependent on higher I/O performance Data stored, backed up and archived is growing exponentially IT budgets are often staying flat Traditional storage systems are optimized for the middle of the spectrum SLAs are becoming more rigorous

What characterizes your workloads 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

Reliance on I/O-intensive solutions for critical applications is growing Hot/ Active Data I/O intensive solutions growing at 57% CAGR as SSD prices are reduced Cost/capacity optimized 19% CAGR growth is driven by the explosion of unstructured data Cold/ Static Data I/O Intensive (Flash) Performance Optimized Cost Optimized IT Managers are looking for storage solutions that can span both, hot and cold data, optimizing for performance and value IDC,, Worldwide Enterprise Storage Systems 2013–2017 Forecast, May 2013; Doc #241033

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 15K HDD Flash SSD $/GB 7.2K HDD Multi-core processors drive up processor utilization and demand for more I/O per server Virtualization is increasing the demand for random I/O with the “mixer effect”

Flash storage can be deployed at various layers to accelerate application performance Client Network Server-based cache (Tier-0) 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 Benefits of Fluid Cache extended to the entire SAN for maximum performance and reliability Dell Fluid Cache for DAS on PowerEdge Storage Network Dell Compellent All-Flash or Hybrid-Flash Array

Best use of flash storage: transactional, IOPS-intensive workloads Indexing Data Warehousing OLTP 1 2 VDI 3 Random 4 Read-intensive Write-intensive Sequential Indexing Maintains indexes to allow quicker access to data Runs on databases to accelerate locating a block of data in queries Data Warehousing Stored data used to create reports or derive Business Intelligence Used for data mining, analysis, hypothesis testing, modeling OLTP Manage transaction-oriented applications, i.e. retail, banking Business can be hurt if data not accessible,slow During peak usage, customer experience can be effected VDI 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

What can flash storage do in your data center What can flash storage do in your data center? A way to accelerate business results and improve operational efficiency Accelerate business New revenue streams through reduction in latency and increase in IOPS Quicker business insights Faster user access Better customer experience Increase operational efficiency Minimized datacenter footprint Lower power consumption Lower cost of software licenses Simplified management

Compellent Hybrid-Flash Array SSDs have different characteristics Compellent is the first storage solution to tier sub-LUN data across SSDs Write-Intensive (WI) SLC SSDs Read-Intensive (RI) MLC SSDs WI SLC SSDs Workload Mainstream Applications Any usage Mostly Read 90/10 R/W Mix Tier 1 Capacity 400 GB 1.6 TB Write endurance Great Moderate RI MLC SSDs Tier 2 Full-drive writes/day 30 3 Random read perf. Great Great Write performance Great Moderate HDDs Relative costs 4x 1x Tier 3 Compellent Hybrid-Flash Array Tiering flash across multiple SSD types enables Compellent to disrupt the flash cost model with a superior $/GB ratio.

All Dell Primary Storage Solutions offer Flash Workload-optimized solutions for any size enterprise Compellent High-performance storage EqualLogic Easy-to-use virtualized storage PowerVault Affordable, entry level storage Dell Software Data management and protection Converged infrastructures Cloud deployments I/O intensive applications Vertical file-intensive apps Maximize efficiency, drive results faster and boost resiliency

Lets look at Dell Compellent first

Secret sauce behind the flash optimized Compellent: tiering with Data progression RAID 10 RAID 6 Write Intensive Enterprise SAS SSD Read Optimized RAID 5 7.2K SAS HDDs Flash-optimized Data Progression leverages the endurance of write-intensive SSDs and the value of read- intensive SSDs. $$$ $$ $ 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 By automatically tiering data across SLC and MLC SSDs, Dell can reduce costs up to 80% compared to other Flash- optimized solutions.

Workload requirement: New economies of flash: tiering innovations allow Compellent to offer flash at the price of disk Workload requirement: 40,000 IOPS 30TB Raw Storage 84% RU reduction 50% more IOPS 90% latency reduction 56% lower price Benefits of Tiered Flash 264 x 15k HDDs Space Savings 24 x SSDs

Single SSD type (SLC or eMLC) only New economies of flash with Compellent : 1/5th the price vs. competitive all-flash solutions Compellent With Flash Tiering Other Vendors Single SSD type (SLC or eMLC) only Write Intensive (SLC) Read Intensive (MLC) Hardware 80% Lower costs Higher costs Power / Cooling Software Support

New economies of flash with Compellent : 1/2 the price vs. competitive hybrid solutions Competitors 50% Less Solution Price $/GB Significant price advantage with Compellent hybrid solutions due to tiering flash across multiple SSD types. Compellent WI or RO SSDs Aggregate $/GB of competitive hybrid systems Using flash tiering: Tier 1: WI SSDs Tier 2: RI SSDs Tier 3: 7k HDDs

Designed to address multiple performance levels Compellent helps align storage performance with workload requirements All-flash for business critical workloads Large capacity flash with low latency and scalability Tier 1 applications OLTP Oracle database VDI gold images and logs Big data analytics Hybrid for general workloads Capacity with mainstream application performance Better performance with limited flash capacity General workloads Cost optimized HDD- based for lowest $/GB Large capacity, lowest $/GB When large datasets are required Data that is not performance sensitive Backup and archive 15K RPM HDDs WI & RI SSDs 7K RPM HDDs WI & RI SSDs 7K RPM HDDs

Compellent extends the economic value with a feature-rich storage platform Optimal $/GB & $/IO Lower TCO by balancing performance and capacity needs in a single platform Tiering Automatically move data between Flash tiers and HDD tiers Scalability Scale to meet storage requirements with either SSD or HDD  $ Replication Replicate business critical data between disparate storage systems Unified Storage Management Manage multi tiered storage solution with a single pane of glass Enterprise Class Support Leverage best of breed enterprise class support 

Slash costs with more efficient use of every disk Automated Tiered Storage Thin Provisioning Block-Level Intelligence Free Space Recovery Unified Block and File Thin Replication Fast Track Space efficient snapshots Compellent can reduce total storage software costs up to 96% and hardware costs up to 44% over a 10 year period. No pre-allocation required with Thin provisioning Cost-effective Disaster Recovery with Thin Replication Buy fewer and less expensive drives with Automated tiered storage Single solution for unified block and file

Dell EqualLogic

Dell EqualLogic PS6200S is All Flash. & PS6200XS is Hybrid Flash PS-M4110 blade array One streamlined data center PS4100/4110 Entry-level advanced functionality PS6100/6110 Business-responsive performance PS6500/6510 Powerful, virtual. data-center ready FS7600/7610 NAS unified storage Ideal for general purpose small-medium consolidated loads Converged storage servers and networking Highly virtualized Highly scalable 10GbE Ease of management 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 Ideal for heavy sequential workloads 10GbE capability 2.5x bandwidth per array Scales up to 2.3PB Ideal for file & block environments Flexible pool of scale-out 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

Automatic load balancing EqualLogic SAN Storage Pool SSD SAS or NL-SAS Array 1 Array 2 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 Automatically adjust to workloads as I/O changes Dynamically detect and correct latency issues Purchase storage for the predictable vs. peak workloads Align hot and cold data within an array and across arrays (based on dynamic workloads) Improve performance and minimize latency

Storage tiering and pooling Application/Web Servers Back-up Servers Active Directory Servers File Servers Exchange Servers SQL Servers Domain Servers Switched GbE Network EQL Backups EqualLogic EqualLogic Shares Backups eMail SQL AD/Dem Shares Shares Pool 1 Pool 2 Optimize storage and prioritize placement for maximum application performance and lowest cost Dedicate pools for unique security, compliance or performance demands Improve performance at the right price for heavy workloads (VDI, transaction database) Automatically classify and match application data with the most appropriate storage Tier between multiple generations of arrays Combine tiered storage with service catalogues to simplify management and significantly lower overall storage costs

SAN Headquarters - Historical performance monitoring and automatic diagnostics and data gathering Better plan and allocate resources by understanding usage over time Monitor performance and optimize usage with real-time data Improve performance by identifying and resolving bottlenecks before they occur Monitor replication to reduce backup windows and enhance data protection Save significant admin overhead by giving IT managers a single view of storage Quickly and easily consolidate information on SAN performance into pre-defined, full-color reports

“We’re successfully mitigating boot storms as well as load storms when a lot of people are logging into their virtual desktops at once. You’d be surprised how many IOPS it takes to log in—it’s one of the major challenges with large-scale VDI.” Luther Bowens, Systems and Operations Manager Indianapolis Public Schools 4x reduction in hardware costs with $2M savings every refresh cycle $140,000 annual savings in support 10 sec or less for virtual desktops to load Indianapolis Public Schools deployed Compellent with SSDs to optimize storage performance for VDI

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