All-Flash Versus Hybrid VMware Virtual SAN™: Performance vs. Price
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An expert panel discussed all-flash versus hybrid VMware Virtual SAN storage solutions. The discussion included: - A lab report that found an all-flash four-node Virtual SAN cluster delivered 49% better performance and 26% better price/performance than a hybrid configuration for database workloads. - Key features of Virtual SAN like policy-based management, high availability, and scalability from 2-64 nodes. - Reference architectures using SanDisk flash products in Virtual SAN deployments that achieved high performance results. - Certified ready nodes from Lenovo and Supermicro that integrate SanDisk flash for Virtual SAN.
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All-Flash Versus Hybrid VMware Virtual SAN™: Performance vs. Price
- 1. 1 Jack Poller, ESG Analyst The All-Flash Versus Hybrid Virtual SAN™: Performance vs. Price May 2016 Patric Chang, Senior Director, SanDisk Jase McCarty, Sr Technical Marketing Architect, VMware
- 2. 2 Forward Looking Statement During our meeting today we will make forward-looking statements. Any statement that refers to expectations, projections or other characterizations of future events or circumstances is a forward-looking statement, including those relating to market growth, industry trends, future products, product performance and product capabilities. This presentation also contains forward-looking statements attributed to third parties, which reflect their projections as of the date of issuance. Actual results may differ materially from those expressed in these forward-looking statements due to a number of risks and uncertainties, including the factors detailed under the caption “Risk Factors” and elsewhere in the documents we file from time to time with the SEC, including our annual and quarterly reports. We undertake no obligation to update these forward-looking statements, which speak only as of the date hereof or as of the date of issuance by a third party, as the case may be.
- 3. 3 Speakers Overview Patric Chang, Sr Director, Strategic Partner Ecosystems, Western Digital Patric Chang works in SanDisk’s Strategic Partner Ecosystems. He has deep experience in solution and business development in virtualization, End User computing or Virtual Desktop Infrastructure and cloud computing. Patric has broad industry experience in working with leading ISVs and OEMs to utilize flash, server, storage and networking products for enterprise applications, IaaS, SaaS and other cloud solutions. Patric Chang has spoken at numerous leading trade shows and events including various VMUGs, VMworld and Oracle Open World. Jack Poller, Sr Lab Analyst, Enterprise Strategy Group (ESG) As a Lab Analyst at Enterprise Strategy Group, Jack Poller provides independent, hands-on validation and analysis of emerging IT hardware and software products including software-defined networking and storage, virtualization, security, and IT systems management. Jack brings more than 25 years of IT industry experience to his role. Prior to joining ESG, he spent 10 years as a marketing consultant for storage and networking startups. Jack’s formative years in the industry were spent as a software and hardware engineer, developing 3D graphics, storage and networking chips and systems at vendors like Novel, NeTpower, Chromatic Research, Rendition, and Silverback Systems. Jack received a BSc in Applied Math and Computer Science from Carnegie Mellon University, and an MBA from the Leavy School of Business at Santa Clara University. Jase McCarty, Staff Technical Marketing Architect, VMware Storage Jase McCarty has a diverse history in technology over the past 25 years. As a customer, he has worked in academics, health insurance, financials, and the military, in positions ranging from administration, architecture, web development, instruction, & training. Previous to coming to VMware, he was a vSpecialist at EMC, supporting the Federal Government. He has co-authored two books on VMware virtualization, maintains a technical blog at jasemccarty.com, and is active on Twitter as @jasemccarty.
- 4. 4 Topics Covered Today All-Flash Versus Hybrid VMware Virtual SAN™: Performance vs. Price – Jack Poller Key features and highlights of Virtual SAN – Jase McCarty SanDisk® Flash Product Portfolio and Reference Architectures for Virtual SAN – Patric Chang Q&A
- 6. 6 Storage Challenges 18% 18% 20% 20% 20% 23% 23% 26% 26% 27% 5% 6% 5% 6% 4% 4% 6% 8% 8% 7% Device management Power and cooling costs Need to support growing virtual… Running out of physical space Management, optimization and… Data migration Staff costs Data protection (e.g.… Rapid data growth rate Hardware costs In general, what would you say are your organization’s biggest challenges in terms of its storage environment? Which would you characterize as the primary storage challenge for your organization? (Percent of respondents, N=373, top ten shown) Primary storage… All storage… Source: ESG Research Report, 2015 Data Storage Market Trends, October 2015 © 2016 by The Enterprise Strategy Group, Inc.
- 7. 7 Top 10 IT Priorities Source: ESG Research Report, 2015 Data Storage Market Trends, October 2015 © 2016 by The Enterprise Strategy Group, Inc. 18% 19% 20% 20% 20% 20% 21% 22% 23% 37% Business continuity/disaster… Improving collaboration capabilities Desktop virtualization Increasing use of server… Major application deployments or… Improving data backup and… Data integration Managing data growth Business intelligence/data… Cybersecurity initiatives Top 10 most important IT priorities over the next 12 months. (Percent of respondents, N=633, ten responses accepted)
- 8. 8 VMware Virtual SAN 3—64 Nodes VMware VSAN Virtual Data Store Virtual Machines VMware VSAN 6 Hyper-Converged Infrastructure
- 10. 10 Test Bed VMware VSAN Virtual Data Store 8 Virtual Machines 2 per Physical Server 4 Industry Standard Servers VMware VSAN 6 SQL Server All-FlashHybrid
- 11. 11 1,702,776 2,542,760 0 1,000,000 2,000,000 3,000,000 Hybrid All Flash NewOrdersperMinute(NOPM) HammerDB Performance Results VMware VSAN with SanDisk SSDs 49% Test Results: Performance NOPMs
- 12. 12 0 100,000 200,000 300,000 400,000 Hybrid All Flash NewOrdersperMinute(NOPM) HammerDB Results for Each Individual VM VMware VSAN with SanDisk SSDs Test Results: NOPMs for each VM
- 13. 13 0.20 0.14 0.00 0.05 0.10 0.15 0.20 0.25 Hybrid All Flash $/NewOrdersPerMinute($/NOPM) HammerDB Price/Performance: $/New Orders Per Minute VMware VSAN with SanDisk SSDs Test Results: Price/Performance
- 14. 14 Why This Matters Storage performance can be a limiting factor in database and virtual environments A hybrid four-node Virtual SAN cluster with SanDisk SSDs delivered 1,702,776 new orders per minute An all-flash four-node Virtual SAN cluster with SanDisk SSDs delivered 2,542,760 new orders per minute The all-flash configuration delivered 49% better performance and 26% better price/performance Higher performance means less hardware, saving on power, cooling and application software licensing © 2016 by The Enterprise Strategy Group, Inc.
- 15. 15 Key features and highlights of Virtual SAN 15
- 16. Infrastructure Complexity • Purpose-built hardware requiring specialized skills • Complex management and scaling with poor integration • Challenging to size for VDI Traditional Infrastructure Hyper-Converged Infrastructure • Simple storage deployed on commodity x86 servers • Pay-as-you-grow scaling • High, predictable performance • Policy based storage IT Shift Virtual SAN + vSphere + Horizon
- 17. VMware HCI: A Single, Seamlessly Integrated Software Layer 17 Scale-Out Hyper-Converged Solution • Compute, storage, networking delivered as software • Tightly integrated software stack • Elastic Scale-Out across x86 building blocks Software • Convergence of physical storage on x86 hardware • Building-block approach Hardware
- 18. VMware Virtual SAN: Radically Simple Storage 18 Hyper-Converged Storage Designed for Virtual Machines vSphere + Virtual SAN … • Resource efficient hyperconverged solution • Enterprise-level availability, scalability and performance on standard x86 servers • Richest set of deployment options • Deeply integrated with the VMware stack • All-flash and hybrid configurations • Scales from 2 to 64 nodes • Policy-based SLA automation Overview Hard disksSSD Hard disks SSD Hard disks SSD Virtual SAN Datastore
- 19. Virtual SAN Simplifies And Automates Storage Management 19 Per-VM Storage Service Levels From a Single Self-tuning Datastore Storage Policy-Based Management Virtual SAN Shared Datastore vSphere + Virtual SAN SLAs Software Automates Control of Service Levels No more LUNs/Volumes! Policies Set Based on Application Needs Capacity Performance Availability Per VM Storage Policies
- 20. Virtual SAN Architecture • Minimum of 3 hosts in a cluster configuration or 2 hosts + witness • All 3 host must contribute storage • Recommended that hosts are configured with similar hardware • Hosts: Scales up to 64 • Disks: Locally attached storage o Hybrid: Magnetic disks and flash devices o All-Flash: Flash devices only • Network o 1GB Ethernet OR o 10GB Ethernet (preferred) • “Witness” component (only metadata) acts as tie-breaker during availability decisions 20 esxi-01 esxi-02 esxi-03 VSAN network vSphere Cluster REPLICA-1 REPLICA-2 VSAN datastore Witness
- 21. Tiered All-Flash and Hybrid Options 21 Caching Data PersistenceVirtual SAN All-Flash 100K IOPS per Host + sub-millisecond latency Writes cached first, Reads from capacity tier Capacity Tier Flash Devices Reads primarily from capacity tier SSD PCIe NVMe Hybrid 40K IOPS per Host Read and Write Cache Capacity Tier SAS / NL-SAS / SATA SSD PCIe NVMe
- 22. Virtual SAN Delivers 6-Nines, Enterprise-Class Availability 22 99.9999% Availability • With FTT=2 VSAN delivers 6x9s protection less than 32 seconds of downtime/year • Typical hardware components provides about 2x9s availability level (3.65 days downtime/year) • Virtual SAN exponentially increases the availability through mirroring across the cluster • With default availability policy, Virtual SAN delivers 5x9s protection less than 5 minutes of downtime/year • Assign level of availability on a per-VM basis and adjust on the fly Available with 2 Failures <32 sec
- 23. Unprecedented Customer Momentum 3500+ Customers in the first 24 months In my experience VMware solutions are rock solid…we’re ready to nearly double our VSAN deployment. It really did work as advertised…the fact that I have been able to set it and forget it is huge!
- 24. Why Customers Love Virtual SAN CHOICE Choose preferred vendor Meet exact needs, no waste SIMPLICITY 2-click provisioning Integrated workflows Policy-driven management COST 50% TCO savings Simple to operate and learn $ 3 PERFORMANCE AND SCALABILITY 1.5 - 5x faster than competitors Predictable, elastic scaling
- 25. VMware Virtual SAN 6.2 Ready For All vSphere Workloads VMware vSphere + Virtual SAN End User Computing Test/Dev ROBOStagingManagementDMZ Business Critical Apps DR / DA Best storage for VMs Optimized for vSphere Enterprise-class resiliency Business critical app ready
- 26. 26 SanDisk Certified Products for Virtual SAN and Reference Architectures – Patric Chang 26
- 27. 27 Flash Family Fusion ioMemory™ SX350, PX600 Lighting Ascend™, Eco™ and Ultra™ Gen II Optimus Ascend ™ Gen II Optimus Eco™, Optimus MAX™ CloudSpeed, Ascend™, Eco™ and Ultra™ Storage Tier Caching Caching, Capacity Caching, Capacity Capacity Capacity, Caching Capacities 1.0TB - 6.4TB 200GB - 1.6TB 200GB - 1.6TB 2TB, 4TB 100GB - 800GB, 240GB - 960GB Industry’s Broadest Portfolio For Virtual SAN 6 Device Types PCIe SAS SATA SAS SAS Performance Class F Class E Class E Class E, C Class C, C, D
- 28. 28 Reference Architectures with SanDisk Enterprise Flash1 OEM Partner Solution Proof Point Flash-Enabled By Optimus Ascend & Optimus MAX on Lenovo System X 3650 M5 Servers 3.08 Million New Orders Per Minute1 using HammerDB and SQL Server 2014 on All-Flash 4- node Virtual SAN Lightning Ascend and Eco Gen. II on Dell R730 Gen13 Servers 800 Horizon View 6 Desktops using Login VSI on All-Flash 4-node Virtual SAN Lightning Ascend and Eco Gen. II on Dell R730 Gen13 Servers Tested for Online Transaction Processing using HammerDB and Oracle 12c on All-Flash 4- node Virtual SAN Fusion ioMemory (PCIe) on HP ProLiant DL360 Gen9 Servers 300 Horizon View 6 Desktops on 3-node Hybrid Virtual SAN tested using VMware View Planner Optimus Ascend & Optimus MAX on Lenovo System X 3650 M5 Servers Business Critical Applications and VDI Desktops VDI tested using VMware Horizon View Planner on All-Flash 4-node Virtual SAN Lightning Ascend and Eco Gen. II on Dell FX2 Servers 1.18 Million Orders Per Minute using DVD Store Version 2.1 and All-Flash 4-node Virtual SAN 1 Reference Architectures developed with VMware and our OEM Partners in VSAN Smart Play directory here.
- 29. 29 Business Critical Application Solution with All-Flash Virtual SAN High performance and low cost solution for Business Critical Applications and Databases 3.08 Million New Orders Per Minute (NOPMs) on 4-Node Virtual SAN Cluster1 1 Based on Performance tests conducted by SanDisk using HammerDB and SQL Server Database. Disk Group 2 4 node VSAN Cluster for OLTP Workload vSphere 6.0 and Virtual SAN 6.0 SQL Disk Group 1 Disk Group 2 Disk Group 1 Disk Group 2 Disk Group 1 Disk Group 2 Disk Group 1 Node 4Node 3Node 2Node 1 SQL SQL SQL SQL SQL SQL SQL Server Platform 4 Nodes of Lenovo System X 3650 M5 series servers 2 Disk Groups per node (1:2) Caching: SanDisk Optimus Ascend Gen II 6G SAS Drive (800 GB) Capacity: SanDisk Optimus Max SAS Drive (4.0 TB) Disk Controller: M5210 RAID Controller VM Configuration 16 vCPU and 96 GB RAM 8 VMs – each node running 2 VMs and 2 database instances 10 disk files @ 800GB Total for each VM (OS 100GB & DB 800GB & Log 100GB), Software Virtual SAN 6.0 vSphere 6, vCenter Server 6 SQL Server 2014 Standard without SA HammerDB - OLTP 5000 Warehouse workload
- 30. 30 Business Critical Application Solution and VDI with Supermicro High performance and low cost solution for Business Critical Applications and VDI Desktops 128 TB of Raw Flash Capacity in 4-Node VSAN Cluster Disk Group 2 4 node VSAN Cluster for OLTP Workload vSphere 6.0 and Virtual SAN 6.0 Disk Group 1 Disk Group 2 Disk Group 1 Disk Group 2 Disk Group 1 Disk Group 2 Disk Group 1 Node 4Node 3Node 2Node 1 Server Platform 4 Nodes of TwinPro2 Server w/3008 8 E5-2670V3 CPUs per node 1024GB Memory per node 64TB Raw Flash Capacity per node 4 Disk Groups per node (1:2) Caching: SanDisk Optimus Ascend Gen II 6G SAS Drive (800 GB) Capacity: SanDisk Optimus Max SAS Drive (4.0 TB) Disk Controller: SMC3008 12GB SAS/HBA/2 Software Virtual SAN 6.0 vSphere 6 vCenter Server 6
- 31. 31 Virtual SAN 6 Ready Nodes with SanDisk Enterprise Flash1 Partner Certified VSAN Ready Nodes Reference Architecture Flash-Enabled By Optimus Ascend & Optimus MAX on Lenovo System X M5 Servers: AF-6: Lenovo System x3550/x3650 M5, 15.3TB per node AF-8: Lenovo System x3650 M5, 30.7TB per node 3.08 Million New Orders Per Minute4 using HammerDB and SQL Server 2014 on All-Flash 4-node Virtual SAN Optimus Ascend & Optimus MAX on Supermicro Servers: AF-6: SMC TwinPro2 2U, 32TB per node 730 Horizon View 6 VDI Desktops5 on All-Flash 4-node Virtual SAN tested using VMware Horizon View Planner Fusion ioMemory on HP ProLiant DL360 Gen9 Servers: HY-8 Series DL360 Gen9 VDI 12TB per node 300 Horizon View 6 Desktops3 on 3-node Hybrid Virtual SAN tested using VMware View Planner With Lightning II on Dell FX2 Platform: AF-6: DELL FX2 FC430, 4-Nodes, 8TB per Node AF-6: DELL FX2 FC630, 3-Nodes, 8TB per Node AF-6: DELL FX2 FC830, 3-Nodes, 8TB per Node AF-8: DELL FX2 FC630, 3-Nodes, 12TB per Node AF-8: DELL FX2 FC830, 3-Nodes, 12TB per Node 1.18 Million Orders Per Minute2 using DVD Store Version 2.1 and All-Flash 4- node Virtual SAN Lightning Ascend on Dell R730 Gen13 Servers: HY-6: DELL 730xd, 8TB Per Node Horizon View 6 Desktops using Login VSI on All-Flash 4-node Virtual SAN 1 Posted on VMware Compatibility Guide for Virtual SAN here.
- 33. Unprecedented Customer Momentum 3500+ Customers in the first 24 months In my experience VMware solutions are rock solid…we’re ready to nearly double our VSAN deployment. It really did work as advertised…the fact that I have been able to set it and forget it is huge!
- 34. 34 Oregon State University: High Performance for VDI with Budget-friendly Scaling Corvallis, Oregon Academic Institution 26,000 students Challenge • Storage overburdened by VDI workloads • User login took over 20 minutes during peak times • Recomposing VDI environment took 10+ hours • Limited storage budget Solution • Virtual SAN on industry standard x86 servers Results • Drastically better performance: user login time reduced from 20 minutes to 1 minute • Increased VDI scale: support 170+ additional users on existing servers/network • Simplified management: resetting desktops reduced from 10 hours to <2 hours • Lower cost and ease of scale: lowered acquisition costs by 75% and enabled easier scaling for future needs Boot Time 20x Faster VDI Density 6x Greater
- 35. 35 Q&A
- 36. 36 Patric Chang Patric.Chang@sandisk.com +1-408-597-1442 Jase McCarty sdssales@vmware.com @jasemccarty Customer Offer Apply for VSAN Assessment now: http://tinyurl.com/vsan-assessment Or contact us to apply for a free Proof of Concept (POC) or other additional information. We’re here to help.
- 37. 37 © 2016 Western Digital Corporation or its affiliates. All rights reserved. SanDisk and the SanDisk logo are trademarks of Western Digital Corporation or its affiliates, registered in the U.S. and other countries. Fusion ioMemory, Optimus, Lightning and CloudSpeed are a trademark of Western Digital Corporation or its affiliates. Other brand names mentioned herein are for identification purposes only and may be the trademark(s) of their respective holder(s).
Hinweis der Redaktion
- The data center of today is transforming to become increasingly virtualized, and next-generation data centers will incorporate more public, private, and hybrid cloud-based applications. Virtualization and cloud bring server consolidation, workload mobility, self-provisioning, management, multi-tenancy, and the ability to rapidly scale up and out. Organizations continue to look for ways to simplify operations, increase resource utilization, and improve TCO in IT. When asked what their most important storage challenges were, more than half of respondents to an ESG survey said capital expenses and more than one third said operational expenses.
- What’s driving these spending trends? After hardware costs, the rapid growth of data and the subsequent requirements to protect that data were the most commonly cited storage challenges. This makes sense in light of the fact that managing data growth and improving backup and recovery—both with obvious storage implications—were among the top five most-cited overall IT priorities in ESG’s 2016 IT Spending Intentions Survey.
- In a hybrid configuration, SanDisk Optimus Ascend SSDs serve as read-and-write cache, and magnetic disks provide the data store capacity. In an all-flash configuration, Optimus Ascend SSDs are used for write caching and SanDisk Optimus Max SSDs provide data store capacity. No read caching is provided because the read performance from the Optimus Max SSDs is more than sufficient.
- The test bed represents a common configuration for VMware Virtual SAN, and includes four industry-standard x86 servers, each running VMware Virtual SAN 6, which aggregated all storage resources into a single virtual data store. For the hybrid configuration, each physical server was configured with 16 drives, split into two disk groups of eight drives each. Each disk group was composed of seven industry-standard 1.2TB 10K RPM magnetic SAS drives for storage capacity, and one 800GB SanDisk Optimus Ascend SSD for the read and write cache. For the all-flash configuration, each physical server was configured with six drives, split into two disk groups of three drives each. Each disk group was composed of two SanDisk Optimus Max 4TB SSDs for storage capacity, and one 800GB SanDisk Optimus Ascend SSD for write acceleration. Eight virtual machines,, were running Microsoft Windows Server 2012 R2 and Microsoft SQL Server 2014. Each VM was configured to have 16 virtual CPUs and 96 GB of RAM. ESG simulated a typical OLTP workload using HammerDB, an industry-standard, open source database load testing and benchmarking tool. The workload was composed of ten transaction types with a defined ratio of execution. Four of the transactions performed database updates, and the rest were read only. ESG Lab started the test with a five-minute ramp to reach steady state operations. Once steady state was achieved, the test ran for 30 minutes.
- We measured more than 1.7 million new orders per minute for the hybrid configuration. The all-flash configuration delivered 49% better performance, at more than 2.5 million new orders per minute.
- Digging in to the details, the hybrid configuration showed some variability, with a close-to-even workload distribution across SQL servers. The all-flash configuration yielded higher levels of performance with less variability and therefore better workload distribution.
- Using street prices for the cost of the servers, software licenses, magnetic disks, and SanDisk SSDs, The all-flash solution was 10% more expensive than the hybrid solution, and delivered 49% better performance. Combing price and performance, the all-flash solution was 26% less for on a price per new orders per minute basis, reflecting the price/performance advantage of a SanDisk-powered all-flash Virtual SAN solution. It would take an additional $164,000 investment in a hybrid solution to achieve the performance of the all-flash solution.
- Lets double click on Hyper-Converged Infrastructure. Hyper-Converged Infrastructure (HCI) leverages the hypervisor to deliver compute, networking and shared storage from a single x86 server platform. The software-driven architecture allows the convergence of physical storage onto commodity x86 servers, enabling a building block approach with scale-out capabilities. The use of commodity x86 server and storage hardware allows datacenters to operate with agility on a highly scalable, cost-effective infrastructure. How VMware Enables Hyper-Converged Infrastructure The foundational components of VMware’s HCI solution are VMware vSphere and VMware Virtual SAN, which allow the convergence of compute, storage and networking onto a single, integrated layer of software that, can run on any commodity x86 infrastructure. vSphere abstracts and aggregates compute and memory resources into logical pools of compute capacity while Virtual SAN, embedded in vSphere, pools server-attached storage to create a high performance, shared datastore for virtual machine storage. Customers can further extend vSphere to achieve the convergence of networking using VMware NSX which decouples network resources from underlying hardware and brings the operational model of a virtual machine to the datacenter network.
- Hyper-Converged Infrastructure (HCI) leverages the hypervisor to deliver compute, networking and shared storage from a single x86 server platform. The software-driven architecture allows the convergence of physical storage onto commodity x86 servers, enabling a building block approach with scale-out capabilities. The use of commodity x86 server and storage hardware allows datacenters to operate with agility on a highly scalable, cost-effective infrastructure. How VMware Enables Hyper-Converged Infrastructure The foundational components of VMware’s HCI solution are VMware vSphere and VMware Virtual SAN, which allow the convergence of compute, storage and networking onto a single, integrated layer of software that, can run on any commodity x86 infrastructure. vSphere abstracts and aggregates compute and memory resources into logical pools of compute capacity while Virtual SAN, embedded in vSphere, pools server-attached storage to create a high performance, shared datastore for virtual machine storage. Customers can further extend vSphere to achieve the convergence of networking using VMware NSX which decouples network resources from underlying hardware and brings the operational model of a virtual machine to the datacenter network.
- Virtual SAN is VMware’s software-defined storage solution, built from the ground up for vSphere virtual machines. It abstracts and aggregates locally attached disks in a vSphere cluster to create a storage solution that can be provisioned and managed from vCenter and the vSphere Web Client. Virtual SAN is hypervisor-converged – that is – storage and compute for VMs are delivered from the same x86 server platform running the hypervisor. It integrates with the entire VMware stack, including features like vMotion, HA, DRS etc. VM storage provisioning and day-to-day management of storage SLAs can be all be controlled through VM-level policies that can be set and modified on-the-fly. Virtual SAN delivers enterprise-class features, scale and performance, making it the ideal storage platform for VMs.
- VMware’s Storage Policy Based Management framework allows you to define storage requirements on a per-VM basis, based on the needs of the applications running in the VMs. Simply define the amount of capacity, performance and availability for each VM Virtual SAN then matches those defined requirements to underlying storage infrastructure. Unlike traditional external storage, where provisioning is done at storage array layer, in a more rigid-hardware-centric way… Virtual SAN puts the application in charge, and allows you to provision and control storage in an application-centric way Virtual SAN software abstracts underlying hardware and automates ongoing management of the storage SLAs assigned to VMs End result => No more LUNs of Volumes… This simplifies storage management…. And as you will see, saves you time and money.
- WRITES: Each write first goes to a flash device. It is then de-staged to the data persistence tier (Magnetic disks in Hybrid architecture and flash devices in All-Flash architecture). When creating replicas, the writes for each replica to the flash devices is Virtual SAN WITNESS: Witness components—those that contain only object metadata—are part of every storage object. A witness serves as a tiebreaker, to avoid split-brain behavior when availability decisions are made in the Virtual SAN cluster. Each Virtual SAN witness component also consumes 2MB of capacity.
- Virtual SAN enables both hybrid and all-flash architectures. Irrespective of the architecture, there is a flash-based caching tier which can be configured out of flash devices like SSDs, PCIe cards, NVMe etc. The flash caching tier acts as the read cache/write buffer that dramatically improves the performance of storage operations. In All-Flash architecture, the flash-based caching tier is intelligently used as a write-buffer only, while another set of SSDs forms the persistence tier to store data. Since this architecture utilizes only flash devices, it delivers extremely high IOPs of up to 100K per host, with predictable low latencies. Reads will primarily come from the capacity tier, although if data was freshly written is “hot” and not de-staged it may read from the write cache tier. In the hybrid architecture, server-attached magnetic disks are pooled to create a distributed shared datastore, that persists the data. In this type of architecture, you can get up to 40K IOPs per server host.
- Typical hardware component mean time between failures is between 1M to 2M hours – providing about 2x9s availability level By replicating components across the cluster, between rack or sites - Virtual SAN exponentially increases the availability With default availability policy of Failures to Tolerate (FTT) of 1, Virtual SAN delivers 5x9s protection Increasing the availability policy to FTT=2 results in 6x9s protection – it’s more likely to lose data from a natural disaster than losing 3 hardware components at the same time Best part is that you get to choose the level availability for every VM. Better yet, you can change it whenever you like and VSAN will make the changes automatically.
- Virtual SAN is built from the ground up for vSphere environments and its core value proposition revolves comes from the following key strengths: Radically Simple It is embedded in the VM kernel and does not need to be installed like a storage appliance. Just 2 clicks and its enabled! It uses storage policies to assign storage services to specific VMs. It then automatically tunes and rebalances storage to ensure that the VM storage SLAs stay compliant with the policies throughout the lifecycle of the VM. It is managed through the same web interface as the rest of your vSphere environment. This makes it easy for even the VI Admin to manage storage and eliminates the need for specialized skillsets. It is completed integrated into VMware stack, and works seamlessly with other vSphere features and VMware products. One software stack, one vendor No physical storage silo Policy-driven management Integrated workflows High Performance VSAN 6.0 introduced a new flash architecture for caching and data persistence. This provides the ability to get high IOPS with consistently low latencies suitable for business-critical or transaction processing applications that require consistent response times It is embedded in ESXi kernel and therefore optimizes the data I/O path better than other technologies that need a storage virtual appliance One of VSAN’s core advantages is its ability to scale performance and capacity in a linear and predictable manner: both scale-out or scale-up by adding flash, magnetic disks or hosts as needed Up to 90k IOPs per host All-flash for sub-ms response Predictable, elastic scaling 1.5 – 5x faster than competitors Lowers TCO by as much as 50% VSAN has a hardware independent architecture which can utilize cheaper server-side, industry-standard components to reduce storage capex; the scaling and purchasing in chunks allows the flexibility to change vendors or hardware over time, ensuring you use the latest available on the market Grow-as-you-go scaling allows investments to be spread over time in a more cost-effective manner Last but not least, its VMware integration, policy-driven control and automation make it operationally efficient, saving even more dollars in the long run 50% lower capital costs Simple to operate and learn x86, server-side economics Grow-as-you-go Choice: Hardware-agnostic Choose preferred vendor Use existing processes Meet exact needs, no waste
- With the major enhancements of this release, Virtual SAN provides both enterprise-class scale and performance as well as new capabilities that broaden the applicability of the now proven Virtual SAN technology to business critical environments. Virtual SAN is built from the ground up for the vSphere virtual infrastructure. With its simplicity, performance, scalability and cost-savings, VSAN is suited to be the storage for all your VMs. Virtual SAN is now enterprise-ready and customers can use it for a broad range of use cases, including business-critical and tier-1 production applications.
- This is a reference architecture which is the basis for 2 VSAN Ready Nodes which we developed jointly with Lenovo and VMware. This solution can process 3M New Orders Per Minute.
- 1 Posted on VMware Compatibility Guide for Virtual SAN here. 2 Based on tests and report by Principled Technologies. Whitepaper here. 3 Based on Performance tests conducted by SanDisk and HP using Horizon View Planner. Whitepaper here. 4 Based on Performance tests conducted by SanDisk using HammerDB and SQL Server Database. Solution brief here. 5 Based on Performance tests conducted by SanDisk and HP using Horizon View Planner. Whitepaper here.