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Eric Burgener VP, Product Management

A New Approach to Storage i n Virtual Environments. March 2012. Eric Burgener VP, Product Management. Agenda. Storage I/O in virtual environments Implications Industry responses The storage hypervisor. Hidden Storage Costs of Virtualization. ❶ Poor performance

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Eric Burgener VP, Product Management

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  1. A New Approach to Storage in Virtual Environments March 2012 Eric Burgener VP, Product Management

  2. Agenda • Storage I/O in virtual environments • Implications • Industry responses • The storage hypervisor March 2012

  3. Hidden Storage Costs of Virtualization • ❶Poor performance • Very random, write-intensive workload • Spinning disks generate fewer IOPS • Storage provisioning trade-offs • ❷ Poor capacity utilization • Over-provisioning to ensure performance • Performance trade-offs VM VM VM VM • ❸ Complex management • Requires storage expertise • Imposes SLA limitations • Limits granularity of storage operations Virtual Machines The VM I/O Blender March 2012

  4. Hidden Storage Costs of Virtualization • ❶Poor performance • Very random, write-intensive workload • Spinning disks generate fewer IOPS • Storage provisioning trade-offs • ❷ Poor capacity utilization • Over-provisioning to ensure performance • Performance trade-offs VM VM VM VM Can decrease storage performance by 30% - 50% • ❸ Complex management • Requires storage expertise • Imposes SLA limitations • Limits granularity of storage operations Virtual Machines The VM I/O Blender March 2012

  5. VDI Environments Are Even Worse • Windows desktops expect dedicated local disk • Even more write-intensive due to many more VMs/host • Much wider variability between peak and avg IOPS • Boot, login, application, logout storms • Add’l storage provisioning, capacity consumption issues VIRTUAL DESKTOPS March 2012

  6. Yet Another “Virtual” Storage Conundrum HIGH PERFORMANCE Poor space utilization SPACE-EFFICIENT Poor performance RAPID PROVISIONING Poor performance Thick/Fixed Disks Fully provisioned Thin/Dynamic Disks Thin provisioned Linked Clones/Differencing Disks Writable clones The virtual administrator’s choice: pick just one March 2012

  7. Industry Responses HOST SSD CARDS BUY MORE STORAGE BUY FASTER STORAGE • Really speeds up reads • Does not necessarily speed up random writes • Expensive and precludes any “HA” support • Adding spindles adds IOPS • Tends to waste storage capacity • Drives up energy, backup costs • Add higher performance drives (if available) • Upgrade to a higher performance array • Increased storage complexity March 2012

  8. Storage Challenge Implications • Storage has to be significantly over-provisioned • Storage costs can unexpectedly be 30% - 50% higher • Performance vs provisioning times vs space efficiency vs cost Will I run out of storage budget before I finish? March 2012

  9. The Storage Hypervisor Concept … STORAGE HYPERVISOR SERVER HYPERVISOR • Server hypervisors increase server resource utilization and virtualize server resources • Increases resource utilization and improves flexibility • Storage hypervisors increase storage utilization and virtualize storage resources • Increases storage utilization and improves flexibility Performance, capacity and management implications March 2012

  10. Introduction of a Dedicated Write Log Per Host • Log turns random writes into a sequential stream • Storage devices can perform up to 10x faster • De-staging allows data to be laid out for optimum read performance • Minimizes fragmentation issues • Requires no add’l hardware to achieve large performance gains • The more write intensive, the better the speed up • Excellent recovery model for shared storage environments … HOST HYPERVISOR Optimized Writes Acknowledgements Optimized Reads Dedicated write log Optimized asynchronous de-staging Tier 1 Tier n Tiered Storage March 2012

  11. Log De-Couples High Latency Storage Operations THESE OPERATIONS NO LONGER IMPACT VM PERFORMANCE … HOSTS THIN PROVISIONING HYPERVISOR Write Logs ZERO IMPACT SNAPSHOTS Storage Pool HI PERFORMANCE CLONES Shared Storage INSTANT PROVISIONING March 2012

  12. The Virsto Storage Hypervisor Fundamentally changes the way hypervisors handle storage I/O Improves performance of existing storage by up to 10x Thin provisions ALL storage with NO performance degradation Reduces storage capacity consumption by up to 90% Enables almost instant provision- ing of high performance storage Reduces storageprovisioning times by up to 99% Allows VM-centric storage manage- ment on top of block-based storage Enables safe provisioning and de- provisioning of VMs by anyone March 2012

  13. How Virsto Works (1) • vLog provides very high write performance ALL the time • Sequentializes writes to speed up spinning disk or SSD … Virtual Desktop Virtual Desktop Virtual Desktop Virtual Desktop Virsto Virtual Storage Layer • Data asynchronously de-staged to vSpace • vSpace shared across all hosts (SAN) • Almost all reads handled from vSpace Hypervisor Optimized Writes Acknowledgements Virsto vLog HOST Optimized Reads 1 2 3 Tier 1 Tier n Optimized de-staging • Splits reads and writes across different spindles • Improves the performance of both Virsto vSpace March 2012

  14. How Virsto Works (2) • High latency operations can be done with NO performance impact • Regular provisioning, thin provisioning • Snapshot/clone creation/usage, backup … Virtual Server Virtual Server Virtual Server Virtual Server Virsto Virtual Storage Layer Hypervisor • All storage is “cluster-aware” with no performance impact • Supports HA failover, live migration, etc. Optimized Writes Acknowledgements Virsto vLog Host Optimized Reads 4 5 Tier 1 Tier n • Pure software solution that does not REQUIRE more hardware for performance • But speeds that up too if you buy it Optimized de-staging Virsto vSpace March 2012 6

  15. What Virsto Does For SSD: Log vs Cache Physical Host Physical Host • SSDs perform better • Sequential vs random write performance • Logs are much more efficient use of SSD capacity • Virsto vLogs are 10GB in size • Caches a % of primary storage capacity • Logs speed up EVERY write ALL the time • Can lock shared data into tier 0 SSD for read performance • Speeds up ALL reads ALL the time … Log (Virsto vLog) Shared Storage Primary Storage (Virsto vSpace) Tier 0 SSD placement options March 2012

  16. Integrated Virsto Management • Uses standard hypervisor workflows • VMware, Hyper-V • Transparently uses Virsto storage • Higher performance, faster provisioning, lower capacity consumption • Rapid Deployment Utilities For VMware View, Citrix XenDesktop VDI environments March 2012

  17. Proof Points in vSphere Environments: SDSU Baseline Environment Performance with Virsto 10X more IOPS 20% lower latency 9x CPU cycle reduction 341 IOPS Native VMDKs 3318 IOPS Virsto vDisks Virsto for vSphere December 2011 Results March 2012

  18. Proof Points in VDI Environments: MS EEC With Virsto, Hyper-V supports over 2x times the number of VDI sessions, assuming the same storage configuration 830 401 Virsto for Hyper-V June 2011 Results March 2012

  19. Demonstrated Customer Value March 2012

  20. Virsto Solutions • Pure software based solution • High performance, space-efficiency, rapid provisioning, cluster-awareness – ALL AT ONCE with your existing storage • Provides better utilization of spinning disk and/or SSD • Works with any heterogeneous block-based storage

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