Virsto Storage Hypervisor Adds Support for Citrix XenDesktop-- Virsto® Software, an innovative provider of VM-centric storage hypervisor software, today announced that it is deepening its commitment to Citrix desktop virtualization solutions with the release of a beta program for Citrix® XenDesktop® on vSphere. The integration of Virsto’s purpose-built storage hypervisor for virtual machines (VMs) with Citrix XenDesktop delivers dramatic savings on storage in virtual desktop deployments with accelerated provisioning and simplified management of thousands of virtual desktops.

1. Virtualization Without Compromise:
Virsto for XenDesktop
Gregg Holzrichter,
May 2012 VP Marketing Eric Burgener,
VP Product Marketing

2. Virsto for XenDesktop 5.5
Changing the economics of storage for virtualized desktops
 No Compromise Virtualization
 High performance AND space efficient - no longer either / or choice
 Finally Save Costs with VDI
 Support over 2x the desktops per host& Increase storage utilization by up to 90%
 Persistent Desktops that are cheaper and higher performance than physical
 Effortless Provisioning & Patching at Scale
 Virsto snapshots & clones support XenDesktop 5.5 native workflows
 Transparent management of VDI
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3. Seamless Integration with XenDesktop
 Virsto Rapid Deployment Utility supports XenDesktop 5.5
running on VMware ESX/ESXi 4.1 or ESXi 5.0
 Transparently leverages Virsto for storage provisioning
while using standard desktop creation workflows
 Effectively replaces PVS, MCS
 Supports the standard deployment, re-deployment and refresh workflows
 Virsto XenDesktop Connector hands Virsto-provisioned
desktops over to Desktop Studio
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4. Extending Virtualization Benefits: VDI
Reducing Cost & Complexity of Storage is the key
to successful desktop virtualization projects

5. Hidden Storage Costs of Virtualization
Current Storage Architecture: not virtualization ready
Degraded
VM
Performance
VM
Storage Capacity
VM Wastage
VM
Inefficient VM
Management
Writes to Storage
Virtualized Servers, VMs / VDI Experience “I/O Blender”
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6. 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,
VIRTUAL DESKTOPS capacity consumption issues
April 2012 6

7. Alternative Approaches to Solve Storage Challenge
Storage PCIe SSD Storage
Hypervisor Flash Appliance Arrays
Nimble EMC
NetApp
Hypervisor
Fusion I/O Tintri
VF Cache Pure HDS
Virsto STEC Fujitsu
Nutanix
OCZ StorSimple IBM
Dell
HP
Most Efficient Approach: Address I/O Blender at the source
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8. Defining the Virsto Storage Hypervisor
WHAT IT IS
VM Centric and purpose built software
Automation & Orchestration
New Economics for Virtualized
Environment/Cloud
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9. Demonstrated Customer Value
Customer Workload Storage Performance Storage Provisioning
Use Cases Increase Reduction Time
Fortune 100: SQL EMC 56x 93% 5,000 VMs in 5
Software Development Database VNX5500 sec.
Publicly Traded Oracle VNX,DMX 30x 60% 10 VMs in 37
Transportation VDI Compellent, sec.
Company (VSI/VDI Equallogic
mixed)
Publicly Traded Win/Linux Equallogic 22x 58% NA
Enterprise Software Server and VDI
Company (Test/Dev)
Publicly Traded Security Win Server Compellent 42x 93% 20 VMs in 5 sec.
Company
(Test/Dev and VSI)
Mid Size/SMB: VDI HP DL360 70x 80% 10 VDI in 2 Min.
Datacenter
Virtualization
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10. Technical Architecture – Single Host Detail
Server Host
Virsto Installs as VM1 VM2 VM(n)
Virtual Appliance Virsto
Virsto vDisk Virsto vDisk Virsto vDisk Virsto vDisk= New Disk Type
Performance = Thick VMDK
(NFS Datastore, Efficiency = Linked Clone
Offloads I/O from Hypervisor (ESX/Hyper-V/ESXi)
Hypervisor)
Logging architecture
Randomized I/O Sequential I/O Write Immediately Committed /
Acknowledged from Virsto vLog
Optimizes Reads +20%
Optimizes Writes up to 1000%
Virsto vLog
Virsto vSpace Virsto vSpace
Asynchronous Writes drain log
Optimized VM-level data placement
Block Storage Capacity (RAID)
Primary Storage 10

11. Technical Architecture – Virsto vPool
Server Host I Server Host II Server Host (N)
Virsto
Virsto
VM1 VM(n) Virsto VM1 VM(n) Virsto VM1 VM(n)
Master
VM VM Virsto vDisk Virsto vDisk VM Virsto vDisk Virsto vDisk
Service Virsto vDisk Virsto vDisk
ESX/ESXi ESX/ESXi ESX/ESXi
I/O Path I/O Path I/O Path
Virsto vLog Virsto vLog Virsto vLog
Virsto vSpace{Supports up to 4 Tiers}
Block Storage Capacity (RAID) Block Storage Capacity (RAID)
Primary Storage Incremental Storage Capacity
(ex. EMC VNX) (ex. Dell Equallogic) 11

12. Space Savings With Virsto vClones
CONVENTIONAL APPROACH
Capacity
Consumed
Disk1 Copy0 Copy1 Copy2 … Copy99 100 copies
(50GB) (50GB) (50GB) (50GB) (50GB) 1 original
VM VM VM VM VM 5TB
VIRSTO SNAPSHOTS & CLONES
99% space
vDisk1
(50GB)
savings
VM
vSnap1
(4KB)
vClone0
(4KB)
vClone1
(4KB)
vClone2
(4KB)
… vClone99
(4KB)
100 copies
0.05sec 0.05sec 0.05sec 0.05sec 0.05sec 1 original
VM VM VM VM VM 50.1 GB
created in 5 sec
VCLONES NEVER DEGRADE IN PERFORMANCE OVER TIME
© Virsto Confidential 12

13. Extending Virtualization Benefit: VDI
Promise of lower cost & easier management often unrealized
VDI VDI VDI VDI
End Point} Client Client Client Client
VDI Challenges
• Write intensive workloads
• Boot & login storm
• Increased I/O randomization
Vmware View / XenDesktop • Slow/complex provisioning
Server} Desktop Desktop Desktop Desktop
VM VM VM VM
vSphere (ESX) Current Impediments to VDI
• Over-provisioning storage
Highly Randomized
capacity to achieve acceptable
Write I/O performance
• Frequent update/patching
• Unacceptable cost / desktop
Storage} compared to physical PC
Centralized Storage (SAN)
• Poor end-user performance
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14. Virsto Storage Hypervisor
Multi-hypervisor support
Do for your storage
what virtualization has done for your servers
Industry’s 1st and Most Innovative
Storage Hypervisor
Virsto Value Proposition End User Benefit
Boost Performance up to 10x Improved Cost
Up to 10x Better Utilization Increased Efficiency
Efficient Storage Management Improved Agility
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16. Appendix
© Virsto, confidential 16

17. Storage Efficient VMs with Virsto
The relationship between the virtual
blocks and their physical location is
maintained in a map
VM
vDisk (50GB) Sector 0 Sector n-1
The vSnap is a pointer to an immutable
moment in time… 4Kb, no performance
impact upon creation
VM
vSnap
(4KB)
Sector 0
Sector n-1
To make the vSnap usable for I/O, we
A vClone is a read/write copy of the
Golden Master. Also created with no a vClone from it. Initially also is
create
performance impact and at 4Kbjust a pointer to the original data
VM vClone
(4KBs)
Sector 0
Sector n-1
© Virsto, confidential 17

18. Extending Virtualization Benefits: Dev / Test
Accelerate time to market, increase agility and lower cost
Enable IT to keep up with the speed of business
• Provision entire VM & storage in minutes vs. hrs or days
• Accelerate product time to market with faster testing
process
Faster, more efficient and flexible testing/QA
• Unlimited sandboxes with no storage penalty for parallel
testing
• Unlimited sandboxes from different points in time to
rollback to
• Same performance levels as physical machines for
accurate performance tests
Increase efficiency for scale
• Provision up to 10,000 VMs in the same workflow as 1 VM
with Virsto Rapid Provisioning Wizard
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19. Flexibility of Virsto’s for Dev/Test
Can clone this vSnap
Original source Can read and write this vClone
Virsto vDisk Then create a vSnap
Can continue modifying the clone
vDisk1 vSnap1 vClone1 without affecting the vSnap2 state
VM VM
Can go back and clone Can create a vClone of the vSnap2 state
the original vSnap
vClone4 vSnap2 vClone2 Can read and write this vClone
VM VM
VM
Can use this, then Can create vSnap3
snapshot it again vSnap4 Can clone this and
vSnap3 vClone3
VM VM read and write to it
VM
Space savings: Virsto stores shared blocks only once across all snaps/clones
© Virsto Confidential 19

20. Extending Virtualization Benefits: Databases
Challenges with Migrating Databases into a Virtual Environment
 Performance Bound
 IO Blender Effect Reduces Available Resources to Databases
 Degraded Customer Experience
 Expensive
 7 to 10 full copies for every 1 production database
 Additional overprovisioning required to compensate for IO Blender effect
 Not Agile
 Manual provisioning process – hours or days to provision 1 database copy
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21. Virsto Differentiation
Virtualization Requirement Virsto Traditional SSD
Storage Storage
Upto 50x Performance Gains, without Tiering or SSD
Up to 10X Storage Reduction without Tiering or SSD
Automated provisioning of VM and Storage in under 1 sec
Unlimited High Performance Thin Clones
Hardware and Hypervisor agnostic
Storage Virtualization multi-array namespace
Predictable storage performance at lowest cost to scale
Why buy only a partial solution, Virsto gives you the best of all the worlds: Performance
improvement, Storage Reduction and Rapid Provisioning all at the lowest cost of ownership.
© Virsto™ Confidential 21

22. Virsto and Flash Storage
• Virsto provides a number of unique ways to
leverage Flash based SSDs:
 vLog – tuning for optimizing destaging from flash
 vSpacetiering: configure flash SSDs for template
tiers: eliminate read hotspots
Huge ROI on flash storage
 Server side cacheing with vMotion and HA roadmap
© Virsto, confidential 22

23. TCO Analysis: Virsto Impact on Storage + IOPS
Random I/O prevents the full performance benefit of disk drives means not enough Performance and Over Provisioned storage.
© Virsto, confidential 23