backing up your virtual environment best practices
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Backing Up Your Virtual Environment – Best Practices
George Pradel: Sr. Director Strategic Alliances
Vizioncore
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Introduction
• Nearly 25 years experience in IT
– 13 years in Virtualization (Citrix, VMWare, Vizioncore)
– 12 years in corporate IT
• VMWare SE of the year 2005
• Speaker at VMWorld’s US and Europe, Interop and Virtualization Summit
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Drivers of Virtualization Adoption
• Initial virtualization strategies highlighted Server Consolidation
– Cost savings
• Hardware purchases
• Cooling/Electricity
• Floor space
– Hardware resource optimization
– Simplified provisioning
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Drivers of Virtualization Adoption
• Recent shift towards Disaster Recovery becoming a primary focus– Virtual Machines are very portable
– Working “underneath” the OS and Applications
– Hardware Independence• Server platform
• Storage infrastructure
– Decreased downtime (Live Migration)
– Rapid recovery if done correctly
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Drivers of Virtualization Adoption
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Virtualization Adoption Trends
• According to recent Gartner analysis*:
– 16% of server workloads are running in virtual machines
• It took approximately 6 years to get to this point
– Predicts to an increase to 50% of server workloads by the end of 2012
• To a total of 58 Million deployed virtual machines
– This does not include virtual desktop workloads
* Gartner Press Release - Gartner Says 16 Percent of Workloads are Running in Virtual Machines Today – October 21, 2009
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Virtualization Adoption Trends
• Why this rapid growth?– Shift from simple Server Consolidation to Data
Protection being the primary virtualization driver• Not all workloads need to be consolidated
• All workloads can benefit from enhanced DR processes
– Better performing hardware
– Enhanced hypervisor software
– Simplified workload provisioning
– More comfort with High-Performance workloads
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Where Does Disaster Recovery Enter?
• Organizations must have a stable virtual environment before they implement DR– If DR is a driver of virtualization, it must be considered
during infrastructure design
• DR is a “Stage 2” virtualization challenge– Not fully realized until the virtual environment is
considered “Production Ready” • Typically 6-9 months into virtualization in my experience
– Has a tendency to blindside organizations• Many organizations don’t realize how virtualization impacts
traditional backup strategies
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Obstacles to Virtualization Adoption
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Why is Backup an Obstacle?
• Backup processes and meeting backup windows has historically been a challenge in the “traditional” physical world
• Virtualization introduces new challenges to data protection and DR that didn’t exist in the physical world
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Typical Virtualization Growth
Timeline of Virtualization Deployment
Initial Adoption
3:1 Consolidation
Physical
Systems
Consolidated
Virtual Machines
3-6 Months In
VMs Double
6-9 Months In
VMs Double Again
Physical Footprint Still 3:1
Administrative Workload x 4
Storage Requirements x 4
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What Happens in High Density VM Deployments?
• What happens if the backup jobs try to run concurrently?
• How does this get scheduled?• What happens to VM
performance levels?• Are all VMs in your dev/test
environment being protected?
• Are these challenges limiting your deployment options?
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New Challenges from Virtualization
• Server capacity for backup processing– Highly efficient systems
– Processing and Disk capacity optimized from consolidation
– Rapid virtualization growth leads to more systems to protect and more data to transfer
– Backup job scheduling impacts workload performance• Parallel job processing will impact performance
• Must perform serial backup
• Scheduling challenges multiplied
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The Root Problem
• “The one time that you needed all of that server capacity was during backup.” Teneja Group
• “Traditional backup loads are a worst-case scenario for virtual servers.”Blogger
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Acronyms You Should Know
RPORTO
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Taking Advantage of Images
• What’s in an Image?• An image is a completely
encapsulated system stored as a binary file• Point-in-time copy of OS,
Applications, Data, and Configurations
• Captures running systems
• Image-based Data Protection is called Backup 2.0• No agents• Faster to capture• No disruption – no window
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Are Image-Level Backups Safe?
• Consider recoverability of Backup 1.0 to Backup 2.0– Entire system encapsulated in an image– Granular restore– Rapid recovery
• Fewer Moving Pieces– Small number of larger files vs. very large number of
smaller files– Hardware platform independence– Registry and driver issues are a thing of the past!
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Backup Methods & Opportunities
• Selective Backup of Running VMs versus Powered Off VMs
• vCenter Notes Amendment
• Test of Storage Free Space
• Support of Platform Advancements
• Utilize Multi-Tier Storage Devices on the Network
• Custom Backup Groups
• Backups at Multiple Virtualization Levels
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B2.0: Simply Better Data Protection
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What is Image-Based Protection?
• An image can be recovered on any system, anywhere –including on-premise, to cloud, and on dissimilar hardware
• Enables point-in-time DR for environments, whole systems, single files, and application objects
• Enables new levels of protection that were previously cost-prohibitive
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What is Image-Based Recovery?
• Three things are recoverable from an image:– Image (reconstituted server)– File– Object (e.g.: email)
• Files and objects can be recovered without image reconstitution
Stored
Image
Recovered
Object
Recovered
File
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Recovery Methods & Opportunities
• Hot Copy of a VM for Test and Troubleshooting
• Preserve Disk Mapping Best Practices
• Selecting Network
• Recovering a LUN-full of VMs
• Traditional Backup Agent can be Recovered as part of the VM
• Recover-As VM Renaming
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Two Methods for B2.0
Direct-to-Target Benefits:
• No Backup Servers
• No Performance Bottleneck
• Maximum Performance Throughput
for Networks, I/O, Storage
• Shortest Possible Backup Windows
• Shortest Possible Recovery Times
Direct-to-Target
Proxy-Based
SAN
Proxy-Based Benefits:
• LAN-Free Movement of Data
• Preserves SAN Investment
• Enables Sweep-to-Tape for All Data
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The Big Picture - Tiered Environment
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Best Practices for a Small Environment
• Implement image-based backups to offset traditional costs• Static servers
– Weekly or bi-weekly full image backups
• Dynamic servers– Weekly or bi-weekly full image backups– Incremental or differential daily
• Line of business servers– Weekly or bi-weekly full image backups– Incremental or differential daily– Software replication on or off-site
• Scrape Long-Term storage to tape regularly• Investigate cloud storage for Long-Term storage
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Best Practices for Mid-Sized Environment
• Consider recovery SLA requirements per workload/application• Displace traditional agents to save costs• “P2V” Disaster Recovery• Static Servers
– Weekly full image backup
• Dynamic servers– Weekly or bi-weekly full image backups– Incremental or differential daily
• Line of business servers– Weekly or bi-weekly full image backups– Incremental or differential daily– Storage array-based snapshots and replication on and off-site
• Secondary storage costs become a concern for long-term data storage
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Best Practices for Large Environments
• Consider recovery SLA requirements per application• Dynamic mix of technologies to meet defined SLAs• Infrastructure server/Tier 3 applications
– Weekly or bi-weekly full image backups
• Tier 2 applications– Monthly/bi-weekly image backups– Incremental or differential daily– Regular storage snapshots– Software replication on or off-site
• Tier 1 applications– Monthly/bi-weekly image backups– Incremental or differential daily– Regular storage snapshots– Storage-array replication on or off-site
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One Size Does Not Fit All
• Tiered Environment = Tiered Protection and Management
• SLAs Determine Your “Best Fit” Backup/Replication Methodology
• Be Creative = Virtualization Allows You to Reinvent Data Protection and Disaster Recovery