© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED
Tip for Protecting
Virtualized Environments
Options. Pros an...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED2
Protecting Virtualized Environments
AGENDA
Brief history of...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED
Virtualization
Types of Virtualization
 Hardware - VM/370, ...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED
Media
Head, Cylinder, Sector number
Volume
Block number
Back...
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File vs. Image Backups
File-system Backup:
full + file-grain...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED
Strategies for Backing Up Virtualized Environments
Option 1:...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED7
Pros and Cons of Image Backups
IMAGE BACKUP DETAILS
WD CONF...
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Pros and Cons of Image Backups
IMAGE BACKUP DETAILS
WD CONF...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED9
The Evolution of VMware Backups
YOU MUST ADAPT TO TAKE ADVA...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED10
Current Backup Options for Popular Hypervisors
BACKUP TYPE...
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Off-Site Storage Alternatives
THE ONLY RELIABLE BACKUP IS ...
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Tape or Hybrid Cloud?
OFFSITE OPTIONS
WD CONFIDENTIAL
Back...
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Protecting Physical AND Virtual Environments
SIMPLIFYING B...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED14
Deploying Backup Servers as Virtual Appliances
ALL-IN VIRT...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED15
Agent-less Backups of VMware Hypervisors
VIRTUAL BACKUP AP...
© 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED16
WD Progression
Western Digital Markets, Channels, and Prod...
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Network Backup for Business Since 1999
WD Arkeia Product O...
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WD Arkeia™ v10 Architecture
WD Arkeia Product Overview
Sto...
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WD Arkeia Appliance – Tech Specs
WD Arkeia Product Overview
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Please Contact Us
WDBusinessStorage@wdc.com
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3 Surprising Ways Virtualization Has Changed Best Practices in Backup

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1. Options for backing up virtual machines, and restoring full images or individual files.
2. Backup capabilities of each of the popular hypervisors.
3. Techniques for moving backups of virtual environments off-site.
4. Strategies for implementing incremental backups.
5. The pros and cons of integrating physical platform and virtual platform backups.

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  • Today, when people talk about virtualization, they’re generally talking about “hardware virtualization”, as distinct from OS or application virtualization. This virtualization has been around for a long time, but has recently come back into fashion.You might ask “why”? Hardware virtualization has been applied for several, distinct reasons:Early on, in the 1970s, computer hardware was very expensive. “Time-sharing” was conceived as a way to share computers across multiple users. With the advent of microprocessors in the 1980s, computers became much cheaper and this motivation waned.More recently, virtualization was applied to the problem of rapid environment changes—first among groups that did test and QA, but later for people that wanted to implement solutions for high-availability and disaster recovery.Today, “server consolidation” has become the rallying cry for virtualization as the computational power of CPUs outstrips the requirements of most applications.Even if your data live in virtualized environments, you need to be able to protect it. Today, generally two options are employed for backing up virtual environments.1. Treat the virtual machines as
  • For backup, virtualization provides several benefits.1. The fastest backup, today, is an “incremental” backup. Doing these incremental backups on whole files loses the speed advantage as files get bigger. So, block-grain is faster than file-grain, especially for large files. And files are getting larger as applications that use large files proliferate. Examples are Powerpoint, Outlook, Exchange, and databases. For example, if the file on disk is small (in green), then backing it up again if any part changes is OK. But if the file on disk is large (in green), and only a small part changes, backing it up is expensive. The solution is to back up only the changed part (in red). Later in this presentation, we’ll talk about block-grain backup of “files” rather than “images”. The next three benefits make backups easier to manage.2. One challenge for disaster recovery of systems is having a machine to which the DR image can be restored. Not only must the architecture of the machine be the same, but all the operating system’s hardware and device drivers must remain the same. This is unusual for platforms across different manufacturers or across different generations. Virtualization eases these restrictions, requiring only the same microprocessor architecture--typically x86.3. A major issue for backing up files is how to deal with “open” files where what is written to disk may not be internally consistent and from which a file cannot be recovered. A third benefit for backups made possible by virtualization is that most hypervisors, including Vmware, offer a snapshotting file system. This means that a backup can still happen even if a file is “open”. What the backup server sees is a file in a consistent state—the state it was in when the file was opened for writing.4. A fourth benefit for backups is that some Backup Servers can be deployed as virtual appliances, bringing the benefits of server consolidation to Backup Server. Backup Servers are a particularly good fit for server consolidation from the perspective that they are often used only during a small window at night. Why dedicate a machine to this function? Analysts at IDC have introduced the concept of a “Hyper-Box”, where applications are deployed on a hypervisor only as virtual appliances. Applications are only distributed with an operating and no installation is required. They are simply “launched” on a hypervisor from the OVF file format.
  • For backup, virtualization provides several benefits.1. The fastest backup, today, is an “incremental” backup. Doing these incremental backups on whole files loses the speed advantage as files get bigger. So, block-grain is faster than file-grain, especially for large files. And files are getting larger as applications that use large files proliferate. Examples are Powerpoint, Outlook, Exchange, and databases. For example, if the file on disk is small (in green), then backing it up again if any part changes is OK. But if the file on disk is large (in green), and only a small part changes, backing it up is expensive. The solution is to back up only the changed part (in red). Later in this presentation, we’ll talk about block-grain backup of “files” rather than “images”. The next three benefits make backups easier to manage.2. One challenge for disaster recovery of systems is having a machine to which the DR image can be restored. Not only must the architecture of the machine be the same, but all the operating system’s hardware and device drivers must remain the same. This is unusual for platforms across different manufacturers or across different generations. Virtualization eases these restrictions, requiring only the same microprocessor architecture--typically x86.3. A major issue for backing up files is how to deal with “open” files where what is written to disk may not be internally consistent and from which a file cannot be recovered. A third benefit for backups made possible by virtualization is that most hypervisors, including Vmware, offer a snapshotting file system. This means that a backup can still happen even if a file is “open”. What the backup server sees is a file in a consistent state—the state it was in when the file was opened for writing.4. A fourth benefit for backups is that some Backup Servers can be deployed as virtual appliances, bringing the benefits of server consolidation to Backup Server. Backup Servers are a particularly good fit for server consolidation from the perspective that they are often used only during a small window at night. Why dedicate a machine to this function? Analysts at IDC have introduced the concept of a “Hyper-Box”, where applications are deployed on a hypervisor only as virtual appliances. Applications are only distributed with an operating and no installation is required. They are simply “launched” on a hypervisor from the OVF file format.
  • 3 Surprising Ways Virtualization Has Changed Best Practices in Backup

    1. 1. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED Tip for Protecting Virtualized Environments Options. Pros and Cons.
    2. 2. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED2 Protecting Virtualized Environments AGENDA Brief history of virtualization Strategies for backing up virtualized environments Options for protecting popular hypervisors Getting backups off-site 1 2 3 4 Pros and cons of integrating backups of physical and virtual machines5 Deploying backup servers as virtual appliances6
    3. 3. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED Virtualization Types of Virtualization  Hardware - VM/370, ESXi, Hyper-V  Operating system - UNIX, Windows  Application - Java, Smalltalk Uses of Hardware Virtualization  Hardware is expensive  Rapid platform changes  Hardware outstrips software
    4. 4. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED Media Head, Cylinder, Sector number Volume Block number Backup Level Alternatives File-System Application File name and byte offset
    5. 5. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED File vs. Image Backups File-system Backup: full + file-grain incremental Volume Backup: full + block-grain Incremental Virtualization Backup Options  Option 1: File-System Backups • File-grain incrementals  Options 2: Volume Backups • Block-grain incrementals Why Not Block-Grain for Files?
    6. 6. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED Strategies for Backing Up Virtualized Environments Option 1: File backups via agents on guest OSs Option 2: Volume backups via hypervisor agents Option 3: Volume backups without hypervisor agent  First available from VMware in ESX v3.0  VMware uses vStorage APIs for Data Protection (VADP) hypervisor OS A OS C OS B Backup Agent
    7. 7. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED7 Pros and Cons of Image Backups IMAGE BACKUP DETAILS WD CONFIDENTIAL Pros  Can be fast in cases of incremental backups (aka Changed Block backups)  Accelerates disaster recovery Cons  Can be slow compared to “surgical” file backups  Can generate large backup files compared to “surgical” file backups  Can’t ensure data-consistent backups for all types of apps/dbs
    8. 8. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED8 Pros and Cons of Image Backups IMAGE BACKUP DETAILS WD CONFIDENTIAL Mitigating factors  Dedupe eliminates OS redundancy across multiple VM images  Dedupe “grain” can be much finer than “changed block” grain  Dedupe shrinks storage volumes of backups, even with incremental backups Changed block Dedupe block Virtualmachinediskimage
    9. 9. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED9 The Evolution of VMware Backups YOU MUST ADAPT TO TAKE ADVANTAGE OF NEW TECHNOLOGIES Starting with VMware… Perform backup with… Since the beginning… Backups Agents on each guest OS …aka traditional backup agents ESX Backup Agent deployed on ESX hypervisor …aka “console backups” ESX VMware Consolidated Backup (VCB) …aka backups using a proxy server ESX v3 vStorage APIs for Data Protection (VADP) …aka “agent-less backups”
    10. 10. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED10 Current Backup Options for Popular Hypervisors BACKUP TYPES VARY ACROSS HYPERVISORS Hypervisor Backup Type Backup Options Backup Types VMware v5.X Image or file “Agent-less” Image Backups Full, Differential, Incremental Hyper-V 2012 Image or file Console Image Backups Full XenServer 6.1 Image or file Console Image Backups Full RHEL 3.1 File only File Backup Agents on each guest OS Full, Differential, Incremental Parallels Cloud Server 6 Image or file No API; scripts generate Image Backups Full
    11. 11. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED11 Off-Site Storage Alternatives THE ONLY RELIABLE BACKUP IS AN OFF-SITE BACKUP Store backups off-site Alternatives  Move media by truck  Backup from agent  Replicate from server How to choose?  Costs  Fixed  Variable  Backup window  Time-to-restore (RTO)  Reliability  Convenience Backup Agent Backup Server Backup Agent Backup Agent Backup Agent Backup Agent Backup Agent Backup Server Backup Agent Backup Server Backup Agent Backup Agent Backup Server “Cloud Backup” “Tapes on Trucks” “Hybrid Cloud Backup” Fixed Costs Variable Costs Backup Window Time to Restore High Low Short Short Low High Long Long Low High Short Short
    12. 12. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED12 Tape or Hybrid Cloud? OFFSITE OPTIONS WD CONFIDENTIAL Backup to tape requirements  Tape drives  Tape autoloaders  Tape libraries  D2T  D2D2T Hybrid cloud requirements  Moving the first backup……….(“Seed and Feed”)  Moving nightly incremental backups………. (WAN transfer)  Restoring a single file………. (WAN transfer)  Restoring a full backup………. (“Seed and Feed”)
    13. 13. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED13 Protecting Physical AND Virtual Environments SIMPLIFYING BACKUP WD CONFIDENTIAL Integrated Backup Solutions: What?  Protect physical and virtual machines Integrated Backup Solutions: Why Important?  Simplify backup management  Accommodates applications / databases that cannot be “quiesced”  Protect multiple types of hypervisors  Gives flexibility to address special situations (e.g. data sets smaller than VM) Mainstream Backup Vendors Support Physical + Virtual  Virtual servers are only latest “wrinkle” to be accommodated by backup  Past “wrinkles” include • Disk targets • Hot backups • Deduplication • Hybrid cloud backup  Demonstrates capability to accommodate future changes in backup
    14. 14. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED14 Deploying Backup Servers as Virtual Appliances ALL-IN VIRTUAL WD CONFIDENTIAL Pros  Eliminates hardware that is only lightly used (e.g. nightly backups)  Offers application failover to protect against hardware failure  Fast and easy to deploy and configure Cons  Backup servers using dedupe can be hardware-intensive  Many administrators prefer dedicated, if not isolated, backup servers
    15. 15. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED15 Agent-less Backups of VMware Hypervisors VIRTUAL BACKUP APPLIANCE PROTECTING MIXED PHYSICAL/VIRTUAL Application Operating System Application Operating System App OS App OS App OS App Operating System Hardware WD Arkeia Backup Agent … Virtual Infrastructure Physical Infrastructure WD Arkeia Virtual Appliance
    16. 16. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED16 WD Progression Western Digital Markets, Channels, and Products Storage Components Consumer Storage Solutions Business Storage Solutions Direct Retail VAR OEM Consumer SMB Started in 1988…#1 Started in 2007…#1 Started in 2011…
    17. 17. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED17 Network Backup for Business Since 1999 WD Arkeia Product Overview Backup Servers as  Software Application  Physical Appliance  Virtual Appliance Key technology for fast backups  Patented Progressive Deduplication™  Multi-flow  Seed and Feed™ Key technology for ease of use  Web UI  Disk, Tape, Cloud targets  Broad platform support (243 physical and all major virtual environments) Key technology for affordability  Backward compatibility of server to *all* previous versions of agents reduces cost of upgrades  Single solution for both physical and virtual environments  No per agent fees for file-folder backup (or per-CPU or per-core fees) Click here for WD Arkeia datasheets and customer success stories! Watch “Tips for better data deduplication” webinar recording to learn more!
    18. 18. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED18 WD Arkeia™ v10 Architecture WD Arkeia Product Overview Storage devices Disk, Tape, Cloud Backup Agent Backup Agent Backup Agent Backup Agent Backup Server Backup Server… Backup Replication Backup ReplicationBackup Replication Server Software Backup Agents Encryption Disaster recovery Appliance Virtual appliance Virtual- ization Bundle VMware Hyper-V Microsoft Bundle SQLServer ActiveDirectory SharePoint Exchange Graphical Web Administration Command-line Administration Lotus DB2 Oracle Data- Center Bundle Backup Servers on any of 130 Linux platforms Capacities of 4TB to 48TB disk and tape drives VMware ESX and ESXi hypervisors Any target: Disk storage: file or block; Tape: 600+ drives/libraries; Cloud: public or private Premium Bundle GroupWise eDirectory PostgreSQL LDAP MySQL FilesFolders Progressive Deduplication File and folder backup on 200+ platforms: Linux, Windows, Macintosh, AIX, HP-UX, Solaris Novell, BSD Progressive Deduplication: Source or Target Side
    19. 19. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED19 WD Arkeia Appliance – Tech Specs WD Arkeia Product Overview
    20. 20. © 2013 WESTERN DIGITAL TECHNOLOGIES, INC. ALL RIGHTS RESERVED Please Contact Us WDBusinessStorage@wdc.com www.arkeia.com

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