21st century backup what’s new in backup technology
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21st Century Backup:Whats New in Backup Technology
Lauren Whitehouse
Senior Analyst, ESG
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How Did We Get Here?
Data Protection Goals
Mitigate risk
Prevent business disruption and financial loss
IT continuity
Return systems, applications and data to their most
recent and consistent state before the interruption
Meet SLAs
Restore business operations within pre-established
timeframe
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How Did We Get Here?
Day-to-day Challenges
Time
Cost
Risk Growth in the volume
of data toback up and recover
impacts all three
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LTFS
How Did We Get Here? Evolution of Backup
Standaloneworkstationbackup to
direct-attached SCSI
tape drive
Server-basedbackup
Opensystems tapeautomation
LANbackupwith
sharedtape device
Storage
AreaNetworks,Fibre
Channel
Backup todisk open
systemsVTL
interface
SATA disk
= lowersdisk-basedbackupcosts
Deduplicationtarget devices
Deduplicationas a feature ofbackup
applications
Virtual
machinebackup viaimage-levelbackup andsnapshot
Softwareas a Service(SaaS)
Cloudstorage
tiers
ContinuousData
Protection(CDP)
SLA-centricbackup
administration
Network-attachedStorage(NAS)
SAN snapshot &replication-
driven backup
Integratedrecoveryplatforms
1980s
1990s 2010s
2000s
Internet
Server Virtualization
Local backup only
Disk capacity exceeds tapecapacity
Centralizes backup at the server
Data exceeds the size of a singletape cartridge
Open systems tape automation
enables unattended backup for aweek
Central backup server enablesresource/media sharing
Simplifies administrationIntroduces scale
But it creates LAN traffic andelongates backup
NAS allows networked servers toshare storage space with
networked clients
Contributes to data growth
SANs provide high-speed network ofstorage
Improves resource utilizationImproves backup/recovery performance
Eases congestion on LAN
Emulating tape on disk enablesseamless integration of disk in
backup processes
Accelerates backup & recovery
Disk enables new data capturetechniques
CDP captures multiple recoverypoints, improving both RPO &
RTO
Deduplication in storage systemseliminates redundancy changes
the economics of disk-basedbackup
Lower-cost disk expands D2D andD2D2T backup
Penetration of broadband Internetaccess and bandwidth
optimization makes SaaS feasible
Deduplication becomes morepervasive in backup applications
Source-side deduplicationprovides end-to-end efficiency
Backup vendors mix capturemethods with disk & tape via
single policy engines/interfaces todeliver tiers of RTOs/RPOs
Server virtualization breaks
traditional backup approaches
Alternative capture techniques(image-level backup, CDP,
Snapshot) gain
Cloud-based storage tier rivalstape as off-site, long-term
retention medium
Non-traditional data protection atthe storage system gaining in
popularity
Policy-driven data protection determination of capture
technique, frequency, and copys
destination automaticallydetermined by recoveryobjectives
File Storage & IP Network Growth
Linear Tape File System (LTFS)
works in conjunction with LTO5tapes and libraries; making dataon tape as easy to access as data
on disk
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Where Are We Now?2011 Top IT Priorities
1. Increase use of server virtualization
2. Manage data growth
3. Information security initiatives
4. Major application deployments or upgrades
5. Improve data backup and recovery
6. Desktop virtualization
7. Data center consolidation
8. Business continuity / disaster recovery programs
9. PC refresh
10. Regulatory compliance initiatives
11. Improve collaboration capabilities
12. Increase use of cloud computing Source: ESG Research Report, 2011 IT Spending Priorities,January 2011.
Mitigate risk
Reduce costs
Save time
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Todays MegaTrends
Diminishing levels of downtime tolerance
Managing data growth
Virtualization
Cloud
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Diminishing Levels of
Downtime Tolerance
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Diminishing Levels of Downtime Tolerance
18%
35%
21%
15%
4% 4%3%
5%
15%
27%
24%
15%
12%
3%
5%
8%
13%15%
17%
22%20%
0%
5%
10%
15%
20%
25%
30%
35%
40%
None Less than 1
hour
1 hour to 3
hours
3 hours to 10
hours
10 hours to 24
hours
1 day to 3 days More than 3
days
Indicate the amount of downtime your organization can tolerate before you
experience significant revenue loss or other adverse business impact.
(Percent of respondents, N=510)
Tier 1 data Tier 2 data Tier 3 data
53% of respondents cite downtime toleranceof 1-hour or less for tier-1 data
Source: ESG Research Report, Data Protection Trends, April 2010.
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Accelerating Backup & Recovery
Backup Server
DR Site
PhysicalTape Library
Production Servers
WAN
Cloud
DataCenter
Snapshot &Replication Dedupe Appliances
VTL
SecondaryStorage
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Optimizing Backup
80% of companies have optimized the back end of
the backup process by leveraging disk in D2D, D2D2T
& D2D2C configurations
Optimizing the front end of the process is now the
focus
Image-level backup
Snapshot capture
More recovery points and full system recovery help
improve RPOs/RTOs
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Optimizing the Front End
Native array-based snapshots
Image-level backup
Native system-/hypervisor-based snapshots
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New Capture Methods Drive Disk Use
Greater adoption of replication & CDP
52% of survey respondents use snapshot today vs. 47% in2008
31% use CDP today vs. 13% of respondents in 2008
Snapshot & CDP more likely to replace traditional backup
23% electing snapshot to replace file-level backup
14% of organizations electing CDP to replace file-level
backup
18% replacing backup with a combination of snapshot & CDP
Source: ESG Research Report, Data Protection Trends, April 2010.
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Array-Based Snapshot Integration with Backups
Reduces complexity no scripting
Application-specific recovery
Single management console
Catalog integration rapid search/recovery
Integrated policy engine for lifecycle management
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Managing Data Growth
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Managing the Data Deluge
54%
38%
9%
16%
36%
49%
32% 36% 31%
0%
10%
20%
30%
40%
50%
60%
10 TB or less 11 TB to 100 TB More than 100 TB
What is your immediate organizations approximate total volume of data stored on
corporate servers and storage systems? (Percent of respondents)
Midmarket (100 to 999 employees, N=199) Enterprise (1,000 or more employees, N=258) Total (N=457)
Nearly 50% of enterprises cite>100 TB of data volume
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Managing the Data Deluge
20%
42%
23%
9%6%
9%
28%
24%
9%
30%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
1% to 10% annually 11% to 20% annually 21% to 30% annually 31% to 40% annually More than 40%
annually
At approximately what rate do you believe your total volume of data is
growing annually? (Percent of respondents)
100 or fewer servers (N=247) More than 100 servers (N=246)
30% with >100 servershave >40% growth/year
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Storage Spending Priorities
8%
9%
9%
12%
14%
15%
15%
17%
17%
18%
18%
21%
21%
23%
24%
36%
0% 5% 10% 15% 20% 25% 30% 35% 40%
Increase use of flash-based SSDs
Unified storage systems
Converged data and storage networking
Storage encryption solution
Advanced file storage / file system technology for rapidly-
Purchase new NAS storage systems
Tape replacement
Use cloud storage services as way to source storage capacity
Tiered storage
Purchase more power-efficient storage hardware
Data reduction technologies
Storage virtualization
Improved storage management software tools
Purchase new SAN storage systems
Data replication solution for off-site disaster recovery
Backup and recovery solutions
In which data storage areas will your organization make the most significant investments
over the next 12-18 months? (Percent of respondents, five responses accepted, N=289)
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Financial benefits
Reduce disk costs; delay
capital expenditures
Lower bandwidth costs
Reduce power & cooling
costs
Tape replacement savings
Operational benefits
Reduce operational overhead
in backup
Reduces time and resource
needs for recovery
Business benefits
Increase retention periods
Improve recovery objectives
Improve backup
consolidation from ROBOs
Improve DR
Deduplication Creates Efficiencies in D2D Backup
BackupDisk
DeduplicationIn Backup
ProcessProduction
Data
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Dedupe ApproachesSoftware-Based
Content-aware; dedupe can bepolicy-based
Can be more cost-effective
Flexibility in disk selection
End-to-end bandwidthefficiency; remote site backup
Global dedupe
Simplified management single
console, policy engine
Can extend to tape
Hardware-Based
Multiple backup vendorenvironments
No impact on application
performance
Optimized replication
Scalability of some solutions may
cause disruptive upgrades or
dedupe islands
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Before Seeking Out Solutions
Understand your needs
Capacity and throughput requirements/planning
Full backup size; incremental backup size
Number of full/incremental backups per week
Change rate of data
Projected growth rate Retention policies
Full backup window
Offsite copy window
Performance requirements
Requirements for offsite copies
Budget
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Virtualization
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Businesses Embrace Virtualization
Yes, we are
currently using
server
virtualization,
61%
We have not yet
deployed server
virtualization but
we plan to do so,30%
We have not yet
deployed server
virtualization and
we have no current
plans to do so,
9%
Is your organization currently utilizing a server virtualization solution?
(Percent of respondents, N=304)
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Top Virtualization Priorities
7%
16%
19%
20%
22%
23%
31%
34%
43%
47%
50%
0% 10% 20% 30% 40% 50%
Evaluate alternative hypervisor solutions/vendors
Purchase next-generation physical server infrastructure to
Move more applications from test/development to
Implement virtual machine mobility / HA (high availability)
Increase consolidation ratios (i.e., number of virtual
Improve tools and processes for managing virtual
Increase security of virtual server environment
Improve backup and recovery of virtual machines
Make use of virtual machine replication for disaster recovery
Expand number of applications running on virtual machines
Consolidate more physical servers onto virtualization platforms
Which of the following would you consider to be your organizations top server
virtualization initiatives for 2011? (Percent of respondents, N=161, 5 responses accepted)
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Non-Traditional Capture in Virtualized Environments
Primary Method of Backing Up Virtual Machines
Source: ESG Research Report, Data Protection Trends, April 2010.
Method
By number of production
servers
Less
than 25
(N=15)
25 to
100
(N=70)
More
than 100(N=99)
Backup agents in virtual machines 31% 26% 31%
Storage systems data protection features 38% 21% 18%Backup agent installed in host OS 8% 15% 16%
Custom scripts 0% 12% 11%
Agentless backup (image-level backup) 8% 8% 10%
Leverage snapshot capabilities native to the
hypervisor in conjunction with backup software0% 9% 10%
Leverage snapshot capabilities in the backup
software15% 9% 4%
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Virtual Machine Backup/Recovery Challenges
Resource contention
Non-virtualized servers benefit from dedicated andunderutilized resources
Virtualized servers share available physical resources,improving utilization
Simultaneous resource-intensive processes on a physical
host could impact the pool of virtual workloads sharingcommon resources, causing performance issues
VM disk image files are active
Must be quiesced before backup
Growth in data volume
VM image files increase the amount of data backed up andtransferred over the network due to proliferation andredundancy
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File-/Application-Level Backup
Backup agentinstalled in VM
Backup Mode Files and application objects
Backup Process Typically requires an VM-residentagent to locate and back up
files/applications.
Recovery Mode File-level or application object only
Recovery Process Re-install OS, applications onreplacement hardware, and then
recover dataAdvantages Familiar method like physical
environment backup
Facilitates single-step file-level
recovery and transaction-consistent
recovery for applications
Disadvantages Potential for resource contention ofhosts shared resources
No BMR-like recovery of whole VM
Requires agent in guest OS
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VM-Level Backup via Proxy (VMware)
Mount
Snapshot
Backup agentInstalled on
backup proxy virtual or physical
Backup Mode VM disk image
BackupProcess
Uses hypervisor API to capture point-in-time snapshot of VM
Recovery Mode Whole VM (like BMR)Single-step individual file and/or
application object recovery depends on
capabilities of backup application
RecoveryProcess
Recover VM image to a proxy, and thenrecover one or more files
Advantages Non-disruptive to the virtual machine-resident applications
Wont overwhelm the hosts CPU
Eliminates backup window
Eliminates need for an agent in every VMFull VM recovery enabled
Disadvantages Requires a virtual or physical proxyserver on the network
Requires networked storage
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Image Backup
Backup agent
installed in VMOR
Backup agentinstalled in
host OS
Backup Mode VM disk image
Backup
Process
Uses hypervisor API to capture point-in-
time snapshot of VM
May or may not require a backup agent onthe host or guest OS to facilitate backup
Recovery Mode Whole VM (like BMR)
Single-step individual file and/or
application object recovery depends on
capabilities of backup application
RecoveryProcess
Recover a VM image to a virtual or physicalmachine; recover one or more files
Advantages Non-disruptive to the virtual machine-
resident applications
Wont overwhelm the hosts CPU
Eliminates backup window
Eliminates need for an agent in every VM
Full VM recovery enabled
Disadvantages
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SAN Snapshot BackupBackup Mode VM disk image or VM datastore
Backup Process SAN-based snapshot
May use an agent on physical system toprovide visibility
May or may not be application consistent
Recovery Mode Whole VM
Single-step file &/or application object
recovery depends on software capabilities
RecoveryProcess
Select desired recovery point stored on diskand restore VM
Advantages Non-disruptive to the virtual machine-
resident applications
Eliminates backup window
No need for proxy server
Full VM recovery enabled
Can streamline remote replication
Disadvantages Can be unreliable if not configured properly
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Optimization of VM Backup/Recovery
Reduce the load on VMs
Accelerated backup via VM-level capture
Transfer less data
BLIB
Deduplication
Read/write directly from/to VM storage
VM-level backup with file-level restore
Rapid recovery via volume-level restore
Auto-discovery of unprotected VMs & auto-assignment
of policies
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Physical and Virtual Machine Protection
55%
44%
1%
22%
74%
4%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Use separate backup applications
for virtual and physical server
environments
Use a single backup application for
virtual and physical server
environments
Dont know
What is your organizations current approach to protecting its virtual and physical servers?
What do you believe would be your organizations preference for protecting its virtual and
physical servers? (Percent of respondents, N=186)
Current approach Preferred approach
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Cloud Services
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Cloud Services
Cloud computingclimbs from 22 out of 24 in 2010to 12 out of 24 in 2011
SaaSclimbs from 24 out of 24 in 2010to 14 out of 24 in 2011
Top IT Spending Priorities Ranking Comparison 2011(N=611)
2010(N=511)
Increase use of server virtualization 1 1
Manage data growth 2 4
Information security initiatives 3 2
Major application deployments/upgrades 4 5
Improve data backup and recovery 5 3
Desktop virtualization 6 10
Data center consolidation 7 6
Business continuity/disaster recovery programs 8 7
Large-scale desktop/laptop PC refresh 9 8
Regulatory compliance initiatives 10 9
Improve collaboration capabilities 11 12Increase use of cloud computing services 12 22
Business intelligence/data warehouse initiatives 13 16
Applications delivered via SaaS model 14 24
Increase use of IT outsourcing 15 17
Mobile workforce deployment 16 20
Major database deployments/upgrades 17 11
Deploying applications on mobile devices 18 21
Reduce data center power/cooling requirements 19 15
Deploy unified communications/VOIP 20 13
Enterprise content management/document management 21 14
Deploy integrated computing platform 22 19
Implement IT governance framework 23 18
New data center construction 24 23
Increase use of cloud computing services 12 22
Applications delivered via SaaS model 14 24
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Current & Future SaaS Use
44%
26%
13%
5% 6%
4% 1%
14%
25%
19%16%
13%11%
3%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
Less than 10%
of applications
10% to 20% of
applications
21% to 30% of
applications
31% to 40% of
applications
41% to 50% of
applications
More than 50%
of applications
Dont know
Of all the applications used by your organization, approximately what percentage is
currently delivered via the SaaS model? How do you expect this to change over the
next 36 months? (Percent of respondents, N=208)
Percent of applications that are delivered via SaaS today
Percent of applications that will be delivered via SaaS 36 months from now
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Cloud Repositories for Offsite Backup Storage
37%
19% 17%
9%12%
6%
34%
21%
13%11% 11% 10%
0%
5%
10%
15%
20%
25%
30%
35%
40%
On-site internalserver storage
On-site externaldisk-based storage
system
On-site tape (i.e.,accessible tape)
Off-site disk Off-site tape Off-site third-party service
provider storage
(i.e., SaaS, cloud
storage)
Total volume of backup data currently stored on each storage media type today &
expected in 2012? (Percent of respondents, N=560)
Percent of backup data on each media type 2010
Percent of backup data on each media type 2012
+39 %-14%
-33%
+13%
-9%
+18%
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Challenges with On-Premises Data Protection
Infrastructure capital expenses
Ongoing operational expenses related to staff,environmentals, media costs/transport/off-site
storage
Effectively protecting edge data
Issues with creating/moving/storing off-site copies
for DR and/or long-term retention
Keeping pace with technology upgrades and change
events
Meeting compliance requirements and SLAs
fl k l d
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Factors Influencing Backup to Cloud
16%
17%
17%
24%
25%
27%
28%
29%
32%
37%
0% 5% 10% 15% 20% 25% 30% 35% 40%
Facilitates chargeback to internal business units
Ability to eliminate on-site backup hardware and software
Offload regulatory compliance requirements to a service
provider
Service allows us to take advantage of advanced technology
More cost-effective than in-house solutions and processes
Improved support for remote office/branch office locations
Predictable costs (i.e., simpler budgeting)
Improved service levels
Better management/reporting capabilities
Ability to store data remotely for disaster recovery
Which of the following factors were most responsible for your organizations decision to utilize an
online backup service? (Percent of respondents, N=75, multiple responses accepted)
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Cloud Services Models for Backup
SaaS outsource backup completely Bandwidth determines data set sizes
Best use cases: ROBOs, endpoint devices
Cloud storage off-site and/or long-term retention in
cloud repository Potential tape replacement strategy
Cloud storage & compute create cloud failover point
P2V/V2V disaster recovery
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Summary
Data growth and innovation is driving greater use of
disk in data protection
Innovation shift from back-end to front-end optimization in
backup
IT organizations using combinations of disk, tape &
cloud tiers for data protection
Greater use of cloud computing & SaaS will result in backup being
out-tasked to service providers hosting the data
Virtualization is a change event creating
opportunities for next-generation data protection
Single solution for physical and virtual backup is preferred
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Thank you.
Lauren WhitehouseEmail: [email protected]
Blog: www.dataprotectionperspectives.com
Twitter: @lauwhitehouse
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Question?
Audience Response
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21st Century Backup:Whats New in Backup Technology
Lauren Whitehouse
Senior Analyst, ESG