Building Practical Data Protection Strategies

8/3/2019 Building Practical Data Protection Strategies

1/17

Building PracticalData Protection Strategies

Fred Moore, Horison Inormation Strategies

August 2006

w w w . d a t a d o m a i n . c o m - 2 0 0 6

WHITE PAPER


2/17

2D a t a D o m a i n D D 4 0 0 E n t e r p r i s e S e r i e s - 2 0 0 5

D A T A D O M A I N I C o n t e n t s

The Origin O backup and recOvery 3

TradiTiOnal daTa prOTecTiOn OpTiOns 4

nexT generaTiOn daTa prOTecTiOn 8

BACKUP/RECOVERY STRATEGY COMPARISON 10

daTa reducTiOn becOMing The key 11

deduplicaTiOn redeines The Wan MarkeT 12

DEDUPLICATION CHECKLIST 11

daTa dOMain: enTerprise sTOrage prOTecTiOn 14

cOnclusiOn 15

abOuT The auThOr 16

abOuT daTa dOMain 16

Building Practical Data Protection Strategies - August 2006


3/17

D a t a D o m a i n D D 4 0 0 E n t e r p r i s e S e r i e s - 2 0 0 5

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The Origin o Backup and

Recovery

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D A T A D O M A I N I E n t e r p r i s e P r o t e c t i o n S t o r a g e

Will these traditional data protection

applications survive the demands for

ultra-high availability and the growing

requirements for nearly instantaneous

recovery in the 21st century?

TERMS USED TO CLASSIFY THE IMPACT OF DIFFERENT LEVELS OF DATA PROTECTION

RPO (Recovery Point Objective) This is the desired amount of time between dataprotection events.

RTO (Recovery Time Objective) This is the time required to recover from a data lossevent and return to service. In other words, this requires classifying data or an

application by its criticality or value to the business and determining how long thebusiness can survive without having this data available. There is immense pressureto greatly reduce the amount of time it takes to recover a le or an application.

DPW (Data Protection or Backup Window) This is the maximum amount of timeavailable for an application to be interrupted or out of service while data is copiedto another physical location for backup purposes. This time out component isseeing many new developments to reduce the amount of time needed for thetraditional backup window.



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Traditional Data Protection

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Sotware (bugs and corruption)*

Hardware*

Disk

Tape

Server

Network*

Natural disasters, power, ood, fre

Thet

Intrusion/security

Other

The Causes o Downtime and Data Loss

18%

38%

23%

7%

2%

8%

4%

Snapshots, transaction logs

RAID 1-6, backups

Backups

Clusters, ailover architecture

Redundancy

O-site acilities

Encryption

Firewalls, authentication, anti-virus,

iltering

Type o Disruption % o Failures Solutions

* Includes operational failures** Unplanned downtime (unpredictable)

Source: Estimates by Horison Information Strategies


5/17



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Backing up large amounts of unchanged

data creates a signicant amount of

unnecessarily duplicated or redundant

data.



6/17




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that mirroring does not help ott t t

For best practices, mirroring should always

be accompanied by other data protection

schemes that can permit a recovery or

restore to occur from clean data that existed

before the corruption occurred. Disk

mirroring is dened and commonly referred

to as RAID 1.


7/17




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Given the many tradeoffs and limitations in

these traditional data protection methods,

several other techniques are gaining

momentum to reduce some of the traditional

tradeoffs.


8/17




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Next Generation Data ProtectionSolutions Arrive as

Deduplication Takes Ob oto mt ot to

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VTLs are now becoming available for non-

mainframe computer systems primarily being

used as a fast disk cache.


9/17



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Deduplication can signicantly change theeconomics of storage, dramatically reducing

both backup recovery times and making Wide

Area backup a operational reality.



10/17



Full backup

Incrementalbackup

Dierentialbackup

Mirror

Snapshot

Continuous(CDP)

VTL (Virtual TapeLibrary)

Deduplication

Backup/Recovery Strategy Comparison

Straightorward process,maximum storageconsumption, can be usedon all applications

Reduces backup window,all incremental copiesused in recovery makingrecovery longer thandierential

Reduces recovery time,only last dierential copy

used in recovery makingbackup time longer thanincremental

Doubles disk costs,protects rom disk ailures,does not protect againstintrusion or corruption

Very ast, does not protectagainst disk ailures,does not protect againstintrusion or corruption,can take time to determine

the recovery point

Is oten applicationspecifc, can take time todetermine the recoverypoint, ast recovery,protects against intrusionand corruptionMature or mainrames,gaining momentum inopen systems

Very ast backup andrecovery, greatly reducesdisk storage requirementsand expense over allother methods, computeintensive requiringappliance

All datasupported

Applicationspecifc, notsupported byall applications

Applicationspecifc, not

supported byall applications

All data typessupported



All data typessupported

Applicationand backupsotwareneutral, avoidonly non-repeating datatypes

Yes

Yes

Yes

No, one-or-onecopy

No

No

Limited to tapecompressioncapabilities,signifcantly

reducesperormance

Yes, providesurther datareduction viaeliminating

redundant data

Tape

Disk, tape

Disk, tape

Disk only

Disk only

Disk only

Low-cost diskwith optional

automated tapelibrary

Disk only

Restore

Restore

Restore

Failover

Restore

Restore

Restore

Rapid Restore

Backup Scheme TradeosData Types

Supported

Data Compressed

on Backup

Standard

Storage Device

Failover or Restore

Architecture



11/17



Data Reduction is Becoming the Key

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Traditional Storage Capacity Optimized

Data

Stored

1 5 10 15 20

0

Weeks In Use

Data Volume

Reduction

Source: Data Domain, Aug 2006

Data Reduction Rates

3-4xFirst full backup

6-7xFile-level incrementals

50-60xSubsequent full backups

20x

Aggregate weekly fulls,daily incrementals

Compression Effect


B JA B C D A E F G A B H A E I C D E F G H

A B C D E F G H I J

1ST FULL BACKUP

Deduplication: Under the Hood

Redundancies pooled, compressed

2ND FULL BACKUPINCR 1 INCR 2

Source: Data Domain, Aug 2006

DATASTREAM

Unique variable segments (4KB-12KB) Redundant Data Segments Compressed Un ique Segments


12/17


13/17


Compatibility with your existingbackup applications

Appliance or sotware based solution

Sizing perormance requirements

Scalability or perormance andcapacity

Pointer security management

Supports remote replication or disasterrecovery

Pricing ft to budget

Vendor readiness and positioning

Environmental savings

Deduplication Checklist

What changes, i any, are required to your existing backupprocesses? Assess diiculty o the implementation. Areyou prepared? Certiy the backup vendor works with thededuplication solution.

Sotware-only solutions allow enterprises to re-use existingor older disk systems, appliances normally include diskstorage and simpliy installation.

Signiicant reductions in storage may require severaliterations. Determine time needed to achieve the maximumdeduplication eect. What is the net expected storagesavings compared to ull, incremental or dierentialbackups?

Assess instrumentation is provided to measure perormanceand capacity thresholds. Insure additional capacity andprocessing power be added to keep up with data growthor to improve backup and restore speeds. Veriy upgradesnon-disruptive.

Insure the pointers to the unique data segments areprotected rom hardware, sotware and intrusion threats.Losing these pointers means that the backups can no longerbe retrieved.

Data reduction not only reduces the amount o storagerequired locally but also reduces the amount o networktraic during replication, which can result in signiicantbandwidth savings or remote backup and recovery.

Do you pay or storage capacity, by number o installedsolutions, or another scheme? What are the warrantyperiod and maintenance pricing considerations? Remembernot to conuse the initial acquisition costs (Capex) and the

ongoing operational expenses (Opex) when evaluating adeduplication solution.

Check out vendor reerence installations. Veriy thevendors roadmap will address your uture data protectionrequirements.

Determine power, ootprint and acilities savings or use incost-justiication process


p o to m t mmtto o T t ow

t om oto to m t t



14/17




Data Domain:

Enterprise Storage Protectiondt dom o q o-t

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tom t, t, Data Domain Highlights

o 15

Full Backup

Incremental/dierential

Mirroring

Snapshot, CDP

Deduplication

Typical Data Reduction Rates

100%, all data backed up each time

5% or fles, 100% or databases

5%, changes absorbed into each mirror

5%, only changes stored

< 1%, eliminates redundant data and

compresses original occurrence


15/17


Reduces storage and bandwidthcosts with Data Domain 20x GlobalCompression technique

Full support or all backup sotwarepackages

Ease o operations

Continuous data verifcation

Reduces the amount o diskneeded or backup data, providesconcurrency

Eliminates redundant data neededor backup and recovery

Data Domain Highlights

Makes WAN network vaulting aordable. GlobalCompression reduces data sent to remote locationwhile protecting data over any bandwidth anddistance.

Data Domain requires no changes to existingbackup sotware providing ease o installation andongoing operations. Using a transparent approachconsolidates existing backup sotware processes.

Administrators can spend time on other importanttasks.

Ensures data can always be recovered. I anerror occurs during transer, Replication sotwarerecovers automatically and restarts data transer.

Storage expenses are reduced. Both the originatorand replicated data remain ully accessible whiletransers are in progress without impact toavailability.

Improves recovery times or local and remoteoperations.

Product Features Customer Benefts



Conclusion

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16/17




About the Author

i 1998, Moo o hoo iomto stt, omto tt ot m bo,

cooo, tt z mt tt, t omt o t iT t

21- t stoT t t tm o oot t o

stt p Mt sto eto o Wt Wo poto wtt m

o oo, t ot o t to t h 1989 t o t dt am aw

2004 t o t at s so-i-r aw t t ut o Mo w

o mtmt mt omt to o

a ot-t iT , motto wt wow, omt t b et pom 1997

h t o w t o t to two t

Moo 100 ao a, st 14

pt bo, cooo 80302

hoo iomto stt 3034179455 o

3039399159

moo@ooom

wwwooom

About Data Domain

dt dom t o o et potto sto tm o two- t o O 450 om wow dt dom w-w oto to ot

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omt wt t otw

cot 2006 dt dom, i a rt r

dt dom, i omto t to t o t to t T to o t

o to o T omto jt to wtot ot c o to t omto

; t w oot w to o t to dt dom, i m m momt /o

t ot() /o t om() t to t tm roto o t to wtot o wtt mo

o

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omto t to, m m wt o mtt o t o t o

dt dom go como tm o dt dom, i a ot , ot, m, tm, o t

m to t t ot o o t t ow


17/17

Building Practical Data Protection Strategies

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Building Practical Data Protection Strategies