6. jason phippen - veritas

7/28/2019 6. Jason Phippen - Veritas

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VERITAS Confidential

Disaster Recovery – Beyond

Backup

Jason Phippen – Director Product and

Solutions Marketing, EMEA




Agenda

• Disaster Recovery Concepts• Backup – Last Line of Defence

• Enhancing Backup with Replication

• Remote Site Replication and Mirroring• Clustering for Disaster Recovery

• Questions




• Recovery Point Objective (RPO) –

Point in time to which applications data must be recovered to resumebusiness transactions

• Recovery Time Objective (RTO) –

Maximum elapsed time allowed before lack of business function severelyimpacts an organization

Disaster Recovery Concepts

Days MinsHrsWks Secs

Recovery Point

Mins DaysHrsSecs Wks

Recovery Time




• How much data loss can you endure?

Recovery Point Objective (RPO)

Tape Backup w/

Offsite Vaulting

Replication

Mins DaysHrsSecs WksDays MinsHrsWks Secs

Recovery Point Recovery Time




• How much downtime can you endure?

Recovery Time Objective (RTO)

Recovery from Tape

Geographic Clustering

Mins DaysHrsSecs WksDays MinsHrsWks Secs

Recovery Point Recovery Time




• “Far Enough” away

– How far away from the main site? – What resources should it have?

• Site Strategies (Hot, Warm, Cold)

• Considerations

– Fault zones – Flood plains

– Power grids

– Climate zones

– Locality relative to other sites

(e.g., airport) – Remote customers and employees

Choosing a Recovery Site




Backup – Your last line of Defense

• Redundant systems replicate user errors, virusesand data corruption

• System or component redundancy (RAID,

mirroring) cannot replace backup

• Backup tapes may represent the last valid copy

of data

• Backups are your last line of defense against

total data loss




Enhancing Backup with

Replication




• Replicating the Backup Catalog server

– Shave hours off a tape restore strategy

– No need to re-catalog tapes

– No need to rebuild the backup/restore server

– Tape restores can begin immediately

Backup Tape Copies

Sent to Offsite

Site A Site B

Backup

Clients

Backup

Master/Media

Server

Replicate Backup Catalogs

Replication-enhanced Backup




Remote Site Replication and

Mirroring




Replication and Mirroring

Key Requirements… • Must be “far enough” away

• No windows of datacorruption at secondary

Synchronous

Asynchronous

Recovery Point

MinutesDays Hours SecondsWeeks




4

1

2

3

Strengths

• Maximum data currency (RPO)

• Data available immediately at secondary (RTO)

Weaknesses

• Potential to impact application performance

• Data writes lag by network latency

• Write commit latency across nodes

Primary Site Secondary Site

Synchronous Replication




Strengths

• Maximum performance

• May have less application impact

• Data available immediately at secondary (RTO)

Weaknesses

• Secondary may lag primary (RPO)

• Potential for data corruption

(not a weakness for VERITAS)

2

1

3

4

Primary Site Secondary Site

Asynchronous Replication




Secondary Site

Application

Volume Manager

SAN Fabric

• Lower hardware costs

– Groups physical disks into logical volumes

– Hardware Independence,

• Greater IT productivity

– Simplified administration of heterogeneousenvironments

– Proactive management of applications• Increased application ROI

• Can mirror over SAN distances

Primary Site

Logical Volume ManagementRemote Mirroring




Clustering for Disaster

Recovery




Campus / MAN Disaster Recovery WAN Disaster Recovery

Clustering for Disaster Recovery

WAN

Clustering, Replication, Global Clustering

MAN

Clustering ,

Replication

Clustering,

Remote Mirroring

OR




Campus / MAN Disaster RecoverySt-r-e-t-c-h Cluster Over A SAN

* Distance may varydepending upon

infrastructure




Global Clustering

• Geographically dispersed sites linked by public carrier wide areanetwork

• Each site aware of the configuration and state of all of the sites

• Direct site level migration in event of catastrophe

• Global Availability Management

• Single point of monitoring and administration




Replication

Site Migration

Wide Area Availability

Application

ClusteringGlobal

Clustering

Application

ClusteringGlobal

Clustering

Application

ClusteringGlobal

Clustering

Failover




VERITAS

Cluster Server

Volume Manager/

Foundation Suite

NetBackup/

Backup Exec

VERITAS Global

Cluster Manager

VERITAS Volume

Replicator

- NetBackup Vault

- BMR / IDR

Local Multi-site

A v a i l a

b i l i t y R e q u i r e

m e n t s

VERITAS: Uniquely Qualified (HA and DR)




Questions

6. jason phippen - veritas

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