SES314. Availability %Downtime / Year Downtime / Month Downtime / Week 99%3.65 days7.20 hours1.68 hours 99.9%8.76 hours43.20 minutes10.10 minutes.

SharePoint Business Continuity Management

Neil Hodgkinson SES314

Neil HodgkinsonPre-MicrosoftCSC SharePoint Specialist – 5 YearsProcess Chemist (Drugs, Poisons and Explosives) – 3 Years

Microsoft (2005-)SharePoint PFE - 5 YearsSharePoint Service Engineering O365 - 3 YearsSharePoint Product Group - CurrentOffice 365 CAT Team

ContactEmail – neil.hodgkinson@microsoft.comTwitter - @nellymo

AgendaDefinitionsTechnology OverviewOffice Web Apps & Workflow ManagerSharePoint High AvailabilitySharePoint Warm StandbySharepoint Cold Recovery

Take AwaysUnderstand the concepts of Business Continuity and the implications for SharePointDifferentiate between High Availability and Disaster RecoveryGain a deeper understanding of the available techniques for implementing HA/DR for SharePoint

DefinitionsHigh AvailabilityDisaster RecoveryStretched Farms

High Availability

“High Availability is a system design approach and associated service implementation that ensures a prearranged level of operational performance will be met during a contractual measurement period.”

Wikipedia

High Availability is about protecting the Service Level Agreements (SLAs) and the agreed Fault Domains

S

Service Level Agreements

Agreed levels of service usually between vendors, suppliers and clients or inter organisational departments

Availability % Downtime / Year

Downtime / Month

Downtime / Week

99% 3.65 days 7.20 hours 1.68 hours

99.9% 8.76 hours 43.20 minutes 10.10 minutes

99.99% 52.56 minutes 4.32 minutes 1.01 minutes

99.999% 5.26 minutes 25.90 seconds 6.05 seconds

99.9999% 31.50 seconds 2.59 seconds 0.61 seconds

Availability % Downtime / Year

Downtime / Month

Downtime / Week

99% 3.65 days 7.20 hours 1.68 hours

99.9% 8.76 hours 43.20 minutes 10.10 minutes

99.99% 52.56 minutes 4.32 minutes 1.01 minutes

99.999% 5.26 minutes 25.90 seconds 6.05 seconds

99.9999% 31.50 seconds 2.59 seconds 0.61 seconds

Fault Domains“Fault Domain is the group of physical infrastructure pieces with a common configuration that share a single point of failure.”

What am I protecting against?DatacentreRackHost ServerPower SupplyNetwork CardVirtual ServerService Instance

Building the Franken Rack

Lack of Redundant PowerLack of Redundant Network Connectivity

Building the Franken Rack

The Datacenter People Hate You

Building the Franken Rack

What about what’s inside?

Fault Domain Fault Domain

Defining Fault Domains

Fault Domain Fault Domain

Disaster Recovery“Disaster Recovery (DR) is the process, policies, and procedures that are related to preparing for recovery or continuation of technology infrastructure which are vital to an organization after a natural or human-induced disaster.”

Wikipedia

Defining RequirementsRecovery Point Objective (RPO)Acceptable amount of data loss measured in time

Recovery Time Objective (RTO)Duration of time within which a business process must be restored after a disaster

RPO RTO

Example:RPO of 1 hourRTO of 3 hours

“I can lose 60 minutes worth of data, and all of my data can be inaccessible for three hours.”

RPO/RTO versus Cost

RPO/RTO

COST

Datacentre BDatacentre A

SharePoint Farm

Stretched Farms

< 1ms

Stretched FarmsOriginally NOT supported for SP2013“Physical” Data CentreSupported as of April 2013

“Logical” Data Centre

For a stretched farm architecture to work as a supported high-availability solution, the following prerequisites must be met:

There is a highly consistent intra-farm latency of <1ms, 99.9% of the time over a period of ten minutes. (Intra-farm latency is commonly defined as the latency between the front-end web servers and the database servers.)

The bandwidth speed must be at least 1 gigabit per second.

http://technet.microsoft.com/en-us/library/cc262485(v=office.15).aspx#hwLocServers

Monitoring SQL Latency$prov = Get-SPUsageDefinition -Identity "SQL Latency Usage"$prov.Enabled = $true$prov.Update()

SELECT [MachineName], [DataSource], [InitialCatalog], [Count], [Percentile99], [MaxLatency]FROM SQLLatencyDataWITH(NOLOCK)WHERE PartitionId = @PartId  AND (LogTime > CONVERT(nvarchar(50), @StartDate + ' ' + @StartTime))  AND (LogTime < CONVERT(nvarchar(50), @EndDate + ' ' + @EndTime))

NH

High MaxLatency + high Percentile99 count requires investigation

Demo : Monitoring Intra Farm Latency

How do I do that ?

TechnologiesFailover ClusteringDatabase MirroringLog ShippingAlwaysOn Availability Groups

Failover Cluster

Failover Clustering

Server Hardware Redundancy

Uses a shared disk subsystemEntire instance fails over as a unit

Database MirroringSynchronous, high-availability configuration Data is Mirrored as part of a TransactionCompressed Log StreamAuto Page Repair

Database MirroringASynchronous, performance configuration

Increased PerformanceDistance no longer a barrier

Database Mirroring SummaryCost-effectiveNo Specialised Hardware is requiredStraightforward setup and administrationWorks at Database Level not InstanceHiccup while it fails overApplications Mirror Aware

Log Shipping

Transaction log backups sent from primary to secondariesApplied to each secondary databases

Multiple Secondaries

…

Failover ClusterFailover Cluster

Putting it all together!!

Failover ClusteringLocal server redundancy

Database MirroringPrimary disaster site for databases

Log ShippingAdditional disaster sites for databases

AlwaysOn Availability Groups

SQL Server 2012“Kind-of” Clustering and MirroringSync-CommitUp to three

Async-CommitFailover Cluster

Clustered Resource

RPO/RTO Options

Zero Seconds Minutes Hours Days Weeks

Recovery Point Objective

Reco

very

Tim

e O

bje

ctiv

e

Mirroring - Sync

AlwaysOn - Async

Failover Clustering

Backup/Restore

Mirroring - Async

Log Shipping

AlwaysOn - Sync

Office Web App FarmNothing is persistedConfiguration Settings

Office Web App

Office Web AppsNLB

SharePoint FarmNLB

OWA – Disaster RecoveryOptionsStandby farm local to SharePoint primary farmStandby farm in remote datacentreProcessDisconnect SharePoint farm from OWA farm

Remove-SPWOPIBinding –All:$trueAttach SharePoint farm to Standby farm

New-SPWOPIBinding -ServerName <WacServerName>

Workflow Manager FarmsOne or Three ServersDependencies on the Service Bus

Disaster RecoveryComplex!!!Requires creating a new Farm from SQL

Hot StandbyHA Configuration!!!Shortest possible RTO/RPO

Demo : High Availability

SQL Server 2012 AlwaysOn Availability Groups

Demo Environment - Start

SQL 1

FARM1

SQL 2

Demo Environment - End

Failover Cluster

Clustered Resource

SQL 1

FARM1

SQL 2

Warm StandbyComplex!Depends on Service Applications and associated Databases

Failover Processes• Planned• Unplanned

Demo :Warm Standby Farms

SQL Server 2012 AlwaysOn Availability Groups

Demo Environment - Start

SQL 1

FARM 1

SQL 2

FARM 2

SQL 3

Clustered Resource

ProductionAuckland

DRWellington

Failover Cluster

Demo Environment - End

SQL 1

FARM 1

SQL 2

FARM 2

SQL 3

ProductionAuckland

DRWellington

Failover Cluster

Clustered Resource

Demo SummaryDemo 1Create WFSC Cluster – Already doneCreated Always On Group – Added 3 SQL NodesCreate ListenerDrop ContentDB and Repoint to listenerFailover database to prove connection

Demo 2Discuss the listener and its useBuilt DR Farm with standby database – Sample site collectionRepoint prod are Primary and Secondary HA SQL ServersFailover to Async DR ReplicaDrop DR Standby DB and Reconnect Prod replicated DBShow bringing the DR farm onlineRepoint DNS after testing

Cold StandbySharePoint Farm Backup and Restore

Native ToolsThird Party Tools

SharePoint 2013 Backup and Recovery with DPM 2012

Limited to Content Databases and SharePoint Configuration

SummaryHA versus DRRPO, RTO, SLAs, and Fault DomainsHot StandbyWarm StandbyCold Standby

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9:00am – 10:00am

SES201

Overview of Enterprise Social from Microsoft

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10:40am – 11:40am

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Configuring your SharePoint 2013 Farm for Apps

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SharePoint Forensic Deep Dive Mark Rhodes

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SharePoint Search is Dead, Long Live SharePoint Search

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Customising the Search Experience in SharePoint 2013

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Upgrading, Deploying and Scaling out SharePoint Search : What No UI!

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SharePoint Stump the Experts : Panel Discussion

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Related contentRelated Certification Exams

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70-486 Developing ASP.NET MVC 4 Web Applications

70-488 Developing Microsoft SharePoint 2013 Server Core Solutions

70-489 Developing Microsoft SharePoint 2013 Server Advanced Solutions

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