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SharePoint 2013 & SQL Server 2012 Availability Groups
The Rough Guide
About Me
SharePoint
consultant. Platform
architect. Speaker.
Trainer. Accidental
DBA.
Agenda
Acronym Soup
Setting the stage…
HA
Protection is typically automatic
DR
Protection is typically manual
RPO
Business decision!
RTO
Business decision!
RPO & RTO in Perspective
last backup at 20:00
outage at 08:00
full recovery at 12:00
time
RPO 12h
RTO 4h
SLA
Before SQL 2012
Failover Clustering
Transparent for SharePoint
Mirroring
Pre-SharePoint 2010: use sql aliases
SharePoint 2010/2013: native support
SharePoint & Mirroring
Log Shipping
Typically for SharePoint standby farms
Common Topologies
Other Techniques
Availability Groups
SQL 2012 AlwaysOn
AG Concepts
Introducing AG
Protecting SharePoint
HA (Single farm)
DR (Standby farm)
Other AG Benefits
Comparing Techniques
SQL Server solution
Potential data loss (RPO)
Potential recovery time
(RTO)
Automatic failover
Readable secondaries
AlwaysOn Availability
Group (synchronouscommit)
Zero
Seconds
Yes
0-2
AlwaysOn Availability
Group (asynchronouscommit)
Seconds
Minutes
No
0-4
An FCI itself does not
AlwaysOn Failover Cluster provide data protection.
Instance
The amount of data loss
Seconds to minutes
Yes
Does not apply
Database mirroring High-safety (synchronous Zero
mode + witness server)
Seconds
Yes
Does not apply
Database mirroring High-performance
(asynchronous mode)
Seconds
Minutes
No
Does not apply
Backup, copy, restore
Hours or zero if the tail of
the log can be accessed
after the failure.
Hours to days
No
Not during a restore
Does not apply
depends on the storage
system implementation.
SharePoint Databases
Requirements
Set Up
Steps
Install WSFC on all nodes
Validate & Configure WSFC
Install SQL Server on all nodes
Activate AG
SharePoint HA
SharePoint DR
SQL Server 2014
Hot or Not?
Getting Started – Resources
http://thvo.me/alwayson-res
http://thvo.me/alwayson-sp
Q&A
THANK YOU