itcamp 2011 - cristian lefter - sql server code-name denali

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SQL Server code-name "Denali"

Cristian Lefter

SQL Server MVP

http://sqlserver.ro

http://sqlserver.ro/




IT Camp 2011

• Thanks for coming!

• ITCamp is made possible by our sponsors:


Agenda

• Trends in the world of databases

• Microsoft answers and directions


Trends in the world of database

• NOSQL

• Column oriented databases

• Streaming information

• Cloud


NoSQL

• Things have changed

• The estimated volume of digital data 1.2 zettabytes (ZB) (1 ZB is approximately 1,000,000,000 TB)

• Key-Value Stores, Document Databases, and Graph Databases


Why NoSQL

• Let’s take Twitter for example

• In 2010 Twitter users generate 12 TB of data daily = 4PB per year

• 12 TB is approximately 9 million 3 ½ floppy disks = 9 million 3 ½ floppy disks is more than 800 km


Why NoSQL cont.

If I want to write 12TB of data at a rate of 100MB/s

… it will take more than 35 h > 24 h


NoSQL proposal

• Solution: distributed key/value stores that provide unlimited scalability to store data

• Open-source projects: Hadoop, Voldemort, Cassandra, CouchDB, Dynomite, MongoDB

• Proprietary cloud based data stores: Google App Engine 's Datastore, Amazon SimpleDBForce, Windows Azure Storage Services, Force.com Database Services.


NoSQL related

http://research.microsoft.com/projects/trinity/


Microsoft answers and directions

• Azure platform

• VertiPAQ

• StreamInsight

• AlwaysOn

• Contained Databases


AlwaysOn

• SQL Server AlwaysOn is a HADR solution


AlwaysOn – feature accountability

• Instance level / database level availability • Failover a set of databases • Multiple secondaries • Synchronous / Asynchronous • Auto / Manual failover • Flexible failover policy • Configuration wizard • Dashboard • Diagnostics


o Multi-database failover

o Multiple secondaries

o Total of 4 secondaries

o 2 synchronous secondaries

o 1 automatic failover pair

o Synchronous and asynchronous data movement

o Built in compression and encryption

o Automatic and manual failover

o Flexible failover policy

o Application failover using virtual name

o Configuration Wizard

o Dashboard

o System Center Integration

o Rich diagnostic infrastructure

o File-stream replication

Flexible

o Active Secondary

o Readable Secondary

o Backup from Secondary

o Automation using power-shell

AlwaysOn – feature accountability (cont.)


AlwaysOn – concepts

• Availability group – a set of user databases that can fail over as a single unit

• Availability replicas – set of failover partners • Primary replica - maintains the primary copy

of each database (allows read/write access) • For each primary database, a secondary

replica - maintains a failover copy of the database known as a secondary database

• AlwaysOn Failover Cluster Instance - provides protection for the entire instance


AlwaysOn Failover Cluster Instance

Adds the following to the SQL Server Failover Clustering capabilities:

• Multi-site clustering across subnets

• Flexible failover policy for better control

• Improved diagnostics

• tempdb on local drive for better query performance


AlwaysOn in CTP1

• Failover a group of databases • Add a single secondary using the asynchronous availability mode • Force failover to the asynchronous secondary • Suspend and resume data movement • Enable the secondary for read and execute read query on the

secondary • Create a virtual name for the availability group and have

application connect using the virtual name • Configuring availability group using Transact-SQL, AlwaysOn

wizard, Powershell • Troubleshoot using DMVs, Performance Monitor Counters and

Extended events • Create a multi-site cluster across subnets • Enable flexible failover policy • Improved diagnostics


Vertipaq

• PowerPivot

• Storage mode for Analysis Services

• Columnstore index


Vertipaq row store vs. column store


Denali - features list

• AlwaysOn • Windows Server Core support • Query performance - Project “Apollo” (column store

index) • Project “Crescent” & PowerPivot • BI Semantic Model • Data Quality Services • Scale on demand from devices to datacenter to cloud • Project “Juneau” - Write applications once, run

anywhere with • Online operations include reindexing of LOB columns

and addition of non-null columns


Last but not least

The good news: IT changes from cost center to a profit(revenue) center!


THANK YOU!


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itcamp 2011 - cristian lefter - sql server code-name denali

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