SQL Server High Availability

SQL Server High Availability
Tim Beamer, Technology Evangelist, Dell Services

Why Do You Need High Availability?
Downtime causes lost customer revenue and decreased staff productivity Availability during Planned Downtime Patching & Service Pack Installation Hardware and Software Upgrade System Reconfiguration Database Maintenance Application Upgrade Protection against Unplanned Downtime Human Error #1 Cause of Failure Site Disasters Hardware Malfunction Data Corruption Software Crash 2

Conceptual Design, SQL 2005 Confidential

Conceptual Design, SQL 2008 Confidential

SQL Server 2008 High Availability
4/19/2017 5:44 AM Redundancy at server, database and data page levels reduces costs associated with downtime Highly credible, cost effective high availability solutions Reduced downtime for database maintenance and hardware upgrades Reduced contention for resources Increased availability of data in the event of a partial failure Industry leading manageability tools © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Agenda Increasing Availability Decreasing Downtime
4/19/2017 5:44 AM Increasing Availability Decreasing Downtime Improving Manageability © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

SQL Server 2008 High Availability Features
4/19/2017 5:44 AM Database Mirroring Transactional Replication Log Shipping Backup/Restore Windows Clustering Database Snapshot © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Mirroring Overview
4/19/2017 5:44 AM Hot Standby protects against database or server failure Provides a fault-tolerant database Cost effective as no specialist hardware is required Straightforward setup and administration Automatic or manual failover SQL Server 2008 does not require a database restart after manual failover Automatic, transparent client redirect No shared components; two separate copies of data SQL Server 2008 compresses the log stream from Principal to Mirror © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Mirroring Synchronous, high availability configuration
4/19/2017 5:44 AM Data is mirrored synchronously as part of a transaction Automatic failover if Principal server fails Automatic Client redirection Witness Client Principal Mirror © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Mirroring Synchronous, high protection configuration
4/19/2017 5:44 AM Data is mirrored synchronously as part of a transaction Manual failover if Principal server fails Automatic Client redirection Client Principal Mirror © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Mirroring Asynchronous, high performance configuration
4/19/2017 5:44 AM Data is mirrored asynchronously outside of transactions Manual failover if Principal server fails Automatic Client redirection Client Principal Mirror © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Mirroring Recovering suspect pages
4/19/2017 5:44 AM SQL Server 2008 uses a checksum to validate page writes Inconsistant pages can be recovered automatically from the mirror server Principal Mirror © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Transactional Replication
4/19/2017 5:44 AM High performance – latency measured in seconds Minimal load on the server Cost effective as no specialist hardware is required Straightforward setup and administration Can be implemented at database or table level Two types Standard transactional replication Easy to design, setup & manage Subscriber (standby) can be used for reporting Peer-to-peer transactional replication Multi-master model; schema is identical on all sites Supports distributed applications with data partitioning; enables load balancing Does not handle conflicts; design to avoid/prevent conflicts © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Transactional Replication Replication Options
4/19/2017 5:44 AM Peer-to-Peer Replication Query Scale Out + Redundancy Transactional Replication Reporting + Redundancy London New York Boston Shanghai New Jersey Seattle Tokyo © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Peer-To-Peer Transactional Replication How does it work?
4/19/2017 5:44 AM “West” “East” Distribution Agent Dist DB Logreader Distribution Agent Dist DB Logreader “South” Distribution Agent Dist DB Logreader

Peer-To-Peer Transactional Replication SQL Server 2008 Enhancements
4/19/2017 5:44 AM Configure replication easily with the new graphical topology viewer Add new nodes without taking replication offline Protect against accidental conflicts with SQL Server conflict detection © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Log Shipping Provides database redundancy
4/19/2017 5:44 AM Provides database redundancy Cost effective as no specialist hardware is required Straightforward setup and administration Running read operations such as reports on secondary server is permitted Users are disconnected when log restore occurs Can maintain multiple secondary servers Optional Monitor server Records history and status of backup/restore jobs May be setup to raise alerts when jobs fail © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Backup Permanent copy of data Online restore
4/19/2017 5:44 AM Permanent copy of data Online restore Perform a restore operation while an instance of SQL Server is running Backup compression in SQL Server 2008 Reduce volume by up to 50% Allows reduced latency and faster restore Applied per instance and per backup Cost effective - no specialist hardware is required Straightforward setup and administration © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Backup Backup Media Mirroring
Protection against lost or damaged backup media All backup types can be mirrored (database, log, etc.) Each device must be the same type All devices must be present during Backup, but only one backup set is required for Restore © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Microsoft Clustering Server hardware redundancy
4/19/2017 5:44 AM Server hardware redundancy Using a shared disk subsystem Entire instance virtualized and fails over as a unit Can include non-SQL Server resources SQL Server 2008 no longer requires a drive letter for each instance Clustering can be combined with Database Mirroring, Log Shipping, or Replication Geographically Dispersed Failover Clustering provides protection even if the disk array fails © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Microsoft Clustering SQL Server Editions
4/19/2017 5:44 AM Standard Edition Enterprise Edition 2-node clusters only As many nodes as the operating system supports © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Windows Server 2008 Clustering
4/19/2017 5:44 AM Support for 16 node clusters Nodes can reside on different subnets Support for OR dependencies E.g. Network Name resource is available if either of two IP Address resources is available Cluster Validation tool Verifies adequate hardware resources for clustering © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Database Snapshot Provides a read-only, consistent copy of database
4/19/2017 5:44 AM Database Snapshot Provides a read-only, consistent copy of database Snapshot remains unchanged while database is modified Protects against user error and data corruption Very fast to create Preserves disk space “Copy-on-Write” technology Can be created for any database Cost effective as no special hardware is required Straightforward setup and administration Client © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Putting it All Together
4/19/2017 5:44 AM Database Mirroring Primary disaster site for databases Log Shipping Additional disaster sites for databases Logical Recovery Replication Database reporting and read scale out with redundancy Clustering Local server redundancy Always On Storage Partner Solutions Site storage HA Highest hardware reliability Database Scale Out For Queries Replication Database Mirroring Clustering Hot Standby Production Database Log Shipping Warm Standby Log Shipping with Restore Delay Logical Recovery Standby Backup © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

SQL Server High Availability Licensing
4/19/2017 5:44 AM License only active servers Passive servers do not require a license If a failover occurs a license is not required for 30 days Most cost effective high availability model amongst leading database vendors © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Enhanced Restore Operations
4/19/2017 5:44 AM Online Restore Access restored data even when the rest of the database is not yet available Piecemeal Restore Recover the database in stages – bring critical filegroups online first, then restore remaining filegroups Page-Level Restore Restore individual pages from a backup to resolve page corruption issues quickly © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Fast Recovery During Restart or Restore
4/19/2017 5:44 AM SQL Server 2000 Database is available after Undo completes SQL Server 2008 Database is available when Undo begins Redo Undo Time DB is Available Undo Redo DB is Available © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Online Index Operations
4/19/2017 5:44 AM Create, Rebuild, and Drop indexes online CREATE CLUSTERED INDEX idx_Prd ON Products WITH (ONLINE = ON) Scan Sort/Merge Bulk Insert INSERT UPDATE DELETE Source (Existing Products table) Target (new index) SELECT Idx_Prd © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Partial Database Availability
4/19/2017 5:44 AM Database remains partially available when secondary files are damaged Primary Filegroup Additional Data Filegroups © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Locking and Concurrency
4/19/2017 5:44 AM Row versioning support READ_COMMITTED_SNAPSHOT isolation level ALLOW_SNAPSHOT_ISOLATION database option Benefits of row versioning Read operations retrieve a consistent snapshot of the database. SELECT statements do not lock data during a read operation (readers do not block writers, and vice versa) SELECT statements can access the last committed value of the row, while other transactions are updating the row without getting blocked The number of deadlocks is reduced The number of locks required by a transaction is reduced, which reduces the system overhead required to manage locks Fewer lock escalations take place Enhanced locking in SQL Server 2008 Optimized lock escalation for partitioned tables and indexes © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Dynamic Configuration
Add hardware resources without taking the database server offline Hot-Add Memory Hot-Add CPU © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Table and Index Partitioning
4/19/2017 5:44 AM Partition tables and indexes across multiple physical files Reduce the impact of IO intensive operations Manage backup and archival based on partitions Control lock escalation at the partition level to increase concurrency © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Dedicated Administrator Connection
4/19/2017 5:44 AM Special diagnostic connection for administrators Available when other connections are not possible Use to troubleshoot or shut down cleanly Only available from clients running on the server by default © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

SQL Server Resource Governor Ability to differentiate workloads
4/19/2017 5:44 AM SQL Server Ability to differentiate workloads e.g. app_name, login, etc. Per-request limits Max memory % Max CPU time Grant timeout Max Requests Resource monitoring Backup OLTP Activity Executive Reports Admin Tasks Ad-hoc Reports High Admin Workload OLTP Workload Report Workload Min Memory 10% Max Memory 20% Max CPU 20% Admin Pool Max CPU 90% Application Pool © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Tim’s Axioms of DR A failure to plan is the plan for failure
If you’re building the plan while recovering, make sure your resume is updated The failure to plan on someone else’s part will almost always constitute an emergency on your part Plan for the worst, hope for the best, and know that reality is always somewhere in the middle Commitment = $ Every plan has a weak link, identify early and strengthen Regular review is critical Always have a “Plan B” ready to go Confidential

Planning Considerations
Plan development will require input from every business unit RPO/RTO needs to be well-defined and well-aligned If the RTO for SQL is 2 hours and an application using SQL has an RTO of 10 minutes, your alignment is off “A week” is NOT a well-defined RTO RPO/RTO define the solution, NOT the other way around Develop your Application Matrix (communicate it too) Document dependencies (Dynamics CRM requires SQL, Exchange, Scribe, and LOB App X) Each additional place to the right of the decimal for uptime is an exponential increase in the cost of the solution (99.9% vs %) Designate alternates for each role/responsibility Confidential

Can Virtualization help?
Of course! HW virtualization (Live Migration, V-Motion) Storage Virtualization (Quick Storage Migration ,Storage V- Motion) Storage Solutions with SQL “intelligence” (Like Equallogic and Compellant) to reduce admin involvement COMBINE your D/R and Prod. Environments Don’t forget about the End-User environment Desktop Applications Have you thought about “cloud”? Confidential

4/19/2017 5:44 AM Q&A © 2006 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

SQL Server High Availability

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