Clusters Your Way. SQL Server in "The Cloud": High Availability and Disaster Recovery in Azure, AWS and Google

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1 Clusters Your Way SQL Server in "The Cloud": High Availability and Disaster Recovery in Azure, AWS and Google Jason Aw, Strategic Business Development Copyright 2017 SIOS Technology Corp. All rights reserved. 1

2 Jason Aw Strategic Business Development, SIOS Jason Aw is a Strategic Business Development director with SIOS Technology for APAC. In his current role at SIOS and previous companies he has focused on providing high availability and disaster solutions for the past 20 years. Copyright 2017 SIOS Technology Corp. All rights reserved. 2

4 Azure s SLA 99.95% (~22 minutes month)...but read the fine print Only applies to two or more instances in an Availability Set Provides dial-tone to the instance But wait.what about the storage? 99.9% write guarantee (~44 minutes month) What about SQL Server? No guarantee you must manage SQL Server Availability Copyright 2017 SIOS Technology Corp. All rights reserved. 4

5 AWS SLA 99.99% (~4.34 minutes month) Region Unavailable - For all other Regions, when For all other Regions, when more than one AZ within the same Region, in which you are running an instance or task (one or more containers), as applicable, are concurrently Unavailable to your AZ within the same Region, in which you are running an instance or task (one or more containers), as applicable, are concurrently Unavailable to you. Copyright 2017 SIOS Technology Corp. All rights reserved. 5

6 Google Compute Cloud SLA 99.99% (~4.34 minutes month) Downtime means: For Instances: Loss of external connectivity or persistent disk access for all running Instances, when Instances are placed across two or more Zones in the same Region. Copyright 2017 SIOS Technology Corp. All rights reserved. 6

AWS Availability Zones 10 Copyright 2017

10 Google Zones Distribute your resources across multiple zones and regions to tolerate outages. Google designs zones to be independent from each other: a zone usually has power, cooling, networking, and control planes that are isolated from other zones, and most single failure events will affect only a single zone. 11 Copyright 2017 SIOS Technology Corp. All rights reserved. 11

11 Many Points of Failure in the Cloud The Cloud Virtual Machine Service Internet Access What is your plan for an outage of How can you How can you What steps can you Is your vnet up The Cloud? ensure your SQL ensure Active take to ensure your and running? Server Service Directory and data stays online? Who has access stays online? DNS Services are to firewalls available? configurations? If Availability your applications Set are in The Cloud VM How what do Instance you maintain happens Availability if your uptime clients for planned Zones lose internet maintenance and Storage SQL Services AD/DNS Networking Zones connectivity? unplanned outages? Geographic Region 12 Copyright 2017 SIOS Technology Corp. All rights reserved. 12

13 Benefits of each Solution Availability Groups Quick Failover Readable Secondary Automatic Page Repair Does not require 3 rd party product Failover Cluster Instance Protects Entire Instance Works with SQL Server Standard Edition Supports SQL Server 2008 R2 and earlier 14 Copyright 2017 SIOS Technology Corp. All rights reserved. 14

Failover Clustering is the Framework of HA

15 Always On Availability Groups Build the Windows Server Cluster Validate Cluster Create Cluster Adjust the quorum Install Standalone SQL Server Instances Enable Always On Availability Groups Create Availability Group Add a Listener Fix the Azure Network Create the Load Balancer Fix the IP Resource Adjust Firewalls Copyright 2017 SIOS Technology Corp. All rights reserved. 16

16 Things to Consider in Azure Create cluster with Power Shell due to DHCP issues Use Accelerated Networking Use Load Balancer for client redirection 17 Copyright 2017 SIOS Technology Corp. All rights reserved. 17

Disaster Recovery Options Data Replication AlwaysOn Availability Groups Multisite Cluster with

Azure Region Pairs Typically >300 miles apart Typically Same Country System Update

AlwaysOn Availability Groups Using SQL Server AlwaysOn Availability Groups for HA and DR SAP ASCS With SIOS DataKeeper SAP Application Servers Azure Site Recovery SAP ASCS With SIOS DataKeeper

24 AlwaysOn Availability Groups Using SQL Server AlwaysOn Availability Groups for HA and DR SAP ASCS With SIOS DataKeeper SAP Application Servers Azure Site Recovery SAP ASCS With SIOS DataKeeper SAP Application Servers SQL Server AlwaysOn Availability Groups SQL Server AlwaysOn Availability Groups Azure US Central Azure US East 2 Copyright 2017 SIOS Technology Corp. All rights reserved. 26

With SIOS DataKeeper SAP Application Servers SQL Server FCI w/datakeeper SQL Server FCI

25 SIOS DataKeeper Replication Using SQL Server Failover Multisite Cluster and SIOS DataKeeper for HA and DR SAP ASCS With SIOS DataKeeper SAP Application Servers Azure Site Recovery SAP ASCS With SIOS DataKeeper SAP Application Servers SQL Server FCI w/datakeeper SQL Server FCI w/datakeeper Azure US Central Azure US East 2 Copyright 2017 SIOS Technology Corp. All rights reserved. 27

26 Azure Site Recover and SIOS DataKeeper Using SQL Server Failover Cluster for with DataKeeper for HA and ASR for DR SAP ASCS With SIOS DataKeeper SAP Application Servers SAP ASCS With SIOS DataKeeper SAP Application Servers SQL Server FCI w/datakeeper Azure Site Recovery SQL Server FCI w/datakeeper Azure US Central Azure US East 2 Copyright 2017 SIOS Technology Corp. All rights reserved. 28

27 Hybrid Cloud Multi-Site Clustering Asynchronous replication to Off-Site DR Node Node 3 Block Replication to Remote Node(s) Failover Node 1 Node 2 Node 4 SAN or Shared Storage Copyright 2017 SIOS Technology Corp. All rights reserved. 29

28 Site Preference #Create Site Fault Domains New-ClusterFaultDomain Name Philly Type Site Description Primary Location Philadelphia DC New-ClusterFaultDomain Name Azure Type Site Description Secondary Location Azure US East 2 #Set Fault Domain membership Set-ClusterFaultDomain Name Node1 Parent Philly Set-ClusterFaultDomain Name Node2 Parent Philly Set-ClusterFaultDomain Name Node3 Parent Philly Set-ClusterFaultDomain Name Node4 Parent Azure Groups failover to a node within the same site, before failing to a node in a different site Copyright 2017 SIOS Technology Corp. All rights reserved

29 Monthly Cost (DS4 w/8 vcore) Protect System Databases Supports Distributed Transactions Eases Database Administration Replicates Data other than SQL AlwaysOn Availability Groups for HA and DR AlwaysOn FCI with SIOS DataKeeper for HA and DR Azure Site Recovery for DR and SQL FCI with DataKeeper for HA $9466 $4758 $ RTO 3 4 or 3 1 RPO Failback Copyright 2017 SIOS Technology Corp. All rights reserved. 31

30 1 Month Cost Comparison Assume DS4 VM (8 vcores) each with two P30 Disks $10,000 $9,000 $8,000 $7,000 $6,000 $5,000 $4,000 $3,000 $2,000 $1,000 $- 3 VMs 6 3 copies of SQL Server Enterprise 3 copies of SQL Server Standard and DataKeeper AlwaysOn AG SIOS DataKeeper Azure Site Recovery and DataKeeper P30 3 VMs 6 P30 2 copies of SQL Server Standard and DataKeeper plus 3 Azure Site Recovery instances Software Compute & Storage Copyright 2017 SIOS Technology Corp. All rights reserved. 32

31 Thank You Learn more from Jason Aw or linkedin - /awjason

Building Clusters to Protect SQL Server in Cloud Configurations

Building Clusters to Protect SQL Server in Cloud Configurations David Bermingham Senior Technical Evangelist, SIOS Technology Microsoft Cloud & Datacenter MVP (2010-Present) Copyright @ 2017 SIOS Technology