Trivadis TechEvent 2017 Reach effective High Availability solution by Jacques Kostic

BASLE BERN BRUGG DÜSSELDORF FRANKFURT A.M. FREIBURG I.BR. GENEVA

HAMBURG COPENHAGEN LAUSANNE MUNICH STUTTGART VIENNA ZURICH

Reach effective High Availability solution With Oracle and SqlServerWhy Oracle is still your best choice

Jacques KosticPrincipal Consultant IMS Lausanne

Tel. +41 79 909 72 [email protected]

TechEvent 2017-march-182 26/10/2017

Experience:

• Oracle DBA since 1990• High Availability and Backup & Recovery Architect• SQL and Instance Performance & Tuning• License Audit and Consolidation

Certifications:

• Oracle Certified Master 11g & 12c• Oracle 11g Performance Tuning Certified Expert• Oracle RAC 11g and Grid Infrastructure Administration• Oracle Exadata Administrator Certified Expert• Oracle Certified SQL Expert 11g• Pending: Microsoft Sql-Server 2016 Certified Professional

Teaching Courses at Trivadis:

• Oracle 11g & 12c Grid Infrastructure & RAC• Oracle 11g & 12c Data Guard• Oracle 11g & 12c Performance & Tuning• Oracle 11g & 12c Administration• SQL & PL-SQL• OEM – 12 & 13

About me

Agenda

TechEvent 15 Sept 20173 26-Oct-17

1. Introduction

2. What is High Availability and why we need that

3. The Business Case scenario

4. Microsoft Always On

5. Oracle Data Guard

6. Let‘s scale

7. What can Trivadis do for you?

8. Comparison

9. Conclusions


Introduction

Introduction


Today’s systems need to be up all the time

And scalability is a must!

Therefore businesses is becoming addicted to IT


What is High Availability

And why we need that

What is High Availability ?


High Availability

Group of techniques which try to assure the continuous functioning of services, even if computers fail, to avoid and minimize downtime

Data versus Service High Availability

More locations

of data

More locations

of serviceService High Availability

Data High Availability

What is High Availability ?


Do I need High Availability

Avoid certain periods of downtime

Avoid certain lengths of downtime

Avoid certain results of downtime

Avoid a certain frequency of an error

For a decision, whether High Availability is needed, look at the consequences of a potential downtime

Why High Availability ?


Generally

To preserve your businessHave you calculated the cost of downtime to your business?

To preserve your dataHave you calculated the impact of losing your data?

To improve your reputation and therefore your brandHave you evaluated customer perception of your company?

Why High Availability?


To be more Technical

What do you want to protect against?

How long are you able to survive without your system?

What are your RTO and RPO?

How to keep your system up to date?


The Business Case Scenario

The Business Case Scenario


Description

Hand Spinner market is growing fast and there is a particular need forpersonal customized models. The goal is to:

Host a World Wide e*Commerce web site for selling custom Hand Spinners

Setup a Read Only reporting database for the marketing team, day-1 istolerated

Reporting must be accessible during office hours

The Business Case


Concretely

SLA: 24 * 7 access, RTO and RPO 15 minutes

Less than five hours per month downtime is tolerated for plan maintenance

If production site is lost, a continuity scenario has to be in place to satisfy

the business within the SLA

Reporting database is not available if failover is requested

More than 50 concurrent connections to the web site is forecasted

Database initial size is 20 GB and grow estimate is 50 GB/month

Backup strategy with no impact on production

The Business Case


Internet

Web Servers Database ServersBasic Diagram

The Business Case


Available Hardware: non negotiable!

1 * 12 cores 2.9 Ghz E5-2650

256 GB of RAM

2 * 300 GB SSD for OS

4 * 1.8 SSD Read Intensive for data storage

2 * 2TB SATA drives for local data

2 * 1 GB NIC

4 * 10 GB NIC

The Business Case


Software options are:

OS:Windows 2016 Linux RedHat or OEL 7

Database: SqlServer 2016 Oracle 12.2


Microsoft Always On

Microsoft Always On


BackupsAuto Failover

Always On Availability Group

Listener

Synchronisation

Synchronous replication is applied to

“Read Only” instance All workload is absorbed by the

primary instance

The two instances R are linked to

the Listener and Read-Only

instance can become primary in

case of switchover or failover

Accessing instance Read-

Only for reporting is

done using a dedicated

connect string

Backups taken from

Read-Only instance

Microsoft Always On


OS License cost:W2K16 DCE: 1 * 12 = 12 cores 161 = 6’155 * 3 = 18’465 CHF

SQL-Server License cost: The replica instance is “Read Only” and therefore need to be licensed.

1 * 12 = 12 cores * 2 = 24 / 2 = 12 Licenses Packs SQL-Server 2016 EE 14’256 * 12 = 171’072 CHF

Total cost: 189’537 CHFYearly support: 47’384 CHF

1 Minimum of 8 core per processor, minimum 16 cores per servers


Oracle Data Guard

Oracle Data Guard


R


Data Guard Configuration & Fast Start Failover

…

SqlNet

P

All workload is absorbed by the

primary instance

Synchronous replication is applied to

“Read Only” instance with Data Guard and

the Active Data Guard option

Synchronisation

Accessing the two instances in

case of switchover of failover is

done using a single connect

string alias

Accessing instance R for

reporting is done using a

dedicated connect string

Automatic Failover is

managed by the observer

Oracle Data Guard


OS License cost: Free

Oracle License cost: In total, two servers need to be licensed.

2 * 12 = 24 cores / 2 = 12 Licenses CPU Oracle 12c EE + Oracle ADG 47’000 * 12 + 11’200 * 12 = 698’400 CHF



Let‘s scale

Let‘s scale…


After few months…

Hand Spinner market is growing much faster than originallyplanned!

The e*Commerce system needs to scale as users are impactedby performance issues

System is sometime CPU bound

Recommendation is to nearly double the amount of CPU

Microsoft Always On


P R



Listener

Synchronisation

P2

Microsoft Always On


P R



Listener

Synchronisation

Microsoft Always On


SQL-Server License cost: New production server has now 22 cores

Total cores to license is 34 compare to 24: increase is 10 so 5 Licenses Packs 14’256 * 5 = 71’280 CHF

Total cost increase: 71’280 CHFYearly support: 17’820 CHF

New Yearly support: 65’204 CHF

Oracle Data Guard


R


Data Guard Configuration & Fast Start Failover

…

SqlNet

P

Oracle Data Guard


Oracle License cost: All servers need to be licensed.

1 * 12 + 1 * 24 = 36 / 2 =18 Licenses CPU Increase 6 EE + 6 ADG 47’000 * 6 + 11’200 * 6 = 349’200 CHF

Total cost increase: 349’200 CHFYearly support increase: 76’824 CHF

New Yearly support : 297’248 CHF


What can Trivadis do for you?

What can Trivadis do for you?


What is the alternative?

Application is purely website workload with very shorttransactions

Response time is the key driver

No I/O demanding queries

No additional options required

Hyper Converged Oracle RAC Standard Edition 2


P2 R

TVD-BackupsManual /Auto Failover

TVD-Standby

Scan Listener

…

SqlNet

P1

Hyper Converged Infrastructure

Interconnect

Hyper-Converged Storage

Oracle Clusterware is used to manage

replication with ASM normal redundancy Hyper Converge Software, no need to

have access to shared storage

Workload is absorbed by the

two instances

5 minutes Gap with

TVD-StandbyBackup performed by

TVD-Backup module

Accessing the two instances in

case of switchover of failover is

done using a single connect

string alias

Accessing instance R for

reporting is done using a

dedicated connect string



Oracle License cost: The three servers need to be licensed.

3 sockets = 3 Licenses CPU SE2 17’000 * 3 = 51’000 CHF

Trivadis software cost: TVD-Backup (1 Server) = 7’000 CHFTVD-Standby (2 Databases) = 5’900 CHF


1 included 20’000 CHF for Hyper converge software support



Limitations:

Max 2 sockets in the cluster

Max 8 threads per nodes

No other options are licensable

Nothing prevent the customer to upgrade to EE one day


Comparison

Comparison


OptionInitial To Scale

Investment Support Investment Final Support

Microsoft Always-On 189’537 47’384 71’280 65’204

Oracle Enterprise Edition + DG 698’400 153’648 349’200 297’248

Oracle Standard Edition 2 +

TVD-Tools63’900 36’500 0 36’500

Option Total Investment Total Support

Microsoft Always-On 260’817 65’204

Oracle Enterprise Edition + DG 1’047’600 297’248

Oracle Standard Edition 2 + TVD-Tools 63’900 36’500

Comparison


Option Implement Scale Performance Cost

Microsoft Always-On++++ + +++ ++

Oracle Enterprise

Edition + Data Guard ++++ + +++ -

Oracle Standard

Edition 2 RAC +

TVD-Tools+++ +++ ++++ ++++


Conclusion

Conclusion


Microsoft Always on is offering a very good alternative to Oracle for High

Availability but unfortunately, there are still limitations regarding scalability

Depending of the application profile, mixing SE2 RAC with Hyper-

Converged Storage and Trivadis tools, is offering very powerful features to

run your business

Even with some limitations like max 8 threads per RAC instance, Standard

Edition 2 version can handle a massive OLTP or Web Site workload

For High Availability and scalability, Oracle is still the best option

Questions?Jacques Kostic

Principal Consultant IMS Lausanne

Tel. +41 79 909 72 63

[email protected]

26-Oct-17 TechEvent 15 Sept 201740

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Trivadis TechEvent 2017 Reach effective High Availability solution by Jacques Kostic

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