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Backup &

Disaster

Recovery

Toji GeorgeSolution Architect – Pre-Salestoji@mongodb.com

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Topics

• Requirements around Availability and Backup

• MongoDB Solutions

• Tools for Backing up MongoDB

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Requirements

• “I need my data to be readable/writable in the face of

infrastructure failures”

– Memory, disk, server, network, rack, data center

• “Need tunable resiliency depending upon failure

scenarios”

• “I want to be able to get my data back to yesterday 3:05

PM because an application change caused some

erroneous updates”

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Requirements

• “I need my data to be readable/writable in the face of

infrastructure failures”

– Memory, disk, server, network, rack, data center

• “Need tunable resiliency depending upon failure

scenarios”

• “I want to be able to get my data back to yesterday 3:05

PM because an application change caused some

erroneous updates”

Availability

Backup

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Considerations

Effort and Cost to meet availability and backup

requirements driven by:

• RPO: Recovery Point Objective

– How much data can you afford to lose?

• RTO: Recovery Time Objective

– How long can you afford to be offline?

Availability

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• Automated replication

and failover

• Multi-data center

support

• Improved operational

simplicity

(e.g., upgrades, HW

swaps)

• Data durability and

consistency

MongoDB Replication for Availability

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Single Data Center

Automated failover

Tolerates server failures

Tolerates rack failures

Number of replicas defines

failure tolerance

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Active/Active Data Center

Tolerates server, rack, data center failures, network partitions

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Replication Advantage

• Built into MongoDB, only ops and infrastructure cost

• Meet RPO with tunable durability

– Acknowledge write from 1 to majority members of a

replica set

• Down for a very short interval

– Failover time is in seconds

Backup

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“We do not need backups for MongoDB”

• We have replicated data

• Multiple systems will not go down

• We have good change control

Why should you backup:

https://www.mongodb.com/presentations/run-mongodb-confidence-backing-and-monitoring-mms

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Solutions for Backup

Manual Automated

• mongodump/mongorestore

• Storage level backups

• MongoDB Management

Service or Ops Manager

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mongodump / mongorestore

• Can be run online or offline

• Oplog aware for point in time restores

• Filter in, filter out

• Considerations:

– Data size/can be slow

– Shard sync

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Storage level backups

• Flavors:

– Copy files in your data directory (e.g. /data/db)

– File system or block storage snapshots

• Fastest way to backup/restore

• Considerations:

– Journal/consistency

– Backup granularity (whole file system back up?)

– Ops expertise

– Storage of snapshots or data file backups

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MongoDB Management

Service (MMS)Ops Manager

• Runs on our cloud

(mms.mongodb.com)

• Free service for

Managing/Monitoring up to 8

servers

• Paid service for Backup, First 1 GB

Free

• Runs in your cloud / data center

• Included with MongoDB Enterprise

Advanced

http://www.mongodb.com/presentations/automate-

mongodb-mongodb-management-service-mms

http://www.mongodb.com/presentations/webinar-

introducing-ops-managerAutomation, for single-click provisioning,

scaling & upgrades

Monitoring, with charts, dashboards and

alerts on 100+ metrics

Backup and restore, with point-in-time

recovery, support for sharded clusters

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Steps for Backup

MMS Ops Manager

(Infrastructure already exists in the

cloud)

Setup MMS for Automation and

Monitoring Infrastructure

Size and setup MMS Backup

infrastructure

Start to monitor (and/or manage) your MongoDB

deployment

Deploy backup agents

Start taking backups

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Comparing backup approaches

Mongodump File system MMS Backup Ops Manager

Initial

complexity

Medium High Low High

System

overhead

High Low Low Medium

Point in time

recovery of

replica set

Yes * No Yes Yes

Consistent

snapshot of

sharded system

Yes * Yes * Yes Yes

Scalable No Yes Yes Yes

Restore time Slow Fast Medium Medium

* Possible, but need to write the tools and complex to setup and maintain

NOTE: You cannot use MMS or OPS Manager to backup Standalone MongoDB

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Backup Configuration

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How Backup WorksReplica Set

Shard 2 Shard 3Shard 1

Sharded Cluster

Production MongoDBDeployment

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How Backup Works

Ops

Manager

Replica Set

Shard 2 Shard 3Shard 1

Sharded Cluster

Production MongoDBDeployment

Backup Daemon HEADsInvisible secondary replicas

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How Backup Works

Ops

Manager

MongoDB Database

Replica Set

Shard 2 Shard 3Shard 1

Sharded Cluster

Production MongoDBDeployment

BlockstoreCompressed, deduplicated snapshot storage

Restores

Snapshots consistent clustershot (sharded)

Backup Daemon HEADsInvisible secondary replicas

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Backup Restore

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Test Restore(If you can’t restore, you aren’t backed up)

Summary

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Meet your RPO and RTO Objectives

with MongoDB

• Replication will help you meet stringent availability

requirements

• Backup with confidence using MongoDB tools

– Use MMS or Ops Manager to do point in time restores

with confidence

– Manual backup capabilities available

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Get expert help: Planning,

Installing, Sizing Ops Manager

Ops OptimizationWhat is it? A custom plan developed by a MongoDB consulting engineer for setting up Ops Manager on your infrastructure

What to expect• A plan for setting up Ops Manager in your data center

• Learn how to enable Ops Manager

• Figure out which metrics to monitor and how to enable a backup and disaster recovery strategy

Find out more at mongodb.comor email us at sales@mongodb.com

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Useful Links

• MMS – https://mms.mongodb.com

• MMS Documentation: https://docs.mms.mongodb.com/

• Ops Manager Download:

http://www.mongodb.com/download

• Ops Manager Documentation:

https://docs.opsmanager.mongodb.com

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Questions?