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Tuần 9 - Ngày 1: Migration Strategies (7Rs)

Tuần 9 – Ngày 1

Tuần 9 - Ngày 1: Migration Strategies (7Rs)

1. The 7Rs of Migration

┌─────────────────────────────────────────────────────────┐│7RsMIGRATIONSTRATEGIES││││1.RETIRE││└──Decommission,nolongerneeded││││2.RETAIN││└──Keepon-premises(notreadytomigrate)││││3.RELOCATE(VMwareonly)││└──VMwareCloudonAWS││││4.REHOST(LiftandShift)││└──Moveas-istoEC2││└──Tools:MGN,SMS││││5.REPLATFORM(LiftandReshape)││└──Minoroptimizations││└──Example:MovetoRDS││││6.REPURCHASE(DropandShop)││└──MovetoSaaS││└──Example:CRMtoSalesforce││││7.REFACTOR(Re-architect)││└──Redesignforcloud-native││└──Mosteffort,mostbenefit│└─────────────────────────────────────────────────────────┘

2. Migration Tools

┌─────────────────────────────────────────────────────────┐│AWSMIGRATIONTOOLS││││DISCOVERY:││├──MigrationHub││├──ApplicationDiscoveryService││└──MigrationEvaluator││││SERVERMIGRATION:││├──ApplicationMigrationService(MGN)││└──ServerMigrationService(SMS)-legacy││││DATABASEMIGRATION:││├──DatabaseMigrationService(DMS)││└──SchemaConversionTool(SCT)││││DATATRANSFER:││├──DataSync││├──TransferFamily││├──SnowFamily││└──StorageGateway││││CONTAINERMIGRATION:││└──App2Container│└─────────────────────────────────────────────────────────┘

3. Application Migration Service (MGN)

┌─────────────────────────────────────────────────────────┐│MGNPROCESS││││SourceServersAWS││┌────────────┐┌────────────────┐│││Server││StagingArea││││+Agent│──Replication────►│(EBSvolumes)│││└────────────┘└────────┬───────┘│││││Test/Cutover│││││┌────────┴───────┐│││TargetEC2││││Instances│││└────────────────┘││││Benefits:││-Continuousreplication││-Non-disruptivetesting││-Automatedconversion││-Supportsphysical,virtual,cloud│└─────────────────────────────────────────────────────────┘

4. Database Migration Service (DMS)

Migration Types:
- Full load
- Full load + CDC (Change Data Capture)
- CDC only

Supported Sources:
- On-premises databases
- RDS, Aurora, S3
- Oracle, SQL Server, MySQL, PostgreSQL

Schema Conversion Tool (SCT):
- Convert schemas between engines
- Oracle → PostgreSQL
- SQL Server → MySQL
- Assessment reports

5. Snow Family

┌─────────────────────────────────────────────────────────┐│SNOWFAMILY││││SNOWCONE(8TB):││├──Edgecomputing││└──Smalldatatransfer││││SNOWBALLEDGE:││├──StorageOptimized(80TB)││└──ComputeOptimized(42TB+GPU)││││SNOWMOBILE(100PB):││└──Exabyte-scalemigration││││Usewhen:││-Limitedbandwidth││-Largedatasets(>10TBtypically)││-Timeconstraints││││Transfertimecomparison:││100TB@1Gbps=~12days││100TBviaSnowball=~1weektotal│└─────────────────────────────────────────────────────────┘

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Ngày tiếp theo: Data Migration Patterns