[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[],[],null,["# Migration preferences for PostgreSQL\n\nThis page describes the available migration preferences for PostgreSQL database\ndeployments.\nAs your target product, you can select AlloyDB for PostgreSQL\nor Cloud SQL for PostgreSQL.\n\nCloud SQL for PostgreSQL settings\n---------------------------------\n\nMigration Center lets you choose Cloud SQL as the target database\ndeployment for your database.\n\n- From the **Cloud SQL edition** list, select the edition to which you want to migrate. For more information, see [Cloud SQL editions features](/sql/docs/editions-intro#edition-features).\n\n\u003c!-- --\u003e\n\n- From the **Sizing method** list, select the sizing strategy that you want to apply during the migration. If you select **Utilization\n based**, Migration Center uses performance metrics from your database, if available, to provide sizing recommendations.\n\n\u003c!-- --\u003e\n\n- From the **Storage type** list, select the type of storage that you want to use for your database.\n\n### Availability\n\nSpecify how to distribute your database across Google Cloud zones.\n\n- From the **Zones** list, select either **Single zone** or **Multiple zones**. Choosing multiple zones for your database provides a backup zone in case the primary zone becomes unavailable.\n\n\nFor more information about region-specific considerations, see\n[Geography and regions](/docs/geography-and-regions#regions_and_zones).\n\n### Automatic backup\n\nSpecify if you want to enable automatic backups.\n\nFor more information, see\n[About Cloud SQL backup](/sql/docs/postgres/backup-recovery/backups).\n\n### Pricing track\n\nSpecify your preferred pricing track for the database that you migrate to\nGoogle Cloud.\n\nChoose between on demand pricing, or a committed use of\none or three years.\nCommitted use discounts (CUDs) apply when you choose a committed use,\nand appear in your total cost of ownership (TCO) report.\n\nFor more information, see\n[Cloud SQL pricing](/sql/docs/postgres/pricing).\n\nAlloyDB for PostgreSQL settings\n-------------------------------\n\nMigration Center lets you choose AlloyDB for PostgreSQL as the\ntarget database deployment for your database.\nChoose the settings for your database as described in the following sections.\n\n### Sizing\n\nSpecify your preferred sizing strategy for the database that you migrate to\nGoogle Cloud.\n\nFrom the **Sizing method** list, select one of the following sizing strategies\nto apply in your assessment:\n\n- **No rightsizing:** choose a shape that closely matches the shape of your source machine. Sizing doesn't take performance data into account.\n- **Shape based:** choose a shape that is rightsized based on AlloyDB's efficient use of resources.\n- **Utilization based:** choose a shape that is rightsized based on AlloyDB's efficient use of resources, and on the source performance data, when available.\n\n### Primary instance availability\n\nSpecify how to distribute your database across Google Cloud zones.\n\nFrom the **Zones** list, select either **Single zone** or **Multiple zones**.\nChoosing multiple zones for your database provides a backup zone\nin case the primary zone becomes unavailable.\n\n### Data protection\n\nFrom the **Continuous data protection** field, specify if you plan to use\nautomatic backups in your database, and to include them in your cost estimation.\n\n### Pricing track\n\nSpecify your preferred pricing track for the database that you migrate to\nGoogle Cloud.\n\nChoose between on demand pricing, or a committed use of\none or three years.\nCommitted use discounts (CUDs) apply when you choose a committed use,\nand appear in your TCO report.\n\nFor more information, see\n[AlloyDB for PostgreSQL pricing](/alloydb/pricing).\n\nWhat's next\n-----------\n\n- Learn about the [available preferences for MySQL databases](/migration-center/docs/mysql-preferences)."]]
