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How to Migrate Data Warehouse to Snowflake in 7 Steps

As data-driven insights become pivotal for over 60% of organizations, the push to modernize data infrastructures is more pronounced than ever. The goal? To leverage data with greater efficiency, adaptability, and breadth.

Snowflake emerges as your best bet — a cloud-based data warehouse that runs on Amazon Web Services or Microsoft Azure. With its promise of agility, scalability, and an intuitive user experience, Snowflake is redefining the data warehousing landscape. 

But how do you make the leap from your traditional infrastructure to the modern cloud-based data warehouse? In this guide, we’ll demystify the process, and reveal how to migrate to Snowflake in 7 simple steps. Read on to learn more.

Why Migrate to Snowflake?

Before diving into the migration process, let’s explore the key reasons to choose Snowflake:

Built for the cloud

Snowflake is a cloud-native data platform purpose-built to harness the full potential of the cloud. It eliminates the need for on-premises infrastructure and offers limitless scalability, freeing you from capacity concerns regardless of your data volume.

Eliminating data silos

Snowflake eradicates data silos by offering a single source of truth for all data. Its unified data architecture allows the consolidation of data from various sources into a centralized platform which considered as core benefits of Snowflake. This fosters seamless data integration, collaboration, and data-driven decisions across the organization.


Snowflake’s distinctive architecture enables effortless scalability, allowing you to adjust resources according to your organization’s requirements easily. Dynamic resource allocation accommodates changing workloads, ensuring consistent peak performance.

Enhanced performance

Snowflake’s innovative architecture guarantees exceptional performance, enabling swift query execution and real-time analytics. The division of storage and computation enables parallel processing and automatic optimization, yielding rapid query responses.

Actionable insights

Snowflake’s real-time data processing empowers organizations with immediate, actionable insights from their data. With its potent query engine and optimized performance, Snowflake facilitates rapid data analysis and visualization, expediting decision-making.

Robust security

Data security is paramount for Snowflake. It employs industry-leading security practices, including end-to-end encryption, data masking, and multi-factor authentication. Snowflake is also compliant with various data security regulations, ensuring stringent data protection.


Snowflake’s pricing aligns with usage, offering budget-friendly options. You only pay for the resources you utilize, eliminating the need for upfront capital investments. This adaptable pricing structure optimizes expenses while granting access to potent data analytics capabilities.

Support for multiple data structures

Snowflake accommodates an array of data structures – structured, semi-structured, and unstructured. This versatility empowers organizations to engage with diverse data types such as JSON, Avro, Parquet, and more, enabling comprehensive data analysis and insights.

Regulatory compliance

Compliance with industry regulations and data governance is paramount. Snowflake provides robust compliance features, including built-in data protection, encryption, and granular access controls. It ensures adherence to regulatory mandates such as GDPR, HIPAA, and PCI-DSS, guaranteeing data privacy and compliance.

7 Steps of Data Warehouse Migration to Snowflake

Now that we know why moving to Snowflake is a great idea let’s explore how to do the actual migration.

1. Analyze The Data

The first step in Snowflake data migration warehouse migration is analyzing the data. This involves checking your data patterns to spot inconsistencies, categorizing data based on its significance, evaluating its quality, and understanding intricate data relationships. This is vital to ensure that your data migration goes smoothly and your data stays accurate and useful.

2. Choose a Migration Method

After analyzing your data, the next step is to choose a migration method. Here are a few approaches you may consider:

  • Manual migration: Manually exporting data from your old system and importing it into Snowflake. This is good for smaller amounts of data, but can be time-consuming.
  • ETL migration: Using ETL tools to extract, transform, and load data into Snowflake. Automated and better for larger data sets.
  • Replication migration: Copying data from your old system to Snowflake using a replication tool. Useful for real-time replication.

Your choice will depend on factors like how much data you have and how quickly you want to migrate.

3. Select & Split Data

After selecting your migration to Snowflake method, the next step is to select and split the data using a file splitter such as ETL tools or GSplit. This makes the migration process smoother and reduces the risk of errors.

4. Stage The Data

Next, migrate data to the Snowflake staging

area. You’ll need the SnowSQL command line client or SnowSQL (CLI Client), downloadable from the Snowflake platform, to do this. Experts can employ the PUT command with Snowflake syntax to stage local files. Parallelization, adjustable between 1 and 100, can be set for efficiency, with lower numbers demanding less power for execution.

5. Auto-Compress Files

While staging local files in Snowflake, remember to boost speed by auto-compressing them. Check if files are manually zipped; if so, set auto-compress to “Boolean value of false” for optimal results.

6. Implementation

In this phase, cloud migration experts set up the Snowflake environment and start the migration process. They set up accounts, warehouses, and databases according to your needs and then move the data from your old system to Snowflake. This must be done carefully, ensuring data safety and minimum downtime.

7. Verify Cloud Migration

The last step is to make sure everything goes well. Test and verify the migrated data in Snowflake to ensure it’s accurate and accessible. Data migration testing is important to guarantee your data is in good shape and ready for action in Snowflake. 

While these steps may seem straightforward enough, it is important to point out that 83% of data migration fail for one reason or another. The key to a successful and seamless data warehouse migration to Snowflake is working with experts. Not only do these people know what they are doing, it will also free up your time so that you can focus on other equally important aspects of your business.

If you’re in the market for cloud migration experts, then you’re on the right page. Get in touch with our ModLogix experts to discuss your plans regarding cloud migration services.

Choose ModLogix for Migrating Your Data Warehouse to Snowflake

ModLogix, a leading legacy software modernization company, is the perfect partner for your data migration to Snowflake. With years of experience and expertise in legacy software modernization, ModLogix understands the unique challenges and complexities involved and how to surmount them. 

We have a proven track record of successful migration projects, including the seamless migration of a Webforms Platform to Microsoft Azure. In this project, we encountered three challenges related to outdated technology:

  1. Hardware dependency
  2. Database compatibility
  3. Unsupported elements

We fixed all of these and moved the platform to the cloud. The result was a cutting-edge solution that boosted report generation by a staggering 200 times and delivered an exceptional 99.99% business continuity. 

By partnering with ModLogix on your data warehouse migration to Snowflake project, you too can leverage our expertise to ensure a secure and seamless migration with minimal disruption to your business operations. 

Get in touch with us for a smooth transition to Snowflake, a modern, cloud-based data platform.


Moving your data warehouse to Snowflake can significantly boost your data analytics efficiency and scalability. By following the processes outlined in our Snowflake migration guides, you can ensure a pain-free migration. However, data migration is a complex task. It requires expertise and careful planning. 

For a tailored migration plan, reach out to ModLogix. Our experts will collaborate with you for a seamless transition to Snowflake.

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