Practical Migration: Steps For Data Transfer And DNS Switching When Renting Cloud Storage On Taiwanese VPS

Getting ready to proceed Taiwan VPS cloud hosting When migrating, the primary considerations are the balance among stability, bandwidth, and price. For users seeking the best (performance and support), it’s safest to choose a provider with guaranteed local bandwidth and DDoS protection ； For projects seeking cost-effectiveness, platforms that offer pay-as-you-go pricing along with snapshot/backup features can be given priority ； If the goal is to keep costs as low as possible, a basic VPS can be chosen, but more time must be allocated for maintenance to handle network and backup issues. This article focuses on Data migration and DNS Switching Provides detailed practical guidance, suitable for server operations and site migration scenarios.

Before starting the migration, conduct a thorough assessment first: List the files, databases, SSL certificates, Cron tasks, and environment dependencies to be migrated ； Check the target VPS’s operating system, disk partitions, available bandwidth, and firewall settings ； Confirm the peak traffic times on the current network to schedule the switch window. Write the key items as a migration checklist, and enable backup snapshots before migrating.

Always make recoverable backups first: Compress the file system using tar or zip and save local and remote copies ； Use mysqldump or xtrabackup to export for MySQL/MariaDB ； Use pg for Postgres_dump. If the platform supports snapshots, create one immediately before migration for rollback purposes. Backup files are labeled with time and version.

Common relocation methods include: 1) rsync over SSH (recommended for incremental synchronization, preserving permissions, differential updates) ； 2) scp/ftp (simple but not suitable for many small files) ； 3) Transmit after compression and packaging (suitable for one-time large migrations) ； 4) Database backup import (mysqldump → Import). For real-time websites, it is recommended to first perform a full synchronization, followed by incremental rsync to reduce switching time.

Example Process: Create the same directory structure on the target machine and set permissions ； Run rsync -avz --delete --progress user@source:/path/ /path/ on the source machine. The first synchronization can be done during off-peak hours, and after that, rsync can be run again to perform incremental updates. Be sure to retain soft links, permissions, and timestamps (-a parameter).

For MySQL-like databases, first export from the source database: mysqldump -u root -p --single-transaction --routines --triggers --events --databases dbname > db.sql . to db.sql Transfer to the target machine. Before importing, ensure that the encoding of the target database matches the user permissions: mysql -u root -p < db.sql。若数据库较大，可使用压缩传输（mysqldump | gzip）并在目标机解压导入。

When migrating SSL, export the certificate and private key, and configure them correctly on the target machine ； If using Let’s Encrypt, you can reapply for a certificate on the target machine, apply for one after switching, and then delete the old certificate. For mail server services (SMTP/IMAP), special attention should be paid to MX records and port policies. If emails are hosted on the current VPS, migration must be handled carefully, taking potential delays into account.

Before the official DNS switch, use the local hosts file to point to the target VPS for functional testing: Check website loading, database connections, third-party callbacks, uploading and downloading, etc. Only after all issues are resolved can you proceed to the switching phase. Grayscale switching can first direct a small amount of traffic to the new machine for testing.

Reduce TTL in advance: Set the TTL of the relevant A/AAAA records to a lower value (such as 300 seconds) 24–48 hours before the switch, so it takes effect quickly afterward. When switching, update the A record to the new IP, and also confirm whether it is necessary to update the CNAME, MX, SPF, and DKIM records. After switching, monitor the effectiveness of DNS resolution in various locations.

Suggested steps: 1) Run incremental rsync again before switching windows to sync the latest files ； 2) Enable maintenance mode (lock write operations at the application layer or pause the queue) ； 3) Disable application writing — Perform the final rsync and incremental database import ； 4) Switch DNS records ； 5) Exit maintenance mode and monitor logs. For zero downtime, load balancing or a reverse proxy can be used for session routing.

After switching, verification is conducted through access logs, error rates, page response times, slow database queries, and user feedback. If a problem is found and a rollback is needed, use previous snapshots or the saved source IP and old records to restore quickly. When rolling back, DNS cache latency and TTL also need to be considered.

Be aware of bandwidth bottlenecks, lost file permissions, broken symlinks, un migrated scheduled tasks, risks of SSL private key leakage, and lost emails. During the migration process, it is essential to maintain communication records, documenting each command executed and the corresponding time points, to facilitate auditing and review.

Migrate to Taiwan VPS cloud hosting It is recommended to enable automatic snapshots, set up monitoring alerts, optimize database indexes and caching (such as Redis/OPcache), and after stable operation, adjust the DNS TTL back to a reasonable value to reduce parsing query load. Reasonable migration planning and gradual verification are key to achieving a smooth transition.