Your database holds the data attackers actually want: customers, invoices, salaries. With India’s DPDP obligations applying from 13 May 2027, the database is a good place to start tightening security. This guide covers SQL Server security basics, and when running SQL Server on Linux makes sense.
Five SQL Server security basics
- Least privilege: applications connect with their own login and only the rights they need, never as sysadmin.
- Disable or rename “sa”: and never share one admin login between people.
- Encryption: Transparent Data Encryption for data files, and encrypted backups, so a stolen copy is unreadable. Availability depends on your SQL Server edition.
- Updates: apply SQL Server cumulative updates, not just Windows updates.
- Network: SQL Server should never be reachable from the internet. Allow only the application servers that need it.
Backups and restores
Know your recovery model, take full, differential and log backups to match how much data you can afford to lose, and test restores regularly. A backup you’ve never restored is a hope, not a plan. Backups can be configured for you, but restores are best run and practised by your own team.
Does SQL Server run on Linux?
Yes. It has done for years, and it’s supported on Red Hat Enterprise Linux, Ubuntu and SUSE. The SQL Server engine is the same on both, and so is the licensing. The choice comes down to your applications and your team’s skills.
Linux makes sense when:
- Your team already runs Linux servers and knows them well.
- You’d rather not license a Windows Server just to host one database.
- You want to run SQL Server in containers.
Windows is still the better fit when:
- Your application vendor only supports SQL Server on Windows.
- You rely on Windows-only features or tools around the database.
How Pentacle IT Solutions can help
Pentacle IT Solutions, a Microsoft Solutions Partner for Data & AI, installs, secures, upgrades and supports SQL Server on Windows or Linux for businesses in Lucknow and across Uttar Pradesh.
