https://www.catalogicsoftware.com/blog/tags/worm/Recent content in WORM on Catalogic SoftwareHugoen-usTue, 05 May 2026 00:00:00 +0000https://www.catalogicsoftware.com/blog/what-is-immutable-storage/Tue, 05 May 2026 00:00:00 +0000https://www.catalogicsoftware.com/blog/what-is-immutable-storage/<p>If you are specifying backup storage and the requirement says &ldquo;immutable&rdquo;, this is what that word actually buys and where it stops. Immutable storage will not let data be changed or deleted for a defined period, no matter who asks. Its value for backup is narrow and specific: it takes the administrator, and anyone holding stolen administrator credentials, off the list of people who can destroy a recovery point.</p> <h2 id="immutability-and-worm-are-not-the-same-thing">Immutability and WORM are not the same thing</h2> <p>The two terms get used interchangeably and they are related, but they come from different places.</p>https://www.catalogicsoftware.com/blog/worm-vs-immutability-essential-insights-into-data-protection-differences/Sat, 07 Sep 2024 00:00:00 +0000https://www.catalogicsoftware.com/blog/worm-vs-immutability-essential-insights-into-data-protection-differences/<p>WORM (Write Once, Read Many) and immutability get used as synonyms, and they are not. Both stop data being changed after it is written, but one is a property of storage and the other is an outcome you design for, and the difference decides what you can actually buy. Here is what separates them, and how Catalogic vStor uses both.</p> <h2 id="what-is-worm">What Is WORM?</h2> <p>WORM is storage that accepts a write once and refuses every later attempt to change or remove it, for as long as its retention term runs. Finance, healthcare and legal all have rules requiring records to survive unedited for a defined period, which is where it earns its keep.</p>