Backup Storage & Infrastructure on Catalogic Software

Immutable Storage for Backups Without Appliance Lock-In

Mon, 17 Aug 2026 00:00:00 +0000

Most organisations do not choose appliance lock-in. They arrive at it one purchase at a time, and notice when the third expansion quote lands. If you are holding a refresh quote and wondering whether that capacity increment is really the only option, this is the arithmetic underneath the feeling, and what changes when the storage layer stops being the hardware.

Worth separating two things that get bundled together. An appliance as a form factor is a good idea: pre-sized, software matched to the platform, quick to stand up. vStor ships as a virtual appliance for exactly that reason, and DPX is deliberately multi-function in the purpose-built backup appliance sense.

What Is Immutable Storage? WORM, Deletion Locks, and What They Actually Protect

Tue, 05 May 2026 00:00:00 +0000

If you are specifying backup storage and the requirement says “immutable”, 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.

Immutability and WORM are not the same thing

The two terms get used interchangeably and they are related, but they come from different places.

Purpose-Built Backup Appliance: What a PBBA Is and When One Makes Sense

Wed, 04 Sep 2024 00:00:00 +0000

A purpose-built backup appliance (PBBA) is backup software and storage hardware sold as one pre-configured box. You rack it, point workloads at it, and skip the integration work. If you are weighing one against assembling the same capability yourself, the trade is straightforward: you buy speed of deployment and pay for it in flexibility later.

This is mostly a question for teams without spare engineering time, which is why PBBAs sell well into small and mid-sized IT departments.