Promise Technology Pegasus M4 RAID System Case F29PGM400000000 — Expansion RAID storage enclosure

The Promise Technology Pegasus M4 RAID System Case is an expansion enclosure designed to add drive capacity and chassis support to compatible Pegasus RAID arrays. As a dedicated system case, it provides multiple internal drive bays and the physical infrastructure needed to house and cool hard drives or SSDs intended for RAID configurations. The unit is intended for use where additional chassis space is required to scale storage capacity while preserving the RAID architecture of an existing Pegasus system.

Advantages

The enclosure offers a purpose-built form factor for expanding Pegasus RAID systems, providing a straightforward way to increase storage density without altering the primary RAID controller. Its internal drive bays and airflow design allow installation of multiple drives with centralized power and cooling. The system case simplifies integration with existing Pegasus arrays, reducing the complexity of adding capacity and enabling continued use of RAID redundancy and performance characteristics.

Suitable for

• Professional media production environments needing additional disk capacity
• Backup and archive systems that require expanded chassis for more drives
• IT setups where maintaining RAID configurations and redundancy is necessary
• Data workflows that separate compute/controller units from drive enclosures

When it may not be suitable

This system case is intended as an expansion chassis and does not include a RAID controller or host interface; it is not a standalone storage appliance. It may not be suitable for users who require an all-in-one NAS or a ready-to-use RAID solution with built-in management, networking, or controllers. Additionally, compatibility depends on using it with supported Pegasus RAID systems and matching drive types and firmware.

Key specifications

• Form factor: expansion RAID system chassis designed for multiple internal drive bays
• Drive support: accepts standard 3.5" and/or 2.5" SATA/SAS drives depending on carrier and system compatibility
• Cooling: integrated chassis cooling and airflow design for multi-drive configurations
• Power: centralized internal power supply to feed multiple installed drives
• Chassis interfaces: internal connectors and backplane designed to mate with compatible Pegasus RAID controllers or host modules
• Use case: intended for adding storage capacity and chassis space to existing RAID arrays

How to use

Install compatible drives into the provided drive bays or carriers following the manufacturer's mounting procedure. Mount the expansion case in the same rack or location as the host Pegasus array if required, and connect internal cables or backplane links to the RAID controller or host module according to system integration guidelines. Ensure proper power connections and confirm cooling fans operate before placing the unit into production. After physical installation, verify drive recognition and RAID status through the host RAID management software.

What to consider before purchase

• Confirm compatibility with your specific Pegasus RAID model and host controller
• Verify supported drive types, sizes, and carrier requirements for this chassis
• Ensure sufficient rack space, power capacity, and cooling in your deployment environment
• Check whether additional cables or adapter modules are required for integration

Usage recommendations

For reliable operation, use drives that are on the vendor's recommended compatibility list, install drives and firmware updates when the host RAID system is offline or in maintenance mode, and monitor drive health and enclosure cooling via the RAID management tools. Plan capacity expansion and redundancy strategies in advance to maintain consistent performance and data protection across the Pegasus system and this expansion chassis.