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IBM L3-25121-56A 46M0851 Lsi / L3-25121-56A Megaraid Sas/SATA Controller (3A07)
- LSI Megaraid SAS/SATA Controller.
- Part Number: 46M0851.
- Supports SAS and SATA drives.
- Provides RAID functionality (RAID 0, 1, 5, 6, 10, 50, 60).
- High-performance data transfer.
- Enhances storage reliability and performance.
- Modular design for server integration.
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Product Overview
The IBM L3-25121-56A, also identified by part number 46M0851, is a Megaraid SAS/SATA Controller developed by LSI. This controller provides robust storage connectivity and RAID capabilities for servers and workstations.
Technical Information
| Controller Type | SAS/SATA RAID Controller |
| Chipset | LSI Megaraid |
| Interface | SAS/SATA |
Additional Specifications
| Part Number | 46M0851 |
| Model | L3-25121-56A |
| RAID Levels Supported | 0, 1, 5, 6, 10, 50, 60 |
Product Description
The IBM L3-25121-56A, bearing the LSI Megaraid designation and IBM part number 46M0851, is a high-performance storage controller designed to manage both Serial Attached SCSI (SAS) and Serial ATA (SATA) drives. It offers advanced RAID (Redundant Array of Independent Disks) capabilities, allowing for the creation of fault-tolerant storage configurations to protect data against drive failures and improve read/write performance. This controller is typically integrated into server backplanes or expansion slots to provide a robust storage backbone. This controller supports a comprehensive range of RAID levels, including RAID 0 for striping (performance), RAID 1 for mirroring (redundancy), RAID 5 and 6 for parity-based redundancy with performance, and RAID 10/50/60 for combinations of striping and mirroring/parity. Such flexibility allows system administrators to tailor storage solutions to specific application requirements, balancing performance, capacity, and data protection needs. The controller's architecture is optimized for high throughput and low latency, making it suitable for demanding enterprise workloads. As a modular component, the L3-25121-56A is designed for seamless integration into IBM server platforms and other compatible systems. It often features onboard cache memory and battery backup units (BBUs) or flash-based write cache (FBWC) to protect data in the event of a power loss during write operations. The controller's firmware provides management utilities for configuration, monitoring, and maintenance of the attached storage arrays.
