Dell 503M7 960GB SAS 12G MU 2.5" Solid State Drive The Dell 503M7 is a 960GB SAS 12G MU (Mixed-Use) 2.5" Solid State Drive (SSD). Here's a breakdown of its key features and specifications: Capacity: 960GB Interface: SAS (Serial Attached SCSI) Speed/Data Transfer Rate: 12Gb/s (12 Gigabits per second) Form Factor: 2.5-inch Small Form Factor (SFF) Workload: Mixed-Use (MU) - This indicates it's designed for a balance of read and write operations, suitable for applications like web servers, SQL servers, and data warehousing. NAND Flash Type: MLC (Multi-Level Cell) Hot-Swappable: Yes, allowing for installation or removal without system downtime. Dell Part Numbers: 503M7 or 0503M7 Equivalent Toshiba Model: PX05SVB096Y (many listings indicate this is the underlying Toshiba drive for this Dell part). Endurance: Typically rated for 3 DWPD (Drive Writes Per Day) with a 100% random write workload for mixed-use enterprise SSDs like this. Performance (typical for this model): Sequential Read: Up to 1900 MB/s Sequential Write: Up to 850 MB/s Random Read (4K): Up to 270,000 IOPS Random Write (4K): Up to 60,000 IOPS Reliability: Enterprise-class, with features like power-loss protection and end-to-end data protection. MTBF (Mean Time Between Failure) is often around 1.6 million hours or 2 million hours. Compatibility: Designed for Dell PowerEdge servers and storage arrays. Warranty: 60day