Brand: Western Digital | Category: Enterprise SSDs
SKU: WUSTR6438ASS204 | Part #: WUSTR6438ASS204 | MPN: WUSTR6438ASS204
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The Western Digital Ultrastar DC SS540 is an enterprise-class SAS SSD delivering 3.84TB of capacity for high-performance storage environments. Built on 3D NAND flash technology, the DC SS540 combines sequential throughput and random I/O performance suitable for mixed-use workloads in data center and SAN infrastructure. This drive targets legacy SAS storage array refresh cycles, providing modern flash performance within existing SAS-based storage ecosystems.
Designed for 24/7 operation in demanding enterprise environments, the DC SS540 offers consistent performance metrics across sustained workloads typical of OLTP, virtualization, and database applications. The drive integrates advanced data protection and reliability features to support continuous availability requirements in mission-critical deployments.
The DC SS540 remains a standard refresh component for organizations modernizing SAS-based storage arrays without full platform migration, particularly in regulated industries requiring compatibility with existing infrastructure investments.
| Manufacturer | Western Digital |
| Brand | Western Digital Ultrastar |
| Model | DC SS540 |
| Manufacturer Part Number | WUSTR6438ASS204 |
| Capacity | 3.84TB |
| Form Factor | 2.5 inch |
| Interface | SAS 12Gb/s |
| NAND Type | 3D TLC Flash |
| Sequential Read Performance | 550 MB/s |
| Sequential Write Performance | 500 MB/s |
| Random Read (4K) | 95,000 IOPS |
| Random Write (4K) | 25,000 IOPS |
| Average Latency | 0.1 ms |
| Power Consumption (Operating) | 5.5W |
| Power Consumption (Idle) | 0.075W |
| Operating Temperature Range | 0°C to 70°C |
| Reliability (MTBF) | 2.5M hours |
| Workload Rating | 550 TB/year |
| Launch Date | Q4 2020 |
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| Brand | Western Digital |
| Category | Enterprise SSDs |
| SKU | WUSTR6438ASS204 |
| Part Number | WUSTR6438ASS204 |
| Condition | New |
| Model | DC SS540 |
| Manufacturer Part Number | WUSTR6438ASS204 |
| Capacity | 3.84TB |
| Form Factor | 2.5 inch |
| Interface | SAS 12Gb/s |
| NAND Type | 3D TLC Flash |
| Sequential Read Performance | 550 MB/s |
| Sequential Write Performance | 500 MB/s |
| Random Read (4K) | 95,000 IOPS |
| Random Write (4K) | 25,000 IOPS |
| Average Latency | 0.1 ms |
| Power Consumption (Operating) | 5.5W |
| Power Consumption (Idle) | 0.075W |
| Operating Temperature Range | 0°C to 70°C |
| Reliability (MTBF) | 2.5M hours |
| Workload Rating | 550 TB/year |
| Launch Date | Q4 2020 |