Omnixon Global
Western Digital Ultrastar DC SS540 3.84TB Enterprise SAS SSD

Western Digital Ultrastar DC SS540 3.84TB Enterprise SAS SSD

Brand: Western Digital | Category: Enterprise SSDs

SKU: WUSTR6438ASS204 | Part #: WUSTR6438ASS204 | MPN: WUSTR6438ASS204

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About the Western Digital Ultrastar DC SS540 3.84TB Enterprise SAS SSD

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.

Ideal for

  • SAS storage array capacity and performance upgrades in existing bank and hospital data centers
  • OLTP database acceleration in virtualized enterprise environments
  • Hybrid SAN refresh maintaining backward compatibility with legacy SAS controllers
  • Mixed read/write workload consolidation in multi-tenant data center environments
  • Healthcare imaging and electronic health record system storage tiers
  • Financial transaction processing systems requiring sustained I/O performance

Technical specifications

ManufacturerWestern Digital
BrandWestern Digital Ultrastar
ModelDC SS540
Manufacturer Part NumberWUSTR6438ASS204
Capacity3.84TB
Form Factor2.5 inch
InterfaceSAS 12Gb/s
NAND Type3D TLC Flash
Sequential Read Performance550 MB/s
Sequential Write Performance500 MB/s
Random Read (4K)95,000 IOPS
Random Write (4K)25,000 IOPS
Average Latency0.1 ms
Power Consumption (Operating)5.5W
Power Consumption (Idle)0.075W
Operating Temperature Range0°C to 70°C
Reliability (MTBF)2.5M hours
Workload Rating550 TB/year
Launch DateQ4 2020

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Technical Specifications

BrandWestern Digital
CategoryEnterprise SSDs
SKUWUSTR6438ASS204
Part NumberWUSTR6438ASS204
ConditionNew
ModelDC SS540
Manufacturer Part NumberWUSTR6438ASS204
Capacity3.84TB
Form Factor2.5 inch
InterfaceSAS 12Gb/s
NAND Type3D TLC Flash
Sequential Read Performance550 MB/s
Sequential Write Performance500 MB/s
Random Read (4K)95,000 IOPS
Random Write (4K)25,000 IOPS
Average Latency0.1 ms
Power Consumption (Operating)5.5W
Power Consumption (Idle)0.075W
Operating Temperature Range0°C to 70°C
Reliability (MTBF)2.5M hours
Workload Rating550 TB/year
Launch DateQ4 2020